Is WESTBY TOWN OF required to publish a Consumer Confidence Report?

Yes. WESTBY TOWN OF is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is WESTBY TOWN OF’s next Consumer Confidence Report due?

WESTBY TOWN OF’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

WESTBY, MT · Sheridan County

WESTBY TOWN OF Water System

Consumer Confidence Report status

WESTBY TOWN OF must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for WESTBY TOWN OF.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Montana’s official records. Always confirm current status with Montana before making decisions based on this information.

System facts

System ID (PWSID): MT0000355
System type: Community Water System
Population served: 172
Service connections: 106
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

WESTBY TOWN OF is one of 1,084 community water systems in Montana in the 500 or fewer people size category, serving 172 people from surface water.

As of August 1, 2026, its federal record holds 162 entries between 1993 and 2022, all of which EPA lists as closed. Nothing has been added since 2022.

Of the 162, 151 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals, volatile organic chemicals, and inorganic chemicals.

Violation history

Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2022 – March 31, 2022
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2022 – March 31, 2022
Resolved
Monitoring, Regular
—
Arsenic
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
Arsenic
October 1, 2018 – December 31, 2018
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2015 – February 1, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2015 – March 31, 2015
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2014 – October 23, 2014
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2014 – December 31, 2014
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2014 – September 30, 2014
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2014 – June 30, 2014
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
November 1, 2013 – December 18, 2013
Resolved
Monitoring, Regular
—
Arsenic
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Arsenic
October 1, 2012 – December 31, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2012 – September 30, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2012 – June 30, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2012 – March 31, 2012
Resolved
Monitoring, Regular
—
Arsenic
October 1, 2011 – December 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2011 – September 30, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
LASSO
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Aldicarb
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Aldicarb sulfone
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Picloram
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Simazine
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Endrin
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Selenium
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Mercury
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2011 – December 31, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2011 – March 31, 2011
Resolved
Monitoring, Regular
—
Barium
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Chromium
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Mercury
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Selenium
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Barium
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Chromium
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Styrene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Toluene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Benzene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2011 – September 23, 2013
Resolved
Monitoring, Regular
—
Arsenic
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Styrene
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
Benzene
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
Toluene
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2008 – October 11, 2000
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
LASSO
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Atrazine
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Aldicarb sulfone
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Picloram
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Simazine
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Diquat
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Dalapon
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Endrin
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Chlordane
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
2,4-D
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
LASSO
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Atrazine
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Aldicarb
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Aldicarb sulfone
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Picloram
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Chlordane
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Endrin
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Simazine
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Endothall
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Diquat
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Dalapon
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 1997 – May 31, 1997
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1996 – July 31, 1996
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1993 – December 31, 1993
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2022 – March 31, 2022	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2022 – March 31, 2022	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring, Regular	Arsenic	—	Resolved
October 1, 2018 – December 31, 2018	Monitoring, Regular	Arsenic	—	Resolved
December 30, 2015 – February 1, 2016	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2015 – March 31, 2015	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2014 – October 23, 2014	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
October 1, 2014 – December 31, 2014	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2014 – September 30, 2014	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2014 – June 30, 2014	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
November 1, 2013 – December 18, 2013	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Arsenic	—	Resolved
October 1, 2012 – December 31, 2012	Monitoring, Regular	Arsenic	—	Resolved
July 1, 2012 – September 30, 2012	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2012 – June 30, 2012	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2012 – March 31, 2012	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2011 – December 31, 2011	Monitoring, Regular	Arsenic	—	Resolved
July 1, 2011 – September 30, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2011 – June 30, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	LASSO	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Aldicarb	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Aldicarb sulfone	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Picloram	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Simazine	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Endrin	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Selenium	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Mercury	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2011 – March 31, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Barium	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Chromium	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Mercury	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Selenium	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Barium	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Chromium	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Styrene	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Toluene	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Benzene	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2011 – September 23, 2013	Monitoring, Regular	Trichloroethylene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	Styrene	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	Benzene	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	Toluene	—	Resolved
January 1, 2008 – October 11, 2000	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	LASSO	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Atrazine	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Aldicarb sulfone	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Picloram	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Simazine	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Diquat	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Dalapon	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Endrin	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Chlordane	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	2,4-D	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	LASSO	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Atrazine	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Aldicarb	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Aldicarb sulfone	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Picloram	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Chlordane	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Endrin	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Simazine	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Endothall	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Diquat	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Dalapon	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Toxaphene	—	Resolved
May 1, 1997 – May 31, 1997	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 1996 – July 31, 1996	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Nitrate	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

