C47/100
MIL POTRERO MWC — Water Quality Report 2026
Serving 2,200 people · California
Water Source
Groundwater
County
—
System ID
CA1510028
Violations
14
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.011 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2012.
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 MIL POTRERO MWC
Is MIL POTRERO MWC water safe to drink?
MIL POTRERO MWC water receives a grade of C (47/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 14 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has MIL POTRERO MWC detected?
1 contaminants were tested in MIL POTRERO MWC's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does MIL POTRERO MWC have any EPA violations?
Yes, MIL POTRERO MWC has 14 EPA violation(s) on record, with the most recent in 2012. Violation types include MCL, MR. 9 are health-based violations.
How many people does MIL POTRERO MWC serve?
MIL POTRERO MWC serves approximately 2,200 people, California.
What type of water does MIL POTRERO MWC provide?
MIL POTRERO MWC sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA1510028.
How does MIL POTRERO MWC compare to other utilities in California?
MIL POTRERO MWC scores 47/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our California state page for a full comparison of water systems.