CITY REPORT CA

Bayside, CA Home Safety: Home Safety 100/100

1 ZIP code · 5 water systems · Updated

ZipCheckup grade for Bayside: A.

No federal data flags a major home-safety concern for this ZIP.

Residents of Bayside generally live with tap water that beats the CA safety average on key EPA compliance metrics.

How Bayside Compares

Bayside100/100
California avg76/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
5
Water Systems
0
ZIPs with Violations
A · 100
Avg Safety Score
Zone 3
Radon Risk (Low)
$585K
Median Home Value
$1,200
Est. Remediation (0.2% of home value)

Bayside Water: The Quick Version

  • Average lead level: 0.0036 mg/L.
  • Homes built before 1986: 84% - older plumbing may contain lead solder.
  • Estimated remediation: $1,200 per household.
  • CDC health risk index: 12.81 - above typical levels.

Water Systems Serving Bayside

Structurally, Bayside, CA's water supply is divided. Federal data identifies 5 water systems in the area, with 3 providers serving the bulk of residential connections. These utilities operate independently, meaning rate-setting authority and EPA compliance accountability are distributed rather than centralized.

Overview

We track home safety data for 1 ZIP code in Bayside, California (population ~1,770), covering 5 community water systems serving approximately 69,364 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.

Home Safety Score

Average Home Safety Score for Bayside: A (100/100)

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

Bayside water systems draw from: Groundwater.

Lead & Copper

  • Average lead level (90th percentile): 0.0036 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 3 (Low Risk)

Areas with No Violations

ZIP Code Safety Score System Population
95524 A Humboldt Bay Mwd 680

All ZIP Codes in Bayside

Data Sources

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

CDC Health Data for Bayside

11%
Asthma (US: 9.8%)
11.4%
Diabetes (US: 10.4%)
19.7%
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 11% ↑
Diabetes 11.4% ↑
Mental Health 19.7% ↑

Vertical line = national average. Above national · Below national

How Old Is Bayside's Housing Stock?

1966
Median Build Year
84%
Built Before 1986
43%
Built Before 1970
Galvanized Steel or Copper
Likely Pipe Material

With 84% 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

Lead solder was standard in copper plumbing until federally banned in 1986; lead pipes were common in service lines pre-1970. Bayside's median build year of 1966 reflects a housing stock where these older materials are a pervasive feature - not a rare legacy - of the residential plumbing landscape.

1966
Median Year Built
84%
Pre-1986 (Lead Paint Risk)
43%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (43%) 1970–1986 (41%) Post-1986 (16%)

Over half of homes in Bayside 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.

Bayside: Remediation Cost in Perspective

The household financial picture for Bayside homeowners is proportionally favorable - addressing documented issues claims a small slice of equity, and the cost-to-value ratio puts this area well within the manageable tier.

Median Home Value
$585,100
Est. Remediation
$1,200
Remediation as % of home value 0.2%

Remediation costs in Bayside are relatively low compared to home values. The $800–$1,800 estimated range is a small fraction of median property value. Home values are 21% below the California average.

Protecting Children from Lead in Bayside

84%
Homes Built Before 1986
0.0036
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.

After the federal action removing lead-bearing solder from new plumbing took effect, building practice shifted - but 84% of the Bayside inventory predates that line. With aggregate samples near or beyond 0.015 mg/L, an in-home check moves out of the optional column into the standard list.

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

Historical Flood-Claim Evidence for Bayside

10
Total FEMA Flood Claims
$9,796
Avg Reported Sum With Payment Data
0%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Bayside contains 10 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $9,796. 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>$1,200</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

What does the Home Safety Score mean for Bayside, CA?
Bayside has an average Home Safety Score of 100/100 (Grade A) under model 4.0.0. The score combines EPA SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the PFAS MCL screen, EPA radon zone, and annual EPA AQI, and is published only when all required domains are observed. The available EPA record reports no violations for ZIP codes with reported counts. Check individual ZIP code reports for component details.
Does Bayside water have lead?
The average 90th-percentile lead level in Bayside is 0.0036 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 does Bayside compare to California average?
Bayside has an average Home Safety Score of 100/100, which is above the California state average of 76/100 for the same model series.
How many water systems serve Bayside?
Bayside is served by 5 public water systems across 1 ZIP code, serving approximately 1,770 people.
How much does it cost to fix water issues in Bayside?
Estimated remediation costs in Bayside average $1,200 per household, ranging from $800 to $1,800. Costs include filtration, pipe replacement, radon mitigation, and flood protection.
HomeCitiesCalifornia → Bayside, CA

How to cite this page

APA ZipCheckup. (2026). Bayside, CA Home Safety: Home Safety 100/100. https://zipcheckup.com/cities/ca/bayside/
BibTeX
@misc{zipcheckup-cities-ca-bayside,
  author = {{ZipCheckup}},
  title  = {{Bayside, CA Home Safety: Home Safety 100/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ca/bayside/}
}

Page version: August 2026.

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