SAN LUIS, CO · Costilla County
COSTILLA COUNTY WS 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)
- CO0112300
- System type
- Community Water System
- Population served
- 561
- Service connections
- 396
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Monitoring, Regular
—Combined Radium (-226 and -228)
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—DICHLOROMETHANE
April 1, 2016 – June 30, 2016
ResolvedMonitoring, Regular
—Vinyl chloride
April 1, 2016 – June 30, 2016
ResolvedMonitoring, Regular
—1,1-Dichloroethylene
April 1, 2016 – June 30, 2016
ResolvedMonitoring, Regular
—1,2-Dichloroethane
April 1, 2016 – June 30, 2016
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
April 1, 2016 – June 30, 2016
ResolvedMonitoring, Regular
—Carbon tetrachloride
April 1, 2016 – June 30, 2016
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
April 1, 2016 – June 30, 2016
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
April 1, 2016 – June 30, 2016
ResolvedMonitoring, Regular
—Benzene
January 1, 1991 – March 31, 1991
ArchivedMonitoring, Regular
—Carbon tetrachloride
January 1, 1991 – March 31, 1991
ArchivedMonitoring, Regular
—p-Dichlorobenzene
January 1, 1991 – March 31, 1991
ArchivedMonitoring, Regular
—1,2-Dichloroethane
January 1, 1991 – March 31, 1991
ArchivedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 1991 – March 31, 1991
ArchivedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 1991 – March 31, 1991
Archived
Resolved 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 1, 2016 – December 31, 2016 | Monitoring, Regular | Combined Radium (-226 and -228) | — | Resolved |
| April 1, 2016 – June 30, 2016 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| April 1, 2016 – June 30, 2016 | Monitoring, Regular | Vinyl chloride | — | Resolved |
| April 1, 2016 – June 30, 2016 | Monitoring, Regular | 1,1-Dichloroethylene | — | Resolved |
| April 1, 2016 – June 30, 2016 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| April 1, 2016 – June 30, 2016 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Resolved |
| April 1, 2016 – June 30, 2016 | Monitoring, Regular | Carbon tetrachloride | — | Resolved |
| April 1, 2016 – June 30, 2016 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Resolved |
| April 1, 2016 – June 30, 2016 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| January 1, 1991 – March 31, 1991 | Monitoring, Regular | Benzene | — | Archived |
| January 1, 1991 – March 31, 1991 | Monitoring, Regular | Carbon tetrachloride | — | Archived |
| January 1, 1991 – March 31, 1991 | Monitoring, Regular | p-Dichlorobenzene | — | Archived |
| January 1, 1991 – March 31, 1991 | Monitoring, Regular | 1,2-Dichloroethane | — | Archived |
| January 1, 1991 – March 31, 1991 | Monitoring, Regular | 1,1-Dichloroethylene | — | Archived |
| January 1, 1991 – March 31, 1991 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- August 9, 2023State Compliance achieved2 linked violations
- November 2, 2022State Public Notification requested23 linked violations
- January 20, 2021State Compliance achieved22 linked violations
- January 20, 2021State Public Notification requested1 linked violation
- November 13, 2017State Compliance achieved2 linked violations
- November 13, 2017State Compliance achieved2 linked violations
- February 10, 2017State Violation/Reminder Notice3 linked violations
- February 10, 2017State Violation/Reminder Notice2 linked violations
- September 16, 2016State Compliance achieved21 linked violations
- July 15, 2016State Violation/Reminder Notice23 linked violations
- May 6, 2016State Violation/Reminder Notice2 linked violations
- April 4, 2008State Compliance achieved6 linked violations
- February 29, 2000State Formal Notice of Violation issued4 linked violations
- April 22, 1996State Intentional no-action1 linked violation
- March 20, 1996State Formal Notice of Violation issued3 linked violations
- March 6, 1995State Public Notification requested1 linked violation
- March 6, 1995State Intentional no-action1 linked violation
- June 26, 1991State Formal Notice of Violation issued7 linked violations
Contact
MARTINEZ, SHANTAE
719-672-4100
SAN LUIS, CO 81152