Public water system · CO0112900
ActiveSan Luis Wsd
Community water system in Costilla County, Colorado, drawing primarily on groundwater.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
629
Service connections
414
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
Violations & enforcement
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2022-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2021-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2012-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2001-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 7 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
San Luis Wsd: frequently asked questions
Is San Luis Wsd's water safe to drink?
San Luis Wsd is an active community water system regulated under the Safe Drinking Water Act, overseen by the CO state drinking water program. EPA's SDWA data records violations for this system — the most recent are listed on this page, including health-based violations; consult EPA ECHO or your annual Consumer Confidence Report for its current compliance status.
Who runs San Luis Wsd?
San Luis Wsd (PWSID CO0112900) is a local government-owned community water system, regulated by the CO state drinking water program.
How many people does San Luis Wsd serve?
San Luis Wsd reports serving 629 people through 414 service connections in Costilla County, Colorado.
Where does San Luis Wsd get its water?
EPA SDWIS lists this system's primary water source as groundwater.
Other water systems in Costilla County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Costilla County Ws | Costilla | 561 | Community | Groundwater |
| Ft Garland Wsd | Costilla | 477 | Community | Groundwater |
| Blanca Town of | Costilla | 469 | Community | Groundwater |
| Sierra Grande School District | Costilla | 304 | Non-transient non-community | Groundwater |
| Blanca Ft Garland Md | Costilla | 108 | Transient non-community | Groundwater |
| Garcia Domestic Wua | Costilla | 100 | Community | Groundwater |
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.