Public water system record
City of Sonora
Serves Sonora, Sutton County, TX · 2,766 people served
Federal records show 1 health-based violation and 12 monitoring/reporting issues for City of Sonora in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 12
Key facts
- City of Sonora draws water from 8 wells (3 of them for emergency, seasonal or other part-time use).
- Most recent formal enforcement: compliance order with a penalty by Texas, August 2004.
- Record on file since 2002, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 1,374 unknown out of 1,454 service lines.
Check whether City of Sonora 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 |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 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 |
|
Public Notice
OTHER
|
May 15, 2025 | Resolved |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Resolved |
|
Public Notice
OTHER
|
Dec 19, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2020 | Active |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Public Notice
OTHER
|
Jan 12, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2018 | Resolved |
|
E. coli
Monitoring and reporting
|
Dec 1, 2015 | Resolved |
|
E. coli
Monitoring and reporting
|
Oct 1, 2015 | Resolved |
Full record since 2002
EPA's records for City of Sonora go back to 2002. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 11 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 1 | 1 |
| 2010 to October 18, 2016 | 0 | 10 |
| October 19, 2016 to 2019 | 0 | 2 |
| 2020s | 1 | 8 |
Most recent health-based violation before October 19, 2016: Total Coliform, began November 2002, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2002 | Resolved |
Enforcement actions
Texas regulators took 1 formal enforcement action against City of Sonora in 2004. The most recent was a compliance order with a penalty in August 2004.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Aug 13, 2004 | Texas | Compliance order with a penalty | 2 violations (1 health-based): Total Coliform, Public Notice |
What the violations mean
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
City of Sonora draws water from 8 wells (3 of them for emergency, seasonal or other part-time use).
Annual water quality report
City of Sonora 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 Texas.
Certified drinking water labs by state EPA guidance for private wells