South San Francisco, CA - Home Safety Score unavailable
2 ZIP codes · 5 water systems · Updated
Data: EPA SDWIS
Key Facts for South San Francisco Residents
- Average of reported 90th-percentile lead results: 0.0041 mg/L.
- Health risk index (ZipCheckup composite of CDC data): 9.58.
South San Francisco's Water Providers
The 3 largest of 5 systems connected with South San Francisco, CA are listed below.
Overview
We track home safety data for 2 ZIP codes in South San Francisco, California (population ~65,036), covering 5 community water systems serving approximately 228,566 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 2 ZIP codes.
The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.
Water Sources
South San Francisco water systems draw from: Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0041 mg/L (EPA action level: 0.015 mg/L)
- 0 of 1 ZIP code with known status exceed the EPA lead action level
Radon Risk
2 of 2 ZIP records with known zones are in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 94080 | — | California Water Service-s San Francisco | 64,146 |
All ZIP Codes in South San Francisco
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.
South San Francisco Community Health Snapshot
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
South San Francisco: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Available area-level lead records for South San Francisco do not determine the lead level at an individual tap. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
South San Francisco: NFIP Claim Records and Water-Quality Context
Historical NFIP data for South San Francisco contains 86 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $48,415. Among ZIP codes with claim records, 100% 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.
Deep Dive Reports
Detailed analysis for South San Francisco, CA