CITY REPORT CA

Atascadero, CA Home Safety: Home Safety 67/100

2 ZIP codes · 2 water systems · Updated

ZipCheckup grade for Atascadero: C.

A mixed picture - some signals here are worth your attention.

Atascadero lands in the middle of the grade scale in CA; EPA records can differ from one service area to the next.

How Atascadero Compares

Atascadero67/100
California avg76/100
National avg73/100

Data: EPA SDWIS

2
ZIP Codes
2
Water Systems
0
ZIPs Linked to Systems with Violations
C · 67
Avg Safety Score
Zone 2
County Radon Potential (Moderate)
$692K
Median Home Value
$600
Est. Remediation (0.1% of home value)

What You Should Know About Atascadero Water

  • Estimated remediation: $600 per household.
  • Health risk index (ZipCheckup composite of CDC data): 11.26.

Who Supplies Your Water in Atascadero

Sorted by reported population served, the top 2 of 2 public water systems mapped to Atascadero, CA appear below, each with its own federal compliance record.

Overview

We track home safety data for 2 ZIP codes in Atascadero, California, covering 2 community water systems serving approximately 33,512 people. 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.

Home Safety Score

Average Home Safety Score for Atascadero: C (67/100)

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

Atascadero water systems draw from: Groundwater.

Lead & Copper

  • Average of reported 90th-percentile lead results: reported as 0 mg/L (a reported 0 is not proof of no lead; check the source record for its reporting limit) (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
93422 C Atascadero Mutual Water Company 30,618

All ZIP Codes in Atascadero

Data Sources

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

Health Outcomes in Atascadero

9.9%
Asthma (US: 9.8%)
10%
Diabetes (US: 10.4%)
16.7%
Poor Mental Health (US: 14.8%)

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

Asthma 9.9% ↑
Diabetes 10% ↓
Mental Health 16.7% ↑

Vertical line = national average. ■ Above national · ■ Below national

Cost Context: What Remediation Means for Atascadero Homeowners

Low tier for Atascadero: remediation estimated at up to 1% of what homes are worth.

Median Home Value
$692,100
Est. Remediation
$600
Remediation as % of home value 0.1%

Estimated remediation costs in Atascadero can be compared with local home values. The $400–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 6% below the California average.

Historical NFIP Claim Context in Atascadero

48
Total FEMA Flood Claims
$29,178
Avg Reported Sum With Payment Data
0%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Atascadero contains 48 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $29,178. 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 $600 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.

What You Can Do in Atascadero

  1. Test your water at home. City-level data shows averages - your tap may differ. Check the certification, price and turnaround time of any water test kit or lab service.
  2. Install a certified water filter. Choose a pitcher or under-sink filter certified to reduce the specific contaminants of concern.
  3. Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.

Frequently Asked Questions

What does the Home Safety Score mean for Atascadero, CA?
Atascadero has an average Home Safety Score of 67/100 (Grade C) under ZipCheckup model 4.0.0, an area-level model that draws on EPA water compliance records, PFAS screening, EPA radon zones, and annual EPA air quality data; see the methodology page for how inputs and coverage are handled. The available EPA record reports no violations for ZIP codes with reported counts. Check individual ZIP code reports for component details.
How does Atascadero compare to California average?
Atascadero has an average Home Safety Score of 67/100, which is below the California state average of 76/100 for the same model series.
How many water systems serve Atascadero?
Our records map 2 water systems to 2 ZIP codes in Atascadero. The related population figure in our data is approximately 33,512 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Atascadero?
Estimated remediation cost per household in Atascadero: $600; modeled range $400 to $800. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
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How to cite this page

APA ZipCheckup. (2026). Atascadero, CA Home Safety: Home Safety 67/100. https://zipcheckup.com/cities/ca/atascadero/
BibTeX
@misc{zipcheckup-cities-ca-atascadero,
  author = {{ZipCheckup}},
  title  = {{Atascadero, CA Home Safety: Home Safety 67/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ca/atascadero/}
}

Page version: October 2026.

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