Is WILLOW CREEK MHP required to publish a Consumer Confidence Report?

Yes. WILLOW CREEK MHP 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 WILLOW CREEK MHP’s next Consumer Confidence Report due?

WILLOW CREEK MHP’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.

HARRAH, OK · Oklahoma County

WILLOW CREEK MHP Water System

Consumer Confidence Report status

WILLOW CREEK MHP 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 WILLOW CREEK MHP.

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 Oklahoma’s official records. Always confirm current status with Oklahoma before making decisions based on this information.

System facts

System ID (PWSID): OK2005535
System type: Community Water System
Population served: 99
Service connections: 50
Ownership: privately owned
Water source: groundwater (wells)

WILLOW CREEK MHP is one of 1,277 community water systems in Oklahoma in the 500 or fewer people size category, serving 99 people from groundwater.

As of August 1, 2026, its federal record holds 145 entries between 1992 and 2025, all of which EPA lists as closed.

Of the 145, 138 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 the Total Coliform Rules.

Violation history

Monitoring, Regular
—
2,4-D
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Dinoseb
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Picloram
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Dalapon
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
2,4,5-TP
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Pentachlorophenol
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
LASSO
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Picloram
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Simazine
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Endothall
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Diquat
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Endrin
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2025 – March 31, 2025
Resolved
LSL Reporting
—
LEAD AND COPPER RULE REVISIONS
October 17, 2024 – July 15, 2025
Resolved
LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024 – July 15, 2025
Resolved
Monitoring, Regular
—
Endrin
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Chlordane
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Pentachlorophenol
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
2,4,5-TP
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
2,4-D
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Heptachlor epoxide
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Heptachlor
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
LASSO
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Atrazine
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Carbofuran
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Dinoseb
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Picloram
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Simazine
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Glyphosate
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Methoxychlor
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
BHC-GAMMA
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Simazine
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Endrin
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
BHC-GAMMA
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Toxaphene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Dalapon
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
OXAMYL
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Picloram
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Dinoseb
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Carbofuran
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
LASSO
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Heptachlor
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
2,4-D
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Regular
—
Chlordane
July 1, 2024 – September 30, 2024
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
November 22, 2018 – May 20, 2024
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
May 30, 2015 – May 20, 2024
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2014 – June 30, 2015
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2013 – June 30, 2015
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2012 – June 30, 2015
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2011 – December 31, 2011
Resolved
Public Education
Health-based
Lead and Copper Rule
April 11, 2011 – February 15, 2012
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
Toluene
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
Styrene
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
April 1, 2010 – April 30, 2010
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
April 1, 2010 – April 30, 2010
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
October 1, 2009 – June 24, 2010
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Styrene
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Toluene
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Benzene
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2009 – December 31, 2009
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 2008 – April 30, 2008
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 2006 – May 31, 2006
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2005 – August 31, 2005
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
July 1, 2004 – September 30, 2004
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
July 1, 2004 – September 30, 2004
Resolved
Monitoring, Regular
—
Trichloroethylene
April 1, 2004 – June 30, 2004
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
April 1, 2004 – June 30, 2004
Resolved
Monitoring, Regular
—
Carbon tetrachloride
April 1, 2004 – June 30, 2004
Resolved
Monitoring, Regular
—
Toluene
April 1, 2004 – June 30, 2004
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
April 1, 2004 – June 30, 2004
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
April 1, 2004 – June 30, 2004
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
October 1, 2003 – October 31, 2003
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2003 – August 31, 2003
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 2003 – September 30, 2003
