D39/100
CALIF STATE POLYTECHNICAL UNIV - POMONA — Water Quality Report 2026
Serving 29,854 people · California
Water Source
Surface Water
County
—
System ID
CA1910022
Violations
27
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.40 mg/L | 1.30 mg/L | Over Limit |
chlorate | 440.00 µg/L | — | Above Goal |
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
3
Violations (last 5yr)
2
Unresolved
2
Health-Related
TIER 3Unresolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
TIER 2Unresolved
Treatment technique violation
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: July 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: 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 CALIF STATE POLYTECHNICAL UNIV - POMONA
Is CALIF STATE POLYTECHNICAL UNIV - POMONA water safe to drink?
CALIF STATE POLYTECHNICAL UNIV - POMONA water receives a grade of D (39/100), which is considered poor. 1 contaminant(s) exceed EPA legal limits and 27 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CALIF STATE POLYTECHNICAL UNIV - POMONA detected?
46 contaminants were tested in CALIF STATE POLYTECHNICAL UNIV - POMONA's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile), chlorate. 1 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does CALIF STATE POLYTECHNICAL UNIV - POMONA have any EPA violations?
Yes, CALIF STATE POLYTECHNICAL UNIV - POMONA has 27 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, TT, MCL. 5 are health-based violations.
How many people does CALIF STATE POLYTECHNICAL UNIV - POMONA serve?
CALIF STATE POLYTECHNICAL UNIV - POMONA serves approximately 29,854 people, California.
What type of water does CALIF STATE POLYTECHNICAL UNIV - POMONA provide?
CALIF STATE POLYTECHNICAL UNIV - POMONA sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CA1910022.
How does CALIF STATE POLYTECHNICAL UNIV - POMONA compare to other utilities in California?
CALIF STATE POLYTECHNICAL UNIV - POMONA scores 39/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our California state page for a full comparison of water systems.