Public water system record
City of San Angelo
Serves San Angelo, Tom Green County, TX · 105,229 people served
Federal records show 2 health-based violations and 3 monitoring/reporting issues for City of San Angelo in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 3
Key facts
- City of San Angelo draws water from 20 wells and 5 surface water intakes (3 of them for emergency, seasonal or other part-time use).
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit), 2024.
- Record on file since 1984, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 70 lead and 26,217 unknown out of 36,388 service lines.
Check whether City of San Angelo 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Oct 1, 2024 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Jul 1, 2024 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Active |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2024 | Resolved |
|
Public Notice
OTHER
|
Sep 22, 2024 | Resolved |
Full record since 1984
EPA's records for City of San Angelo go back to 1984. Before October 19, 2016 they list 3 health-based violations (1 resolved, 2 archived by EPA without a recorded fix) and 2 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 2 | 0 |
| 2000s | 0 | 2 |
| 2010 to October 18, 2016 | 1 | 0 |
| 2020s | 2 | 3 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began July 2012, Resolved.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.096 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
Jul 1, 2012 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jun 11, 1985 | Archived |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Oct 23, 1984 | Archived |
What the violations mean
Total Trihalomethanes (TTHMs)
2 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Where the water comes from
City of San Angelo draws water from 20 wells and 5 surface water intakes (3 of them for emergency, seasonal or other part-time use). It also buys water from Colorado River Municipal Water District. 6 other community water systems and 2 smaller public systems such as schools, businesses or campgrounds buy water from City of San Angelo. 2 other public water systems have emergency connections to City of San Angelo.
Buys water from
- Colorado River Municipal Water District Big Spring, TX
Community systems that buy water from it
- City of Miles Miles, TX
- Concho Rural Water Grape Creek San Angelo, TX
- Concho Rural Water Pecan Creek San Angelo, TX
- Goodfellow Air Force Base Goodfellow AFB, TX
- Red Creek MUD San Angelo, TX
- Twin Buttes Water System San Angelo, TX
Annual water quality report
City of San Angelo 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 Texas.
Certified drinking water labs by state EPA guidance for private wells