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Round Mountain, CA Tap Water Quality 2026

Water quality report for Round Mountain, CA — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

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

Main Utility: Cedar Creek Mobilehome Park PWSID: CA4500063 Updated: 2026 Q2
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1 violation currently open

Lead is 13.10 ppb, 87% of the action level. PFAS has never been sampled at this system.

D

Round Mountain earns a D for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 13.10 ppb — 87% of the federal action level
PFAS never sampled at this system
2 violations since 2015, 1 health-based
1 violation currently open
Round Mountain's lead level vs. all California community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 13.10 ppb — 87% of the federal action level
✓ Lower lead than 1% of California utilities
Population Served
37
~20 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
1
1 open of 2 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
87% of EPA action level
13.10 ppb
Action level: 15 ppb
The 90th-percentile lead result is 13.10 ppb, 87% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Unaddressed
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Unaddressed
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

1 violation remains open, out of 2 recorded since 2015 (1 health-based).

About the Main Water System

Utility Cedar Creek Mobilehome Park
PWSID CA4500063
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 37
Service connections 20
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Round Mountain tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open. Lead is 13.10 ppb, 87% of the action level.
Does Round Mountain 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 Round Mountain? ▼
Cedar Creek Mobilehome Park (PWSID CA4500063). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-07-16. No significant deficiencies were recorded.

What Should Round Mountain Residents Do?

1
Consider a filter certified for lead
Look for NSF/ANSI 53 certification for lead reduction.
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
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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