April 18, 2022State Compliance achieved2 linked violations
April 14, 2022State Public Notification requested2 linked violations
April 14, 2022State Violation/Reminder Notice2 linked violations
March 24, 2020State no additional Formal Action needed10 linked violations
November 18, 2019State Compliance achieved1 linked violation
October 17, 2019State Violation/Reminder Notice1 linked violation
October 17, 2019State Public Notification requested1 linked violation
February 20, 2019State Compliance achieved1 linked violation
January 22, 2019State Public Notification requested1 linked violation
January 22, 2019State Violation/Reminder Notice1 linked violation
February 1, 2016State Compliance achieved1 linked violation
February 1, 2016State Violation/Reminder Notice1 linked violation
July 6, 2015State Public Notification received1 linked violation
June 23, 2015State Compliance achieved2 linked violations
June 23, 2015State Compliance achieved2 linked violations
June 23, 2015State Violation/Reminder Notice21 linked violations
June 23, 2015State Compliance achieved2 linked violations
May 20, 2015State Compliance achieved1 linked violation
May 20, 2015State Compliance achieved8 linked violations
March 31, 2015State Public Notification requested2 linked violations
March 31, 2015State Violation/Reminder Notice1 linked violation
January 12, 2015State Public Notification received1 linked violation
December 23, 2014State Public Notification requested1 linked violation
December 23, 2014State Violation/Reminder Notice1 linked violation
October 28, 2014State Public Notification received1 linked violation
October 23, 2014State Compliance achieved1 linked violation
October 23, 2014State Public Notification requested1 linked violation
October 23, 2014State Violation/Reminder Notice1 linked violation
September 30, 2014State Public Notification requested1 linked violation
September 30, 2014State Violation/Reminder Notice1 linked violation
September 23, 2014State Compliance achieved1 linked violation
August 4, 2014State Public Notification received1 linked violation
July 9, 2014State Public Notification requested1 linked violation
July 9, 2014State Violation/Reminder Notice1 linked violation
February 6, 2014State Compliance achieved6 linked violations
February 6, 2014State Compliance achieved6 linked violations
January 24, 2014State Violation/Reminder Notice21 linked violations
January 24, 2014State Violation/Reminder Notice26 linked violations
January 24, 2014State Public Notification requested21 linked violations
January 24, 2014State Public Notification requested6 linked violations
January 24, 2014State Violation/Reminder Notice6 linked violations
January 24, 2014State Public Notification requested6 linked violations
January 24, 2014State Violation/Reminder Notice6 linked violations
January 24, 2014State Public Notification requested26 linked violations
January 24, 2014State Public Notification requested1 linked violation
January 24, 2014State Violation/Reminder Notice1 linked violation
January 15, 2014State Public Notification requested1 linked violation
January 15, 2014State Violation/Reminder Notice1 linked violation
January 15, 2014State Compliance achieved1 linked violation
December 18, 2013State Compliance achieved1 linked violation
December 18, 2013State Violation/Reminder Notice1 linked violation
November 13, 2013State Compliance achieved1 linked violation
November 13, 2013State Compliance achieved1 linked violation
September 23, 2013State Compliance achieved47 linked violations
August 12, 2013State Public Notification received1 linked violation
July 18, 2013State Compliance achieved1 linked violation
July 17, 2013State Public Notification requested1 linked violation
July 17, 2013State Violation/Reminder Notice1 linked violation
January 30, 2013State Compliance achieved1 linked violation
January 30, 2013State Compliance achieved22 linked violations
January 30, 2013State Compliance achieved1 linked violation
January 11, 2013State Public Notification requested1 linked violation
January 11, 2013State Violation/Reminder Notice1 linked violation
September 4, 2012State Public Notification received1 linked violation
August 20, 2012State Public Notification requested1 linked violation
August 20, 2012State Violation/Reminder Notice1 linked violation
May 25, 2012State Violation/Reminder Notice1 linked violation
May 25, 2012State Public Notification requested1 linked violation
March 1, 2012State Public Notification received1 linked violation
February 22, 2012State Administrative Penalty assessed1 linked violation
February 22, 2012State Formal Notice of Violation issued2 linked violations
February 22, 2012State Administrative Penalty assessed8 linked violations
February 14, 2012State Violation/Reminder Notice1 linked violation
February 14, 2012State Public Notification requested1 linked violation
January 31, 2012State Public Notification requested1 linked violation
January 31, 2012State Violation/Reminder Notice1 linked violation
January 31, 2012State Compliance achieved1 linked violation
December 12, 2011State Administrative/Compliance Order without penalty issued8 linked violations
December 12, 2011State Administrative/Compliance Order without penalty issued1 linked violation
December 12, 2011State Administrative/Compliance Order without penalty issued2 linked violations
November 23, 2011State Public Notification received1 linked violation
October 26, 2011State Public Notification requested1 linked violation
October 26, 2011State Violation/Reminder Notice1 linked violation
August 11, 2011State Other4 linked violations
August 11, 2011State Other1 linked violation
August 9, 2011State Public Notification received1 linked violation
July 26, 2011State Violation/Reminder Notice1 linked violation
July 26, 2011State Public Notification requested1 linked violation
July 26, 2011State Other3 linked violations
May 4, 2011State Public Notification received1 linked violation
April 19, 2011State Public Notification requested1 linked violation
April 19, 2011State Violation/Reminder Notice1 linked violation
September 15, 2010State Public Notification requested21 linked violations
May 15, 2009State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved1 linked violation
May 15, 2009State Compliance achieved2 linked violations
May 15, 2009State Compliance achieved2 linked violations
November 20, 2008State Compliance achieved4 linked violations
July 6, 2007State Variance/Exemption issued2 linked violations
February 14, 2006State Compliance achieved3 linked violations
February 10, 2006State Public Notification requested1 linked violation
February 10, 2006State Public Notification requested1 linked violation
February 10, 2006State Violation/Reminder Notice1 linked violation
July 5, 2002State Violation/Reminder Notice33 linked violations
July 5, 2002State Public Notification requested34 linked violations
May 15, 2001State Compliance achieved1 linked violation
October 11, 2000State Compliance achieved21 linked violations

Common questions

Is WESTBY TOWN OF required to publish a Consumer Confidence Report?: Yes. WESTBY TOWN OF is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is WESTBY TOWN OF’s next Consumer Confidence Report due?: WESTBY TOWN OF’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WESTBY TOWN OF have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for WESTBY TOWN OF.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

EKNESS, JEFFREY

406-385-2445

WESTBY, MT 59275