Is WILSON MESA required to publish a Consumer Confidence Report?

Yes. WILSON MESA 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 WILSON MESA’s next Consumer Confidence Report due?

WILSON MESA’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.

TELLURIDE, CO · San Miguel County

WILSON MESA Water System

Consumer Confidence Report status

WILSON MESA 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 1 item for WILSON MESA that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

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

System facts

System ID (PWSID): CO0157950
System type: Community Water System
Population served: 290
Service connections: 65
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

WILSON MESA is one of 1,060 community water systems in Colorado in the 500 or fewer people size category, serving 290 people from surface water.

As of August 1, 2026, its federal record holds 24 entries between 1992 and 2026, of which 1 remains open; none are health-based.

Of the 24, 19 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 the Surface Water Treatment Rules, volatile organic chemicals, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.

Violation history

Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
January 1, 2026 – January 31, 2026
Archived
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2025
Unaddressed
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
March 1, 2025 – March 31, 2025
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
May 1, 2024 – May 31, 2024
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
May 1, 2024 – May 31, 2024
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2019 – March 31, 2019
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2018 – September 30, 2018
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
April 1, 2018 – June 30, 2018
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
August 1, 2017 – August 31, 2017
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Toluene
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Styrene
January 1, 2009 – December 31, 2009
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2008 – March 31, 2008
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 1999 – May 31, 1999
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 1998 – June 30, 1998
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
June 1, 1997 – June 30, 1997
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 1997 – May 31, 1997
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
May 1, 1995 – May 31, 1995
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
May 1, 1992 – May 31, 1992
Resolved

Archived closed in EPA's records (typically due to age or a data correction)Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2026 – January 31, 2026	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Archived
July 1, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Unaddressed
March 1, 2025 – March 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
May 1, 2024 – May 31, 2024	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
May 1, 2024 – May 31, 2024	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2019 – March 31, 2019	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2018 – September 30, 2018	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
April 1, 2018 – June 30, 2018	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
August 1, 2017 – August 31, 2017	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Toluene	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Styrene	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
May 1, 1999 – May 31, 1999	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
June 1, 1998 – June 30, 1998	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
June 1, 1997 – June 30, 1997	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
May 1, 1997 – May 31, 1997	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
May 1, 1995 – May 31, 1995	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
May 1, 1992 – May 31, 1992	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved

Archived closed in EPA's records (typically due to age or a data correction)Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Enforcement actions

February 18, 2026State Public Notification requested37 linked violations
February 18, 2026State Public Notification requested2 linked violations
February 18, 2026State Violation/Reminder Notice10 linked violations
April 24, 2025State Violation/Reminder Notice1 linked violation
April 24, 2025State Violation/Reminder Notice6 linked violations
April 24, 2025State Public Notification requested4 linked violations
December 26, 2024State Public Notification requested2 linked violations
December 26, 2024State Public Notification requested1 linked violation
October 28, 2024State Violation/Reminder Notice2 linked violations
October 28, 2024State Public Notification requested2 linked violations
July 9, 2024State Compliance achieved2 linked violations
June 28, 2024State Public Notification requested2 linked violations
June 28, 2024State Violation/Reminder Notice2 linked violations
February 23, 2024State Public Notification requested3 linked violations
February 23, 2024State Violation/Reminder Notice3 linked violations
February 13, 2024State Compliance achieved6 linked violations
January 23, 2024State Violation/Reminder Notice3 linked violations
January 23, 2024State Public Notification requested3 linked violations
October 17, 2023State Violation/Reminder Notice2 linked violations
October 17, 2023State Public Notification requested2 linked violations
July 11, 2023State Public Notification requested2 linked violations
September 12, 2019State Public Notification requested4 linked violations
September 12, 2019State Violation/Reminder Notice3 linked violations
August 6, 2019State Compliance achieved4 linked violations
June 11, 2019State Compliance achieved3 linked violations
March 20, 2019State Violation/Reminder Notice6 linked violations
October 22, 2018State Compliance achieved3 linked violations
October 15, 2018State Public Notification requested1 linked violation
October 15, 2018State Violation/Reminder Notice1 linked violation
October 8, 2018State Compliance achieved2 linked violations
October 8, 2018State Compliance achieved3 linked violations
September 17, 2018State Violation/Reminder Notice7 linked violations
August 8, 2018State Public Notification requested5 linked violations
August 8, 2018State Public Notification requested4 linked violations
July 5, 2018State Public Notification requested3 linked violations
May 2, 2018State Public Notification requested4 linked violations
October 4, 2017State Violation/Reminder Notice3 linked violations
October 4, 2017State Public Notification requested2 linked violations
November 15, 2013State Compliance achieved1 linked violation
September 15, 2010State Compliance achieved26 linked violations
May 25, 2010State Public Notification received23 linked violations
February 10, 2010State Public Notification requested23 linked violations
June 19, 2009State Compliance achieved5 linked violations
June 27, 2008State Compliance achieved7 linked violations
April 10, 2008State Compliance achieved8 linked violations
October 30, 2007State Violation/Reminder Notice8 linked violations
April 19, 2005State Violation/Reminder Notice13 linked violations
July 16, 1998State Public Notification requested2 linked violations
June 8, 1998State Public Notification requested1 linked violation
July 31, 1997State Public Notification requested1 linked violation
July 18, 1995State Public Notification requested1 linked violation
June 26, 1995State Formal Notice of Violation issued1 linked violation
June 26, 1995State Public Notification requested2 linked violations
November 24, 1993State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
November 24, 1993State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 24, 1993State Public Notification requested3 linked violations
November 24, 1993State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
November 24, 1993State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
September 3, 1993State Formal Notice of Violation issued1 linked violation
September 3, 1993State Public Notification requested1 linked violation
August 2, 1993State Public Notification requested4 linked violations
July 30, 1993State Public Notification requested1 linked violation
July 30, 1993State Formal Notice of Violation issued1 linked violation
February 22, 1993State Formal Notice of Violation issued1 linked violation
February 18, 1993State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
December 11, 1992State Formal Notice of Violation issued2 linked violations
December 11, 1992State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
December 11, 1992State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
December 11, 1992State Public Notification requested1 linked violation
August 12, 1992State Public Notification requested1 linked violation
August 12, 1992State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
August 12, 1992State Formal Notice of Violation issued1 linked violation
June 5, 1992State Formal Notice of Violation issued1 linked violation

Common questions

Is WILSON MESA required to publish a Consumer Confidence Report?: Yes. WILSON MESA 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 WILSON MESA’s next Consumer Confidence Report due?: WILSON MESA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WILSON MESA have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 1 item for WILSON MESA that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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

ELLINWOOD, WILLIAM

970-250-2892

TELLURIDE, CO 81435