Public water system record
City of Alamosa
Serves Alamosa, Alamosa County, CO · 11,271 people served
Federal records show no health-based violations and no monitoring or reporting issues for City of Alamosa 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
- 0
Key facts
- City of Alamosa draws water from 7 wells.
- Most recent formal enforcement: signed compliance agreement by Colorado, February 2005.
- Record on file since 1995, with 22 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 1,686 unknown out of 3,463 service lines.
Check whether City of Alamosa 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, and no monitoring or reporting violations either.
Full record since 1995
EPA's records for City of Alamosa go back to 1995. Before October 19, 2016 they list 22 health-based violations (22 resolved) and 197 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 2 |
| 2000s | 22 | 195 |
Most recent health-based violation before October 19, 2016: Arsenic, began April 2008, Resolved.
Show all 22 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.022 mg/L, federal limit 0.01 mg/L (2.2 times the limit)
|
Apr 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.027 mg/L, federal limit 0.01 mg/L (2.7 times the limit)
|
Apr 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.088 mg/L, federal limit 0.01 mg/L (8.8 times the limit)
|
Apr 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.062 mg/L, federal limit 0.01 mg/L (6.2 times the limit)
|
Apr 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.057 mg/L, federal limit 0.01 mg/L (5.7 times the limit)
|
Apr 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.03 mg/L, federal limit 0.01 mg/L (3 times the limit)
|
Apr 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.022 mg/L, federal limit 0.01 mg/L (2.2 times the limit)
|
Jan 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.026 mg/L, federal limit 0.01 mg/L (2.6 times the limit)
|
Jan 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.01 mg/L (8.4 times the limit)
|
Jan 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.065 mg/L, federal limit 0.01 mg/L (6.5 times the limit)
|
Jan 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.056 mg/L, federal limit 0.01 mg/L (5.6 times the limit)
|
Jan 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.029 mg/L, federal limit 0.01 mg/L (2.9 times the limit)
|
Jan 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.01 mg/L (8.1 times the limit)
|
Oct 1, 2007 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.072 mg/L, federal limit 0.01 mg/L (7.2 times the limit)
|
Jul 1, 2007 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.074 mg/L, federal limit 0.01 mg/L (7.4 times the limit)
|
Apr 1, 2007 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.078 mg/L, federal limit 0.01 mg/L (7.8 times the limit)
|
Jan 1, 2007 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.076 mg/L, federal limit 0.01 mg/L (7.6 times the limit)
|
Oct 1, 2006 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.089 mg/L, federal limit 0.01 mg/L (8.9 times the limit)
|
Jul 1, 2006 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.01 mg/L (8.4 times the limit)
|
Apr 1, 2006 | Resolved |
|
Arsenic
Contaminant limit exceeded
|
Jan 1, 2006 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2002 | Resolved |
|
Arsenic
Contaminant limit exceeded
|
Apr 1, 2000 | Resolved |
Enforcement actions
Colorado regulators took 1 formal enforcement action against City of Alamosa in 2005. The most recent was a signed compliance agreement in February 2005.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 9, 2005 | Colorado | Signed compliance agreement | 21 violations (21 health-based): Arsenic |
Where the water comes from
City of Alamosa draws water from 7 wells. 1 other community water system buys water from City of Alamosa.
Community systems that buy water from it
- East Alamosa Alamosa, CO
Annual water quality report
City of Alamosa 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.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
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