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California Polytechnic State University, CA Tap Water Quality 2026

Water quality report for California Polytechnic State University, CA — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at California Polytechnic State University's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Nacimiento Water Project PWSID: CA4010080 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead has not been reported for this system and no violations are open. PFAS has never been sampled at this system.

B

California Polytechnic State University earns a B for water quality

Graded on violations alone, with state inspection findings. PFAS not tested. Lead not reported.

Lead: not reported
PFAS never sampled at this system
No violations since 2015
No violations currently open
California Polytechnic State University's lead level vs. all California community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: — 0% of the federal action level
✓ Lower lead than % of California utilities
Population Served
6151
~5 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
None on record since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Action level: 15 ppb
No lead result has been reported for this system in the current window. That is a gap in state reporting, not a finding of safety.

Contaminant Violations (2015–Present)

✓ No violations on record for this water system.
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

No violations are on record for this system since 2015. EPA records violations for every community water system, so this reflects a clean compliance history rather than missing data.

About the Main Water System

Utility Nacimiento Water Project
PWSID CA4010080
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 6,151
Service connections 5
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is California Polytechnic State University tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does California Polytechnic State University water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to California Polytechnic State University? ▼
Nacimiento Water Project (PWSID CA4010080), one of 2 systems serving this area. Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2023-09-18. No significant deficiencies were recorded.

What Should California Polytechnic State University Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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