Public water system record
Costilla County WS
Serves an area of Costilla County, CO · 561 people served
Federal records show no health-based violations and 5 monitoring/reporting issues for Costilla County WS in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 5
Key facts
- Costilla County WS draws water from 5 wells (2 of them for emergency, seasonal or other part-time use).
- Most recent formal enforcement: compliance order (no penalty) by EPA, February 1995.
- Record on file since 1991, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 377 unknown out of 398 service lines.
Check whether Costilla County WS serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
Full record since 1991
EPA's records for Costilla County WS go back to 1991. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 38 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 10 |
| 2000s | 2 | 4 |
| 2010 to October 18, 2016 | 0 | 24 |
| 2020s | 0 | 3 |
Most recent health-based violation before October 19, 2016: Lead and Copper Rule, began July 2006, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Treatment technique failure
|
Jul 1, 2006 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2002 | Resolved |
Enforcement actions
EPA took 1 formal enforcement action against Costilla County WS in 1995. The most recent was a compliance order (no penalty) in February 1995.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 24, 1995 | EPA | Compliance order (no penalty) | 1 violation: Nitrate |
Where the water comes from
Costilla County WS draws water from 5 wells (2 of them for emergency, seasonal or other part-time use).
Annual water quality report
Costilla County WS must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Colorado.
Certified drinking water labs by state EPA guidance for private wells