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
July 1, 2003 – September 30, 2003
Resolved
Monitoring, Regular
—
Xylenes, Total
July 1, 2003 – September 30, 2003
Resolved
Monitoring, Regular
—
Ethylbenzene
July 1, 2003 – September 30, 2003
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
July 1, 2003 – September 30, 2003
Resolved
Monitoring, Regular
—
Trichloroethylene
July 1, 2003 – September 30, 2003
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
July 1, 2003 – September 30, 2003
Resolved
Monitoring, Regular
—
Toluene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 1992 – May 31, 1992
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2025 – September 30, 2025	Monitoring, Regular	2,4-D	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Dinoseb	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Picloram	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Dalapon	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	2,4,5-TP	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	LASSO	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Picloram	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Simazine	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Endothall	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Diquat	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Endrin	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Pentachlorophenol	—	Resolved
October 17, 2024 – July 15, 2025	LSL Reporting	LEAD AND COPPER RULE REVISIONS	—	Resolved
October 17, 2024 – July 15, 2025	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Endrin	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Chlordane	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Pentachlorophenol	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	2,4,5-TP	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	2,4-D	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Heptachlor epoxide	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Heptachlor	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	LASSO	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Atrazine	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Carbofuran	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Dinoseb	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Picloram	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Simazine	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Glyphosate	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Methoxychlor	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	BHC-GAMMA	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Simazine	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Endrin	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	BHC-GAMMA	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Toxaphene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Dalapon	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	OXAMYL	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Picloram	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Dinoseb	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Carbofuran	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	LASSO	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Heptachlor	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	2,4-D	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring, Regular	Chlordane	—	Resolved
November 22, 2018 – May 20, 2024	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
May 30, 2015 – May 20, 2024	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
July 1, 2014 – June 30, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2013 – June 30, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2012 – June 30, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
December 1, 2011 – December 31, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 11, 2011 – February 15, 2012	Public Education	Lead and Copper Rule	Health-based	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	Toluene	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	Styrene	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
April 1, 2010 – April 30, 2010	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 2010 – April 30, 2010	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
October 1, 2009 – June 24, 2010	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Styrene	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Toluene	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Benzene	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
April 1, 2008 – April 30, 2008	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
May 1, 2006 – May 31, 2006	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
August 1, 2005 – August 31, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2004 – September 30, 2004	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
July 1, 2004 – September 30, 2004	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
April 1, 2004 – June 30, 2004	Monitoring, Regular	Trichloroethylene	—	Resolved
April 1, 2004 – June 30, 2004	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
April 1, 2004 – June 30, 2004	Monitoring, Regular	Carbon tetrachloride	—	Resolved
April 1, 2004 – June 30, 2004	Monitoring, Regular	Toluene	—	Resolved
April 1, 2004 – June 30, 2004	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
April 1, 2004 – June 30, 2004	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
October 1, 2003 – October 31, 2003	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 2003 – August 31, 2003	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2003 – September 30, 2003	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 2003 – September 30, 2003	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
July 1, 2003 – September 30, 2003	Monitoring, Regular	Xylenes, Total	—	Resolved
July 1, 2003 – September 30, 2003	Monitoring, Regular	Ethylbenzene	—	Resolved
July 1, 2003 – September 30, 2003	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
July 1, 2003 – September 30, 2003	Monitoring, Regular	Trichloroethylene	—	Resolved
July 1, 2003 – September 30, 2003	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Toluene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
May 1, 1992 – May 31, 1992	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

