Berkeley, CA Home Safety: Home Safety Score unavailable
11 ZIP codes · 1 water system · Updated
Data: EPA SDWIS
Berkeley Water: The Quick Version
- Homes built before 1986: 83% - older plumbing may contain lead solder.
- Estimated remediation: $1,736 per household.
- CDC health risk index: 9.77.
Water Systems Serving Berkeley
While 1 water system appear in federal records for Berkeley, CA, one provider supplies the majority of residential connections - making it the central point of infrastructure and compliance accountability for most households.
Overview
We track home safety data for 11 ZIP codes in Berkeley, California (population ~127,190), covering 1 community water system serving approximately 1,442,800 people region-wide. The EPA snapshots used for this build directly map water systems to 9 of 11 ZIP codes.
The available EPA record reports 0 violations for 9 ZIP codes with a reported violation count.
Water Sources
Berkeley water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0000 mg/L (EPA action level: 0.015 mg/L)
- 0 of 9 ZIP codes with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 11 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 94702 | — | East Bay Municipal Utility District | 1,442,800 |
| 94703 | — | East Bay Municipal Utility District | 1,442,800 |
| 94704 | — | East Bay Municipal Utility District | 1,442,800 |
| 94705 | — | East Bay Municipal Utility District | 1,442,800 |
| 94707 | — | East Bay Municipal Utility District | 1,442,800 |
| 94708 | — | East Bay Municipal Utility District | 1,442,800 |
| 94709 | — | East Bay Municipal Utility District | 1,442,800 |
| 94710 | — | East Bay Municipal Utility District | 1,442,800 |
| 94720 | — | East Bay Municipal Utility District | 1,442,800 |
All ZIP Codes in Berkeley
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.
CDC Health Data for Berkeley
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
How Old Is Berkeley's Housing Stock?
With 83% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Plumbing risk in older housing is defined by two eras: the pre-1970 period when lead pipes were commonly used for service lines, and the 1970-to-1986 period when lead solder remained standard in copper plumbing until the federal ban. Berkeley's median build year of 1942 lands in a range where both eras are heavily represented in the housing stock. That creates an elevated aggregate environment for plumbing-related lead exposure - one that city-level water quality averages don't capture, because the risk sits inside individual properties rather than in the distribution system.
Over half of homes in Berkeley were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Berkeley: Remediation Cost in Perspective
At current valuations, Berkeley sits in the low remediation-share tier - the equity impact of fixing documented issues is proportionally minor.
Remediation costs in Berkeley are relatively low compared to home values. The $864–$2,827 estimated range is a small fraction of median property value. Home values are 72% above the California average.
Protecting Children from Lead in Berkeley
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Older interior plumbing shapes the local picture: 83% of Berkeley homes predate the federal solder ban, and aggregate sampling either approaches or crosses the action benchmark. That mix makes a single-home draw a standard pre-purchase or pre-occupancy step.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical Flood-Claim Evidence for Berkeley
Historical NFIP data for Berkeley contains 44 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $5,084. Among ZIP codes with claim records, 0% 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. The <strong>$1,736</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
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 Berkeley, CA