SHERIDAN, MT · Madison County
SHERIDAN TOWN OF Water System
Consumer Confidence Report status
SHERIDAN 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 SHERIDAN 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)
- MT0000329
- System type
- Community Water System
- Population served
- 632
- Service connections
- 413
- Ownership
- local government
- Water source
- groundwater (wells)
SHERIDAN TOWN OF is one of 123 community water systems in Montana in the 501 to 3,300 people size category, serving 632 people from groundwater.
As of August 1, 2026, its federal record holds 74 entries between 2002 and 2025, all of which EPA lists as closed.
Of the 74, 71 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, Regular
—Nitrate-Nitrite
January 1, 2025 – December 31, 2025
ResolvedLead Consumer Notice
—Lead and Copper Rule
December 30, 2024 – February 18, 2025
ResolvedMonitoring, Regular
—Styrene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Heptachlor
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Heptachlor epoxide
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—2,4-D
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—2,4,5-TP
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—HEXACHLOROBENZENE
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Benzo(a)pyrene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Pentachlorophenol
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Chlordane
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Arsenic
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Xylenes, Total
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—DICHLOROMETHANE
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—p-Dichlorobenzene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Vinyl chloride
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—1,2-Dichloroethane
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Carbon tetrachloride
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—1,2-Dichloropropane
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Trichloroethylene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Tetrachloroethylene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—CHLOROBENZENE
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Benzene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Toluene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Ethylbenzene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Endrin
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—BHC-GAMMA
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Methoxychlor
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Toxaphene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Dalapon
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) adipate
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—OXAMYL
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Simazine
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) phthalate
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Picloram
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Dinoseb
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Hexachlorocyclopentadiene
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Carbofuran
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—Atrazine
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Regular
—LASSO
January 1, 2023 – December 31, 2025
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
March 1, 2017 – March 31, 2017
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2014 – August 6, 2014
ResolvedMonitoring and Reporting (DBP)
—Chlorine
January 1, 2014 – March 31, 2014
ResolvedLead Consumer Notice
—Lead and Copper Rule
January 1, 2014 – August 1, 2016
ResolvedMonitoring and Reporting (DBP)
—Chlorine
October 1, 2013 – December 31, 2013
ResolvedMonitoring and Reporting (DBP)
—Chlorine
October 1, 2013 – December 31, 2013
ResolvedMonitoring and Reporting (DBP)
—Chlorine
October 1, 2013 – December 31, 2013
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2013 – July 19, 2013
ResolvedMonitoring, Regular
—Cadmium
January 1, 2011 – October 23, 2013
ResolvedMonitoring, Regular
—Barium
January 1, 2011 – October 23, 2013
ResolvedMonitoring, Regular
—Chromium
January 1, 2011 – October 23, 2013
ResolvedMonitoring, Regular
—Selenium
January 1, 2011 – October 23, 2013
ResolvedMonitoring, Regular
—Mercury
January 1, 2011 – October 23, 2013
ResolvedMonitoring, Regular
—Asbestos
January 1, 2011 – December 31, 2013
ResolvedMonitoring, Regular
—Fluoride
January 1, 2011 – October 23, 2013
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
October 1, 2010 – September 25, 2013
ResolvedLead Consumer Notice
—Lead and Copper Rule
January 1, 2010 – July 19, 2018
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2009 – December 31, 2009
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Regular
—Nitrate-Nitrite
January 1, 2008 – December 31, 2008
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
October 1, 2007 – June 23, 2009
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
August 1, 2007 – August 31, 2007
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
July 1, 2007 – July 31, 2007
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
April 1, 2007 – April 30, 2007
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
March 1, 2007 – March 31, 2007
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2006 – February 15, 2007
ResolvedMonitoring, Regular
