F0/100
MCFARLAND, CITY OF — Water Quality Report 2026
Serving 14,161 people · California
Water Source
Groundwater
County
—
System ID
CA1510013
Violations
89
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 1200.00 µg/L | — | Above Goal |
vanadium | 48.00 µg/L | — | Above Goal |
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
1
Health-Related
TIER 1 — URGENTUnresolved
Exceeded the Maximum Contaminant Level (single sample)
TIER 3Resolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2021Rule: Ground Water RuleEnforcement: Formal — state order issued
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About MCFARLAND, CITY OF
Is MCFARLAND, CITY OF water safe to drink?
MCFARLAND, CITY OF water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 89 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has MCFARLAND, CITY OF detected?
66 contaminants were tested in MCFARLAND, CITY OF's water. Notable contaminants include chlorate, vanadium. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does MCFARLAND, CITY OF have any EPA violations?
Yes, MCFARLAND, CITY OF has 89 EPA violation(s) on record, with the most recent in 2023. Violation types include MCL, MR, MON. 37 are health-based violations.
How many people does MCFARLAND, CITY OF serve?
MCFARLAND, CITY OF serves approximately 14,161 people, California. The system provides water to 1 community: Mcfarland.
What type of water does MCFARLAND, CITY OF provide?
MCFARLAND, CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA1510013.
How does MCFARLAND, CITY OF compare to other utilities in California?
MCFARLAND, CITY OF scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our California state page for a full comparison of water systems.