SAN LUIS, CO · Costilla County

SAN ACACIO DOMESTIC WA 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): CO0112850
System type: Community Water System
Population served: 40
Service connections: 27
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2021 – January 4, 2022
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Endothall
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Picloram
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Barium
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Mercury
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Benzene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Toluene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Styrene
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2020 – December 31, 2022
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2017 – September 30, 2017
Resolved
Treatment Technique No Certif. Operator
Health-based
Stage 1 Disinfectants and Disinfection Byproducts Rule
August 1, 2017 – April 16, 2018
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2017 – June 30, 2017
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2015 – July 22, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Aldicarb sulfone
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 1995 – December 31, 1995
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 1992 – December 31, 1995
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2021 – January 4, 2022	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Endothall	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Picloram	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Barium	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Mercury	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Benzene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Toluene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Styrene	—	Resolved
January 1, 2020 – December 31, 2022	Monitoring, Regular	Dalapon	—	Resolved
September 1, 2017 – September 30, 2017	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
August 1, 2017 – April 16, 2018	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Health-based	Resolved
April 1, 2017 – June 30, 2017	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2015 – July 22, 2016	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
June 1, 2006 – June 30, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Aldicarb sulfone	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
December 1, 1995 – December 31, 1995	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1992 – December 31, 1995	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

December 10, 2025State Compliance achieved1 linked violation
October 15, 2025State Compliance achieved2 linked violations
September 29, 2025State Administrative/Compliance Order with penalty issued8 linked violations
September 26, 2025State Violation/Reminder Notice4 linked violations
June 30, 2025State Compliance achieved1 linked violation
January 3, 2025State Public Notification requested3 linked violations
November 7, 2024State Violation/Reminder Notice3 linked violations
November 7, 2024State Violation/Reminder Notice12 linked violations
July 31, 2023State Compliance achieved5 linked violations
April 17, 2023State Compliance achieved3 linked violations
February 16, 2023State Public Notification requested2 linked violations
February 16, 2023State Public Notification requested2 linked violations
February 16, 2023State Violation/Reminder Notice3 linked violations
January 25, 2023State Public Notification requested1 linked violation
January 25, 2023State Public Notification requested31 linked violations
January 25, 2023State Violation/Reminder Notice31 linked violations
January 25, 2023State Public Notification requested21 linked violations
January 25, 2023State Violation/Reminder Notice21 linked violations
January 25, 2023State Public Notification requested10 linked violations
January 25, 2023State Violation/Reminder Notice10 linked violations
January 25, 2023State Violation/Reminder Notice1 linked violation
January 24, 2023State Public Notification requested1 linked violation
January 24, 2023State Violation/Reminder Notice1 linked violation
January 13, 2023State Public Notification requested1 linked violation
January 13, 2023State Public Notification requested1 linked violation
January 13, 2023State Violation/Reminder Notice1 linked violation
January 13, 2023State Violation/Reminder Notice1 linked violation
January 10, 2023State Violation/Reminder Notice1 linked violation
January 10, 2023State Public Notification requested1 linked violation
June 29, 2022State Compliance achieved1 linked violation
February 4, 2022State Public Notification requested1 linked violation
February 4, 2022State Violation/Reminder Notice1 linked violation
January 4, 2022State Compliance achieved2 linked violations
January 3, 2022State Public Notification requested1 linked violation
January 3, 2022State Violation/Reminder Notice1 linked violation
August 9, 2021State Compliance achieved2 linked violations
August 5, 2021State Compliance achieved1 linked violation
July 14, 2021State Violation/Reminder Notice1 linked violation
July 14, 2021State Public Notification requested1 linked violation
January 14, 2021State Violation/Reminder Notice3 linked violations
August 4, 2020State Boil Water Ordergeneral compliance action — not tied to a specific violation on record
January 9, 2020State Violation/Reminder Notice2 linked violations
January 3, 2020State Compliance achieved2 linked violations
December 17, 2019State Compliance achieved2 linked violations
December 4, 2019State Compliance achieved2 linked violations
February 15, 2019State Compliance achieved3 linked violations
January 10, 2019State Violation/Reminder Notice3 linked violations
November 6, 2018State Public Notification requested2 linked violations
November 6, 2018State Violation/Reminder Notice1 linked violation
April 23, 2018State Public Notification received5 linked violations
April 23, 2018State Compliance achieved4 linked violations
March 8, 2018State Administrative/Compliance Order with penalty issued16 linked violations
February 20, 2018State Public Notification requested33 linked violations
December 11, 2017State Violation/Reminder Notice2 linked violations
December 11, 2017State Public Notification requested6 linked violations
November 13, 2017State Compliance achieved5 linked violations
November 7, 2017State Public Notification requested1 linked violation
November 7, 2017State Violation/Reminder Notice1 linked violation
October 30, 2017State Public Notification requested1 linked violation
October 30, 2017State Violation/Reminder Notice1 linked violation
October 2, 2017State Public Notification requested1 linked violation
October 2, 2017State Violation/Reminder Notice1 linked violation
September 11, 2017State Violation/Reminder Notice1 linked violation
September 11, 2017State Public Notification requested1 linked violation
September 11, 2017State Violation/Reminder Notice2 linked violations
August 1, 2017State Public Notification requested2 linked violations
June 8, 2017State Public Notification requested4 linked violations
May 10, 2017State Violation/Reminder Notice6 linked violations
September 19, 2016State Compliance achieved3 linked violations
August 13, 2015State Violation/Reminder Notice4 linked violations
April 24, 2015State Compliance achieved4 linked violations
November 7, 2014State Public Notification requested3 linked violations
June 25, 2012State Public Notification received8 linked violations
November 7, 2011State Public Notification requested5 linked violations
August 12, 2011State Public Notification requested4 linked violations
July 12, 2011State Public Notification received14 linked violations
June 30, 2008State Public Notification received34 linked violations
March 31, 2008State Compliance achieved10 linked violations
October 10, 2007State Public Notification requested4 linked violations
October 10, 2007State Violation/Reminder Notice4 linked violations
October 30, 1997State Public Notification requested1 linked violation
January 7, 1997State Compliance achieved1 linked violation
September 30, 1996State Public Notification requested1 linked violation
September 30, 1996State Formal Notice of Violation issued1 linked violation
January 25, 1996State Formal Notice of Violation issued4 linked violations

Contact

ARCHULETA, RAMONA

719-672-0314

SAN LUIS, CO 81152