—Nitrate-Nitrite
January 1, 2005 – December 31, 2005
ResolvedMonitoring, Regular
—Antimony, Total
January 1, 2002 – December 31, 2004
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2025 – December 31, 2025 | Monitoring, Regular | Nitrate-Nitrite | — | Resolved |
| December 30, 2024 – February 18, 2025 | Lead Consumer Notice | Lead and Copper Rule | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Styrene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Heptachlor | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Heptachlor epoxide | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | 2,4-D | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | 2,4,5-TP | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | HEXACHLOROBENZENE | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Benzo(a)pyrene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Pentachlorophenol | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Chlordane | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Arsenic | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Xylenes, Total | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | p-Dichlorobenzene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Vinyl chloride | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | 1,1-Dichloroethylene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Carbon tetrachloride | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Trichloroethylene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | CHLOROBENZENE | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Benzene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Toluene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Endrin | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Methoxychlor | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Toxaphene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Dalapon | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Di(2-ethylhexyl) adipate | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | OXAMYL | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Simazine | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Di(2-ethylhexyl) phthalate | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Picloram | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Dinoseb | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Hexachlorocyclopentadiene | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Carbofuran | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Atrazine | — | Resolved |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | LASSO | — | Resolved |
| March 1, 2017 – March 31, 2017 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| July 1, 2014 – August 6, 2014 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| January 1, 2014 – March 31, 2014 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| January 1, 2014 – August 1, 2016 | Lead Consumer Notice | Lead and Copper Rule | — | Resolved |
| October 1, 2013 – December 31, 2013 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| October 1, 2013 – December 31, 2013 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| October 1, 2013 – December 31, 2013 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| July 1, 2013 – July 19, 2013 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| January 1, 2011 – October 23, 2013 | Monitoring, Regular | Cadmium | — | Resolved |
| January 1, 2011 – October 23, 2013 | Monitoring, Regular | Barium | — | Resolved |
| January 1, 2011 – October 23, 2013 | Monitoring, Regular | Chromium | — | Resolved |
| January 1, 2011 – October 23, 2013 | Monitoring, Regular | Selenium | — | Resolved |
| January 1, 2011 – October 23, 2013 | Monitoring, Regular | Mercury | — | Resolved |
| January 1, 2011 – December 31, 2013 | Monitoring, Regular | Asbestos | — | Resolved |
| January 1, 2011 – October 23, 2013 | Monitoring, Regular | Fluoride | — | Resolved |
| October 1, 2010 – September 25, 2013 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| January 1, 2010 – July 19, 2018 | Lead Consumer Notice | Lead and Copper Rule | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| January 1, 2009 – December 31, 2009 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| January 1, 2008 – December 31, 2008 | Monitoring, Regular | Nitrate-Nitrite | — | Resolved |
| October 1, 2007 – June 23, 2009 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| August 1, 2007 – August 31, 2007 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| July 1, 2007 – July 31, 2007 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| April 1, 2007 – April 30, 2007 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| March 1, 2007 – March 31, 2007 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| July 1, 2006 – February 15, 2007 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| January 1, 2005 – December 31, 2005 | Monitoring, Regular | Nitrate-Nitrite | — | Resolved |
| January 1, 2002 – December 31, 2004 | Monitoring, Regular | Antimony, Total | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- January 28, 2026State Compliance achieved21 linked violations
- January 28, 2026State Compliance achieved23 linked violations
- January 28, 2026State Compliance achieved2 linked violations
- January 24, 2026State Public Notification requested21 linked violations
- January 24, 2026State Violation/Reminder Notice21 linked violations
