Tap water system records for Spring Valley, CA support a high grade on this site; review your own system's entries for specifics.

Data: EPA SDWIS

Overview

We track home safety data for 4 ZIP codes in Spring Valley, California (population ~73,468), covering 4 community water systems serving approximately 2,092,337 people region-wide. The EPA snapshots used for this build directly map water systems to 2 of 4 ZIP codes.

The available EPA record reports 0 violations for 2 ZIP codes with a reported violation count.

Home Safety Score

Average Home Safety Score for Spring Valley: A (92/100)

Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:

Factor	What It Measures
Water Quality	EPA violations and compliance history
PFAS MCL Screen	UCMR 5 testing against the covered federal MCLs
Radon Risk	EPA radon zone classification
Annual AQI	EPA AirData county-year median with at least 90 observed days

Water Sources

Spring Valley water systems draw from: Surface water.

Lead & Copper

• Average of reported 90th-percentile lead results: reported as 0 mg/L (a reported 0 is not proof of no lead; check the source record for its reporting limit) (EPA action level: 0.015 mg/L)
• 0 of 2 ZIP codes with known status exceed the EPA lead action level

Radon Risk

4 of 4 ZIP records with known zones are in EPA Radon Zone 3.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Areas with No Violations

All ZIP Codes in Spring Valley

• 91976
• 91977 [A]
• 91978 [A]
• 91979

Data Sources

• Water quality: EPA Safe Drinking Water Information System (SDWIS)
• Lead/copper: EPA Lead and Copper Rule sampling data
• Radon: EPA Map of Radon Zones

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Spring Valley: NFIP Claim Records and Water-Quality Context

90

Total FEMA Flood Claims

$18,522

Avg Reported Sum With Payment Data

33%

A/V Share of Claim-Record ZIPs

Historical NFIP data for Spring Valley contains 90 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $18,522. Among ZIP codes with claim records, 33% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.