CITY REPORT CA

Bethel Island, CA Home Safety: Home Safety Score unavailable

1 ZIP code · 2 water systems · Updated

Data: EPA SDWIS

1
ZIP Codes
2
Water Systems
0
ZIPs with Violations
Zone 2
Radon Risk (Moderate)
$550K
Median Home Value
$1,600
Est. Remediation (0.3% of home value)

What You Should Know About Bethel Island Water

  • Average lead level: 0.0031 mg/L.
  • Homes built before 1986: 71% - older plumbing may contain lead solder.
  • Estimated remediation: $1,600 per household.
  • CDC health risk index: 10.72.

Who Supplies Your Water in Bethel Island

With 2 utilities splitting service in Bethel Island, CA, water accountability is distributed across 2 systems on the federal record.

Overview

We track home safety data for 1 ZIP code in Bethel Island, California (population ~2,144), covering 2 community water systems serving approximately 241,357 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.

Water Sources

Bethel Island water systems draw from: Surface water.

Lead & Copper

  • Average lead level (90th percentile): 0.0031 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

Dominant radon zone: Zone 2 (Moderate Risk)

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

Areas with No Violations

ZIP Code Safety Score System Population
94511 Diablo Water District 43,357

All ZIP Codes in Bethel Island

Data Sources

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

Health Outcomes in Bethel Island

9.4%
Asthma (US: 9.8%)
11.3%
Diabetes (US: 10.4%)
15.3%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.

Compared to National Average

Asthma 9.4% ↓
Diabetes 11.3% ↑
Mental Health 15.3% ↑

Vertical line = national average. Above national · Below national

Housing & Infrastructure in Bethel Island

1972
Median Build Year
71%
Built Before 1986
22%
Built Before 1970
Copper
Likely Pipe Material

With 71% 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

The median home in Bethel Island was built in 1972 - a figure that places most of the city's residential stock in the era when lead solder was still standard in copper plumbing. Homes built before 1986 may have lead-soldered joints; those built before 1970 face the additional possibility of lead pipes in the service line itself.

1972
Median Year Built
71%
Pre-1986 (Lead Paint Risk)
22%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (22%) 1970–1986 (49%) Post-1986 (29%)

Over half of homes in Bethel Island 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.

Cost Context: What Remediation Means for Bethel Island Homeowners

Equity impact data for Bethel Island lands in the favorable tier - remediation claims a small slice of what properties here are worth.

Median Home Value
$549,500
Est. Remediation
$1,600
Remediation as % of home value 0.3%

Remediation costs in Bethel Island are relatively low compared to home values. The $800–$2,600 estimated range is a small fraction of median property value. Home values are 26% below the California average.

Lead Exposure Risk for Children in Bethel Island

71%
Homes Built Before 1986
0.0031
mg/L Avg Lead (Limit: 0.015)

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.

Despite citywide averages serving as the standard public reference point, those aggregates cannot resolve what is happening at one specific faucet - and where 71% of Bethel Island homes come from before the solder rule or where utility samples sit at or above the action mark, the gap between system data and faucet reality matters more than it does in lower-exposure communities. An in-home draw closes that gap, with certified filtration through retailer networks available where confirmed faucet results warrant additional measures.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Historical NFIP Claim Context in Bethel Island

38
Total FEMA Flood Claims
$17,397
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Bethel Island contains 38 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $17,397. 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 <strong>$1,600</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.

Frequently Asked Questions

Does Bethel Island water have lead?
The average 90th-percentile lead level in Bethel Island is 0.0031 mg/L. This is below the EPA action level of 0.015 mg/L. Lead levels can vary by home - testing is recommended especially in older properties.
How many water systems serve Bethel Island?
Bethel Island is served by 2 public water systems across 1 ZIP code, serving approximately 2,144 people.
How much does it cost to fix water issues in Bethel Island?
Estimated remediation costs in Bethel Island average $1,600 per household, ranging from $800 to $2,600. Costs include filtration, pipe replacement, radon mitigation, and flood protection.
HomeCitiesCalifornia → Bethel Island, CA

How to cite this page

APA ZipCheckup. (2026). Bethel Island, CA Home Safety: Home Safety Score unavailable. https://zipcheckup.com/cities/ca/bethel-island/
BibTeX
@misc{zipcheckup-cities-ca-bethel-island,
  author = {{ZipCheckup}},
  title  = {{Bethel Island, CA Home Safety: Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ca/bethel-island/}
}

Page version: August 2026.

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