OTAY WATER DISTRICT

SPRING VALLEY, CA · ~238,008 people served

Check your exact address → SPRING VALLEY overview

100

Excellent

PurityRadar safety score

PWSID

CA3710034

State

California

City

SPRING VALLEY

Population served

238,008

Primary source

SWP

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Apr 2024). Levels in parts per trillion (ppt).

Lithium

16,200 ppt

limit —

No federal limit

Violations & enforcement

No violations are on record for this system in EPA’s SDWIS/ECHO data.

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Copper

1 station · latest Mar 2022

0.0075 · max 0.008 mg/L · 2

Lead

1 station · latest Mar 2022

0.0025 · max 0.003 mg/L · 2

Manganese

1 station · latest Mar 2022

0.012 · max 0.013 mg/L · 2

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system CA3710034 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.