Alameda, CA Water - Home Safety Score unavailable
2 ZIP codes · 3 water systems · Updated
Data: EPA SDWIS
Key Facts for Alameda Residents
- Average of reported 90th-percentile lead results: 0.05 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average.
- Homes built before 1986: 74% - older plumbing may contain lead solder.
- Estimated remediation: $3,080 per household.
- Health risk index (ZipCheckup composite of CDC data): 9.67.
Alameda's Water Providers
Federal records list 3 water systems tied to Alameda, CA. Of those, 3 are the primary providers, meaning service conditions, rate structures, and compliance histories can differ depending on where a property sits.
Overview
We track home safety data for 2 ZIP codes in Alameda, California (population ~76,876), covering 3 community water systems serving approximately 1,448,064 people region-wide. The EPA snapshots used for this build directly map water systems to 2 of 2 ZIP codes.
The available EPA record reports 0 violations for 2 ZIP codes with a reported violation count.
Water Sources
Alameda water systems draw from: Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0500 mg/L (exceeds EPA action level) (EPA action level: 0.015 mg/L)
- 1 of 2 ZIP codes 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 |
|---|---|---|---|
| 94501 | — | East Bay Municipal Utility District | 1,442,800 |
| 94502 | — | East Bay Municipal Utility District | 1,442,800 |
All ZIP Codes in Alameda
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.
Alameda 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
Alameda Infrastructure Age
With 74% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Renovation history matters as much as age: in Alameda, with a median build year of 1969, some older homes have been replumbed and some have not.
Over half of homes in Alameda were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Alameda
Because the median home value in Alameda is large relative to the estimated cost of remediation, the ratio between them stays at or below 1%; that is a statement about two area-level numbers, not a quote for a particular house or a judgment about what an owner can pay.
Estimated remediation costs in Alameda can be compared with local home values. The $2,020–$4,240 estimated range can be set against the median property value; actual costs vary by home. Home values are 64% above the California average.
Alameda: 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.
Test the tap in Alameda. Reported 90th-percentile lead results from water systems, averaged over its ZIP codes, exceed 15 parts per billion, and pre-1986 homes make up 74%.
1 ZIP code (50% of the city's ZIP records) is served by a water system whose 90th-percentile lead result exceeds the EPA action level of 0.015 mg/L.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Alameda: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Alameda contains 47 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $18,340. 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. The $3,080 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 Alameda, CA