LAFAYETTE, CO · Boulder County

SAN LAZARO MFCTD HOUSING COMMUNITY Water System

Current status

1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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): CO0107701
System type: Community Water System
Population served: 844
Service connections: 213
Ownership: privately owned
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Sample Siting Plan Errors (RTCR)
—
Revised Total Coliform Rule
October 23, 2025
Unaddressed
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2025 – September 30, 2025
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
April 1, 2025 – April 30, 2025
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
April 1, 2025 – April 30, 2025
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
October 1, 2024 – October 31, 2024
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
October 1, 2024 – October 31, 2024
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
January 1, 2024 – January 31, 2024
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
January 1, 2024 – January 31, 2024
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
December 1, 2023 – December 31, 2023
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
December 1, 2023 – December 31, 2023
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
October 1, 2023 – October 31, 2023
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
October 1, 2023 – October 31, 2023
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
May 1, 2023 – May 31, 2023
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
May 1, 2023 – May 31, 2023
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
April 1, 2023 – June 30, 2023
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
August 1, 2022 – August 4, 2022
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
July 1, 2022 – July 31, 2022
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
June 1, 2022 – June 30, 2022
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
May 1, 2022 – May 31, 2022
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
April 1, 2022 – April 30, 2022
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2022 – June 30, 2022
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2022 – June 30, 2022
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Styrene
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Toluene
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Benzene
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2022 – December 31, 2022
Resolved
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, Routine (RTCR)
—
Revised Total Coliform Rule
December 1, 2021 – December 31, 2021
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
December 1, 2021 – December 31, 2021
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
October 1, 2021 – October 31, 2021
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
October 1, 2021 – October 31, 2021
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
August 1, 2021 – August 31, 2021
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
March 1, 2021 – March 31, 2021
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
March 1, 2021 – March 31, 2021
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
July 1, 2020 – July 31, 2020
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
July 1, 2020 – July 31, 2020
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
March 1, 2020 – March 31, 2020
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
March 1, 2020 – March 31, 2020
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2020 – March 31, 2020
Archived
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2020 – March 31, 2020
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
November 1, 2019 – November 30, 2019
Resolved
Public Notification Violation without NPDWR Violation
—
Public Notice
October 29, 2018 – June 27, 2019
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
August 1, 2018 – August 31, 2018
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
May 1, 2018 – May 31, 2018
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
April 1, 2018 – April 30, 2018
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
June 1, 2017 – June 30, 2017
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
June 1, 2017 – June 30, 2017
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
April 1, 2017 – June 30, 2017
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Benzene
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Toluene
January 1, 2017 – December 31, 2017
Resolved
Treatment Technique No Certif. Operator
Health-based
Stage 1 Disinfectants and Disinfection Byproducts Rule
July 1, 2016 – July 16, 2016
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2016 – June 30, 2017
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2014 – March 31, 2014
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2014 – March 31, 2014
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
August 1, 2012 – August 31, 2012
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2012 – June 19, 2014
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2012 – September 30, 2012
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2010 – June 30, 2010
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2010 – June 30, 2010
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Styrene
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Toluene
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Benzene
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Toluene
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
May 1, 2008 – May 31, 2008
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Toluene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Benzene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Styrene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Turbidity (Enhanced SWTR)
—
Interim Enhanced Surface Water Treatment Rule
