LARKSPUR, CO · Douglas County

LARKSPUR TOWN 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): CO0118030
System type: Community Water System
Population served: 275
Service connections: 109
Ownership: local government
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2023 – December 31, 2023
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
July 1, 2023 – September 30, 2023
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2023 – June 30, 2023
Resolved
Monitoring, Regular
—
Styrene
January 1, 2023 – November 16, 2023
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2023 – November 16, 2023
Resolved
Monitoring, Regular
—
Toluene
January 1, 2023 – November 16, 2023
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2023 – November 16, 2023
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2023 – November 16, 2023
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2023 – November 16, 2023
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2023 – November 16, 2023
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2023 – November 16, 2023
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2023 – November 16, 2023
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2023 – November 16, 2023
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2023 – November 16, 2023
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2023 – November 16, 2023
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2023 – November 16, 2023
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2022 – March 31, 2022
Resolved
Public Notification Violation without NPDWR Violation
—
Public Notice
June 23, 2020 – July 20, 2020
Resolved
Public Notification Violation without NPDWR Violation
—
Public Notice
March 23, 2020 – July 20, 2020
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2019 – May 14, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2019 – March 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
October 1, 2018 – December 31, 2018
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2018 – July 5, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
April 1, 2018 – June 30, 2018
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2023 – December 31, 2023	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2023 – September 30, 2023	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
April 1, 2023 – June 30, 2023	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
January 1, 2023 – November 16, 2023	Monitoring, Regular	Styrene	—	Resolved
January 1, 2023 – November 16, 2023	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2023 – November 16, 2023	Monitoring, Regular	Toluene	—	Resolved
January 1, 2023 – November 16, 2023	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2023 – November 16, 2023	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2023 – November 16, 2023	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2023 – November 16, 2023	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2023 – November 16, 2023	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2023 – November 16, 2023	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2023 – November 16, 2023	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2023 – November 16, 2023	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2023 – November 16, 2023	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2023 – November 16, 2023	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2022 – March 31, 2022	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
June 23, 2020 – July 20, 2020	Public Notification Violation without NPDWR Violation	Public Notice	—	Resolved
March 23, 2020 – July 20, 2020	Public Notification Violation without NPDWR Violation	Public Notice	—	Resolved
January 1, 2019 – May 14, 2019	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2019 – March 31, 2019	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2018 – December 31, 2018	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
July 1, 2018 – July 5, 2018	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
April 1, 2018 – June 30, 2018	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

August 13, 2024State Compliance achieved29 linked violations
January 16, 2024State Violation/Reminder Notice25 linked violations
July 13, 2023State Public Notification requested3 linked violations
March 16, 2023State Public Notification requested7 linked violations
May 4, 2022State Violation/Reminder Notice12 linked violations
October 13, 2020State Violation/Reminder Notice3 linked violations
June 26, 2019State Administrative/Compliance Order without penalty issued8 linked violations
April 18, 2019State Public Notification requested6 linked violations
January 14, 2019State Public Notification requested5 linked violations
January 10, 2001State Violation/Reminder Notice2 linked violations

Contact

WEST, SHERILYN

720-828-6211

LARKSPUR, CO 80118