- January 23, 2026State Violation/Reminder Notice23 linked violations
- January 23, 2026State Public Notification requested1 linked violation
- January 23, 2026State Violation/Reminder Notice1 linked violation
- January 23, 2026State Public Notification requested23 linked violations
- January 22, 2026State Compliance achieved1 linked violation
- January 13, 2026State Violation/Reminder Notice1 linked violation
- January 13, 2026State Public Notification requested1 linked violation
- February 18, 2025State Compliance achieved1 linked violation
- February 4, 2025State Violation/Reminder Notice1 linked violation
- July 19, 2018State Compliance achieved1 linked violation
- August 23, 2017State Compliance achieved1 linked violation
- April 14, 2017State Public Notification requested1 linked violation
- April 14, 2017State Violation/Reminder Notice1 linked violation
- April 6, 2017State Compliance achieved1 linked violation
- August 1, 2016State Compliance achieved1 linked violation
- August 6, 2014State Compliance achieved1 linked violation
- July 14, 2014State Violation/Reminder Notice1 linked violation
- June 30, 2014State Compliance achieved1 linked violation
- June 30, 2014State Compliance achieved1 linked violation
- June 30, 2014State Compliance achievedgeneral compliance action — not tied to a specific violation on record
- June 30, 2014State Compliance achieved1 linked violation
- June 30, 2014State Compliance achieved1 linked violation
- April 17, 2014State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
- April 17, 2014State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
- April 17, 2014State Public Notification requested1 linked violation
- April 17, 2014State Violation/Reminder Notice1 linked violation
- January 24, 2014State Violation/Reminder Notice6 linked violations
- January 24, 2014State Violation/Reminder Notice1 linked violation
- January 24, 2014State Public Notification requested6 linked violations
- January 24, 2014State Public Notification requested1 linked violation
- January 23, 2014State Violation/Reminder Notice1 linked violation
- January 16, 2014State Violation/Reminder Notice1 linked violation
- January 16, 2014State Violation/Reminder Notice1 linked violation
- January 16, 2014State Public Notification requested1 linked violation
- January 16, 2014State Public Notification requested1 linked violation
- January 16, 2014State Violation/Reminder Notice1 linked violation
- January 16, 2014State Public Notification requested1 linked violation
- October 23, 2013State Compliance achieved6 linked violations
- September 25, 2013State Compliance achieved1 linked violation
- July 19, 2013State Compliance achieved1 linked violation
- July 16, 2013State Violation/Reminder Notice1 linked violation
- October 31, 2012State Violation/Reminder Notice1 linked violation
- October 31, 2012State Public Notification requested1 linked violation
- January 14, 2011State Violation/Reminder Notice1 linked violation
- October 15, 2010State Compliance achieved2 linked violations
- January 24, 2010State Violation/Reminder Notice2 linked violations
- January 24, 2010State Public Notification requested2 linked violations
- September 25, 2009State Compliance achieved7 linked violations
- June 24, 2009State Public Notification received2 linked violations
- June 24, 2009State Public Notification received6 linked violations
- June 23, 2009State Compliance achieved49 linked violations
- June 23, 2009State Compliance achieved39 linked violations
- May 15, 2009State Compliance achieved4 linked violations
- March 20, 2009State Administrative/Compliance Order with penalty issued11 linked violations
- November 24, 2008State Other3 linked violations
- November 19, 2008State Other6 linked violations
- October 27, 2008State Violation/Reminder Notice3 linked violations
- January 19, 2008State Public Notification requested3 linked violations
- January 19, 2008State Violation/Reminder Notice3 linked violations
- October 29, 2007State Compliance achieved2 linked violations
- September 18, 2007State Public Notification requested2 linked violations
- May 21, 2007State Violation/Reminder Notice3 linked violations
- April 17, 2007State Violation/Reminder Notice2 linked violations
- April 17, 2007State Public Notification requested1 linked violation
- February 15, 2007State Compliance achieved2 linked violations
- February 5, 2007State Violation/Reminder Notice1 linked violation
- February 14, 2006State Compliance achieved1 linked violation
- February 10, 2006State Public Notification requested1 linked violation
- February 10, 2006State Violation/Reminder Notice1 linked violation
- July 6, 2005State Compliance achieved4 linked violations
- April 14, 2005State Violation/Reminder Notice4 linked violations
- April 14, 2005State Public Notification requested5 linked violations
- January 4, 2005State Public Notification requested6 linked violations
- January 4, 2005State Violation/Reminder Notice1 linked violation
Common questions
Is SHERIDAN TOWN OF required to publish a Consumer Confidence Report?
- Yes. SHERIDAN 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 SHERIDAN TOWN OF’s next Consumer Confidence Report due?
- SHERIDAN TOWN OF’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does SHERIDAN TOWN OF have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for SHERIDAN 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
MILLHOUSE, KRISTI
406-842-5431
SHERIDAN, MT 59749