February 2, 2026State Compliance achieved1 linked violation
February 2, 2026State Compliance achieved1 linked violation
February 2, 2026State Compliance achieved1 linked violation
February 2, 2026State Compliance achieved1 linked violation
February 2, 2026State Compliance achieved1 linked violation
November 21, 2025State Violation/Reminder Notice6 linked violations
November 21, 2025State Public Notification requested6 linked violations
August 25, 2025State Compliance achieved30 linked violations
August 25, 2025State Compliance achieved29 linked violations
July 15, 2025State Compliance achieved1 linked violation
July 15, 2025State Compliance achieved1 linked violation
June 30, 2025State Public Notification received29 linked violations
June 26, 2025State Public Notification received1 linked violation
June 26, 2025State Public Notification received29 linked violations
June 3, 2025State Public Notification requested29 linked violations
June 3, 2025State Violation/Reminder Notice29 linked violations
March 6, 2025State Public Notification requested29 linked violations
March 6, 2025State Violation/Reminder Notice29 linked violations
November 22, 2024State Public Notification requested29 linked violations
November 22, 2024State Violation/Reminder Notice29 linked violations
May 20, 2024State Compliance achieved1 linked violation
May 20, 2024State Compliance achieved1 linked violation
November 16, 2023State Compliance achieved1 linked violation
September 22, 2023State Public Notification requested1 linked violation
September 22, 2023State Violation/Reminder Notice1 linked violation
November 22, 2022State Intentional no-action1 linked violation
November 22, 2022State Intentional no-action1 linked violation
December 5, 2019State Public Notification received1 linked violation
January 18, 2019State Public Notification requested1 linked violation
January 18, 2019State Violation/Reminder Notice1 linked violation
June 21, 2017State Compliance achieved21 linked violations
June 13, 2017State Public Notification received21 linked violations
April 20, 2017State Public Notification requested21 linked violations
April 20, 2017State Violation/Reminder Notice21 linked violations
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
August 4, 2016State Compliance achieved1 linked violation
July 5, 2016State Public Notification received1 linked violation
March 18, 2016State Public Notification requested1 linked violation
March 18, 2016State Violation/Reminder Notice1 linked violation
June 30, 2015State Compliance achieved3 linked violations
January 14, 2015State Violation/Reminder Notice1 linked violation
February 15, 2012State Compliance achieved1 linked violation
June 8, 2011State Violation/Reminder Notice1 linked violation
June 24, 2010State Compliance achieved1 linked violation
June 11, 2010State Public Notification requested1 linked violation
June 11, 2010State Violation/Reminder Notice1 linked violation
June 9, 2010Federal Compliance achieved1 linked violation
February 15, 2010State Compliance achieved21 linked violations
February 11, 2010State Compliance achieved1 linked violation
January 19, 2010State Public Notification requested1 linked violation
January 19, 2010State Violation/Reminder Notice1 linked violation
January 13, 2010State Public Notification requested21 linked violations
January 13, 2010State Violation/Reminder Notice21 linked violations
May 21, 2008State Public Notification requested1 linked violation
May 21, 2008State Violation/Reminder Notice1 linked violation
May 1, 2008State Compliance achieved1 linked violation
August 20, 2007State Public Notification received1 linked violation
July 26, 2007State Public Notification requested1 linked violation
July 26, 2007State Administrative/Compliance Order with penalty issued1 linked violation
February 6, 2007State Violation/Reminder Notice1 linked violation
January 1, 2007State Compliance achieved5 linked violations
October 20, 2005State Public Notification requested5 linked violations
April 26, 2005State Violation/Reminder Notice2 linked violations
November 18, 2004State Administrative/Compliance Order with penalty issued20 linked violations
November 18, 2004State Public Notification requested20 linked violations
August 27, 2004State Violation/Reminder Notice22 linked violations
December 30, 2003State Compliance achieved3 linked violations
December 30, 2003State Public Notification received29 linked violations
November 20, 2003State Violation/Reminder Notice1 linked violation
October 22, 2003State Violation/Reminder Notice1 linked violation
October 22, 2003State Public Notification requested1 linked violation
October 6, 2003State Public Notification requested1 linked violation
October 6, 2003State Violation/Reminder Notice1 linked violation
September 25, 2003State Violation/Reminder Notice6 linked violations
August 28, 2003State Public Notification requested2 linked violations
August 28, 2003State Violation/Reminder Notice2 linked violations
December 10, 2002State Compliance achieved20 linked violations

Common questions

Is WILLOW CREEK MHP required to publish a Consumer Confidence Report?: Yes. WILLOW CREEK MHP 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 WILLOW CREEK MHP’s next Consumer Confidence Report due?: WILLOW CREEK MHP’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WILLOW CREEK MHP have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for WILLOW CREEK MHP.
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

WILLOW CREEK MHP

405-226-2294

HARRAH, OK 73045