Public water system record
City of Turlock
Serves Turlock, Stanislaus County, CA · 72,682 people served
Federal records show 1 health-based violation and no monitoring/reporting issues for City of Turlock in the last ten years. The most serious issue in this window was a resolved Nitrate violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 0
Key facts
- City of Turlock draws water from 15 wells.
- Highest measured level in the last 10 years: Nitrate, 11.6 mg/L, federal limit 10 mg/L (1.2 times the limit), 2017.
- Most recent formal enforcement: compliance order (no penalty) by California, January 2017.
- Record on file since 1993, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 20,439 service lines.
Check whether City of Turlock 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 |
|---|---|---|---|---|
|
Nitrate
Contaminant limit exceeded
Measured 11.6 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
330 | Jan 1, 2017 | Resolved | Yes |
Full record since 1993
EPA's records for City of Turlock go back to 1993. Before October 19, 2016 they list 6 health-based violations (6 resolved) and 2 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 1 |
| 2000s | 1 | 1 |
| 2010 to October 18, 2016 | 3 | 0 |
| October 19, 2016 to 2019 | 1 | 0 |
Most recent health-based violation before October 19, 2016: Arsenic, began April 2011, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.0111 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Apr 1, 2011 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jan 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1993 | Resolved |
Enforcement actions
California regulators took 4 formal enforcement actions against City of Turlock between 2009 and 2017. The most recent was a compliance order (no penalty) in January 2017.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jan 27, 2017 | California | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate |
| Feb 16, 2011 | California | Compliance order (no penalty) | 2 violations (2 health-based): Arsenic |
| Jun 14, 2010 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| Mar 3, 2009 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
What the violations mean
Nitrate
1 incidentNitrate exceeded the federal limit
High nitrate is especially dangerous for infants under 6 months and can cause blue baby syndrome
Where the water comes from
City of Turlock draws water from 15 wells. It also buys water from Stanislaus Regional Water Authority. 2 other community water systems buy water from City of Turlock.
Buys water from
- Stanislaus Regional Water Authority Turlock, CA
Community systems that buy water from it
- City of Modesto - Central Turlock Modesto, CA
- City of Modesto - South Turlock Modesto, CA
Annual water quality report
City of Turlock 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 California.
Certified drinking water labs by state EPA guidance for private wells