December 1, 2007 – December 31, 2007
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
August 1, 2007 – August 31, 2007
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
July 1, 2007 – September 30, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 1993 – June 30, 1993
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
October 23, 2025	Sample Siting Plan Errors (RTCR)	Revised Total Coliform Rule	—	Unaddressed
July 1, 2025 – September 30, 2025	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
April 1, 2025 – April 30, 2025	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
April 1, 2025 – April 30, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
October 1, 2024 – October 31, 2024	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
October 1, 2024 – October 31, 2024	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2024 – January 31, 2024	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
January 1, 2024 – January 31, 2024	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
December 1, 2023 – December 31, 2023	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
December 1, 2023 – December 31, 2023	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
October 1, 2023 – October 31, 2023	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
October 1, 2023 – October 31, 2023	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
May 1, 2023 – May 31, 2023	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
May 1, 2023 – May 31, 2023	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
April 1, 2023 – June 30, 2023	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
August 1, 2022 – August 4, 2022	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
July 1, 2022 – July 31, 2022	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
June 1, 2022 – June 30, 2022	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
May 1, 2022 – May 31, 2022	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
April 1, 2022 – April 30, 2022	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
April 1, 2022 – June 30, 2022	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
April 1, 2022 – June 30, 2022	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	Styrene	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	Toluene	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	Benzene	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
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
December 1, 2021 – December 31, 2021	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
December 1, 2021 – December 31, 2021	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
October 1, 2021 – October 31, 2021	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
October 1, 2021 – October 31, 2021	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
August 1, 2021 – August 31, 2021	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
March 1, 2021 – March 31, 2021	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
March 1, 2021 – March 31, 2021	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
July 1, 2020 – July 31, 2020	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
July 1, 2020 – July 31, 2020	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
March 1, 2020 – March 31, 2020	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
March 1, 2020 – March 31, 2020	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2020 – March 31, 2020	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Archived
January 1, 2020 – March 31, 2020	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
November 1, 2019 – November 30, 2019	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
October 29, 2018 – June 27, 2019	Public Notification Violation without NPDWR Violation	Public Notice	—	Resolved
August 1, 2018 – August 31, 2018	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
May 1, 2018 – May 31, 2018	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
April 1, 2018 – April 30, 2018	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
June 1, 2017 – June 30, 2017	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
June 1, 2017 – June 30, 2017	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
April 1, 2017 – June 30, 2017	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Archived
January 1, 2017 – December 31, 2017	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	Benzene	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	Toluene	—	Resolved
July 1, 2016 – July 16, 2016	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Health-based	Resolved
July 1, 2016 – June 30, 2017	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2014 – March 31, 2014	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2014 – March 31, 2014	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
August 1, 2012 – August 31, 2012	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
July 1, 2012 – June 19, 2014	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
April 1, 2010 – June 30, 2010	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2010 – June 30, 2010	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	Styrene	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	Toluene	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	Benzene	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Toluene	—	Resolved
May 1, 2008 – May 31, 2008	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Toluene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Benzene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Styrene	—	Resolved
December 1, 2007 – December 31, 2007	Monitoring, Turbidity (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	—	Resolved
August 1, 2007 – August 31, 2007	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
July 1, 2007 – September 30, 2007	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
June 1, 1993 – June 30, 1993	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved

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

Enforcement actions

October 23, 2025State Public Notification requested33 linked violations
October 15, 2025State Public Notification requested4 linked violations
October 15, 2025State Violation/Reminder Notice5 linked violations
May 13, 2025State Public Notification requested2 linked violations
May 13, 2025State Violation/Reminder Notice2 linked violations
November 21, 2024State Public Notification requested3 linked violations
November 21, 2024State Violation/Reminder Notice2 linked violations
November 11, 2024State Compliance achieved3 linked violations
February 15, 2024State Public Notification requested3 linked violations
February 12, 2024State Compliance achieved5 linked violations
January 17, 2024State Public Notification requested1 linked violation
January 17, 2024State Violation/Reminder Notice1 linked violation
January 17, 2024State Violation/Reminder Notice1 linked violation
January 17, 2024State Public Notification requested2 linked violations
January 11, 2024State Compliance achieved5 linked violations
December 10, 2023State Compliance achieved2 linked violations
November 15, 2023State Public Notification requested1 linked violation
November 15, 2023State Violation/Reminder Notice1 linked violation
November 15, 2023State Violation/Reminder Notice1 linked violation
November 15, 2023State Public Notification requested1 linked violation
September 7, 2023State Compliance achieved21 linked violations
August 10, 2023State Compliance achieved32 linked violations
July 21, 2023State Public Notification requested1 linked violation
July 21, 2023State Violation/Reminder Notice1 linked violation
July 10, 2023State Compliance achieved2 linked violations
June 15, 2023State Violation/Reminder Notice1 linked violation
June 15, 2023State Public Notification requested1 linked violation
June 15, 2023State Public Notification requested1 linked violation
June 15, 2023State Violation/Reminder Notice1 linked violation
November 7, 2022State Public Notification requested21 linked violations
November 7, 2022State Violation/Reminder Notice21 linked violations
September 26, 2022State Violation/Reminder Notice1 linked violation
September 26, 2022State Public Notification requested1 linked violation
September 26, 2022State Violation/Reminder Notice1 linked violation
September 26, 2022State Public Notification requested1 linked violation
August 10, 2022State Compliance achieved4 linked violations
August 4, 2022State Compliance achieved4 linked violations
August 4, 2022State Compliance achieved1 linked violation
July 8, 2022State Public Notification requested1 linked violation
July 8, 2022State Violation/Reminder Notice1 linked violation
July 1, 2022State Public Notification requested2 linked violations
July 1, 2022State Violation/Reminder Notice2 linked violations
May 18, 2022State Public Notification requested1 linked violation
May 18, 2022State Public Notification requested3 linked violations
May 10, 2022State Public Notification requested3 linked violations
January 31, 2022State Compliance achieved4 linked violations
January 18, 2022State Public Notification requested2 linked violations
January 18, 2022State Public Notification requested2 linked violations
January 18, 2022State Violation/Reminder Notice1 linked violation
November 18, 2021State Public Notification requested1 linked violation
November 18, 2021State Public Notification requested1 linked violation
November 18, 2021State Violation/Reminder Notice1 linked violation
October 14, 2021State Compliance achieved2 linked violations
September 13, 2021State Public Notification received1 linked violation
August 31, 2021State Public Notification requested1 linked violation
August 31, 2021State Violation/Reminder Notice1 linked violation
April 21, 2021State Public Notification requested1 linked violation
April 21, 2021State Violation/Reminder Notice2 linked violations
August 18, 2020State Public Notification requested2 linked violations
August 18, 2020State Violation/Reminder Notice2 linked violations
May 6, 2020State Public Notification requested3 linked violations
May 6, 2020State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
May 6, 2020State Public Notification requested2 linked violations
May 6, 2020State Public Notification requested2 linked violations
May 6, 2020State Violation/Reminder Notice1 linked violation
February 7, 2020State Public Notification received34 linked violations
January 1, 2020State Compliance achieved3 linked violations
December 13, 2019State Violation/Reminder Notice2 linked violations
December 13, 2019State Public Notification requested2 linked violations
December 4, 2018State Public Notification requested1 linked violation
December 4, 2018State Violation/Reminder Notice1 linked violation
December 4, 2018State Public Notification requested31 linked violations
December 4, 2018State Public Notification requested1 linked violation
December 4, 2018State Violation/Reminder Notice1 linked violation
December 4, 2018State Public Notification requested1 linked violation
December 4, 2018State Violation/Reminder Notice1 linked violation
December 4, 2018State Public Notification requested1 linked violation
December 4, 2018State Violation/Reminder Notice1 linked violation
December 4, 2018State Public Notification requested1 linked violation
December 4, 2018State Violation/Reminder Notice1 linked violation
September 28, 2018State Compliance achieved23 linked violations
November 10, 2017State Public Notification requested1 linked violation
November 10, 2017State Violation/Reminder Notice1 linked violation
November 10, 2017State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
November 7, 2017State Public Notification requested21 linked violations
November 7, 2017State Violation/Reminder Notice21 linked violations
September 7, 2017State Compliance achieved2 linked violations
August 11, 2017State Public Notification requested1 linked violation
August 11, 2017State Violation/Reminder Notice2 linked violations
August 11, 2017State Violation/Reminder Notice1 linked violation
August 11, 2017State Public Notification requested2 linked violations
August 11, 2017State Public Notification requested2 linked violations
August 10, 2017State Violation/Reminder Notice3 linked violations
August 3, 2016State Public Notification requested3 linked violations
October 1, 2014State Compliance achieved4 linked violations
June 19, 2014State Compliance achieved2 linked violations
February 5, 2013State Compliance achieved3 linked violations
October 23, 2012State Public Notification requested2 linked violations
September 6, 2011State Compliance achieved22 linked violations
June 23, 2011State Public Notification received24 linked violations
August 6, 2010State Public Notification requested3 linked violations
August 6, 2010State Violation/Reminder Notice3 linked violations
January 29, 2009State Violation/Reminder Notice2 linked violations
January 29, 2009State Public Notification requested2 linked violations
January 29, 2009State Public Notification requested22 linked violations
September 3, 2008State Compliance achieved2 linked violations
August 25, 2008State Compliance achieved3 linked violations
June 26, 2008State Public Notification requested2 linked violations
March 17, 2008State Violation/Reminder Notice2 linked violations
September 27, 2007State Violation/Reminder Notice3 linked violations

Contact

EISENSTEIN, DAVID

303-443-4434

LAFAYETTE, CO 80026