Public Water System

OAKVALE PARK

PWSID CA3700962 · California · 260 people served

Good

OAKVALE PARK is an EPA-regulated public water system in California (PWSID CA3700962). It serves an estimated 260 residents — a rural community of customers — across 1 community across 1 ZIP code.

Over the past five years, OAKVALE PARK has recorded 2 EPA health-based violations. The grade of B summarizes this compliance pattern. Specific contaminants, dates, and rule citations are listed in the violation history below.

Service Area

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Centered on the averaged ZIP-code centroid of 1 ZIP served.

Population

260

Cities

ZIPs

Violations

EPA Health-Based Violations

Health-based Maximum Contaminant Level (MCL) violations on file for OAKVALE PARK over the past five years of EPA SDWIS reporting.

Uraniumradiological

EPA Code 4006 · Maximum Contaminant Level Exceedance

violations

EPA Limit

0.03 mg/L

Last Reading

38.4 PCI/L

First Reported

Jan 2024

Most Recent

Jan 2024

What this violation means

Uranium in drinking water is both a chemical toxin (kidney damage) and a radiological hazard (increased cancer risk). It's most commonly found in groundwater near uranium ore deposits or former mining activity in the Western US.

Recommended precautions

→Reverse osmosis is the gold standard for removing uranium.
→Ion exchange systems work but must be sized correctly for uranium.
→If you live near former mining sites, test for uranium even if not required.

Read the complete guide to Uranium

Source: EPA Safe Drinking Water Information System (SDWIS). Health-based violations only. Older violations may have been resolved; check your utility's most recent Consumer Confidence Report for current status.

Cities Served by OAKVALE PARK

ESCONDIDO

ZIP Codes Served

92027

About this system

EPA records this system as PWSID CA3700962. Data reflects the most recent EPA SDWIS publication as of 2026-05-18. Public Water System Identifiers (PWSIDs) are assigned by the EPA's Safe Drinking Water Act program to track every regulated water utility in the United States. The first two letters typically indicate the state primacy agency. For real-time water quality information, contact OAKVALE PARK directly or review their annual Consumer Confidence Report (CCR).