LAFAYETTE, CO · Boulder County

LAFAYETTE CITY OF Water System

Current status

No open violations on record as of July 4, 2026.

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): CO0107473
System type: Community Water System
Population served: 28,700
Service connections: 9,666
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2025 – August 12, 2025
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
July 1, 2025 – July 31, 2025
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2021 – July 14, 2021
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2018 – April 3, 2018
Resolved
Monitoring, Regular
—
Mercury
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
January 1, 2017 – January 31, 2017
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Nickel
January 1, 2017 – December 31, 2017
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
December 1, 2016 – December 31, 2016
Resolved
Monitoring, Source Water (LT2)
—
E. COLI
November 1, 2016 – November 30, 2016
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
October 1, 2013 – October 31, 2013
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Aldicarb
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Picloram
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2005 – December 31, 2007
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
May 1, 1995 – May 31, 1995
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2025 – August 12, 2025	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2025 – July 31, 2025	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
July 1, 2021 – July 14, 2021	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2018 – April 3, 2018	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	Mercury	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2017 – January 31, 2017	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring, Regular	Nickel	—	Resolved
December 1, 2016 – December 31, 2016	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
November 1, 2016 – November 30, 2016	Monitoring, Source Water (LT2)	E. COLI	—	Resolved
October 1, 2013 – October 31, 2013	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Aldicarb	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Picloram	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Methoxychlor	—	Resolved
May 1, 1995 – May 31, 1995	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

January 16, 2026State Public Notification requested3 linked violations
January 16, 2026State Compliance achieved5 linked violations
January 16, 2026State Violation/Reminder Notice3 linked violations
August 14, 2025State Public Notification requested2 linked violations
August 14, 2025State Public Notification requested1 linked violation
August 14, 2025State Public Notification requested2 linked violations
August 12, 2025State Compliance achieved3 linked violations
July 14, 2021State Compliance achieved1 linked violation
July 14, 2021State Public Notification requested2 linked violations
October 1, 2020State Compliance achieved2 linked violations
August 18, 2020State Violation/Reminder Notice1 linked violation
August 18, 2020State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
August 18, 2020State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
August 18, 2020State Public Notification requested1 linked violation
December 20, 2019State Compliance achieved1 linked violation
April 3, 2018State Compliance achieved2 linked violations
January 31, 2018State Public Notification requested11 linked violations
January 23, 2018State Compliance achieved11 linked violations
January 18, 2018State Public Notification requested2 linked violations
March 9, 2017State Public Notification requested4 linked violations
March 9, 2017State Public Notification requested23 linked violations
March 9, 2017State Violation/Reminder Notice6 linked violations
March 9, 2017State Violation/Reminder Notice2 linked violations
March 9, 2017State Public Notification requested3 linked violations
March 9, 2017State Violation/Reminder Notice3 linked violations
March 31, 2016State Compliance achieved2 linked violations
October 11, 2013State Boil Water Order3 linked violations
September 16, 2009State Compliance achieved32 linked violations
August 5, 2008State Public Notification received37 linked violations
February 12, 2008State Public Notification requested32 linked violations
February 12, 2008State Violation/Reminder Notice31 linked violations
October 30, 2007State Violation/Reminder Notice1 linked violation
October 30, 2007State Public Notification requested10 linked violations
October 31, 2003State Violation/Reminder Notice2 linked violations
October 16, 1997State Public Notification requested1 linked violation
August 29, 1996State Formal Notice of Violation issued3 linked violations
June 9, 1995State Formal Notice of Violation issued2 linked violations

Contact

ARTHUR, JEFF

303-661-1282

LAFAYETTE, CO 80026