CITY REPORT CA HEALTH VIOLATIONS: 1

The Sea Ranch, CA: 1 Health Violation - Home Safety 95/100

1 ZIP code · 1 water system · Updated

ZipCheckup grade for The Sea Ranch: A.

Checked records flag no major concern; missing data is unknown.

Within The Sea Ranch, CA, the available records add up to an upper-tier grade; that grade describes records, not the water at a given faucet.

How The Sea Ranch Compares

The Sea Ranch95/100
California avg76/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
1
ZIPs Linked to Systems with Violations
A · 95
Avg Safety Score
Zone 3
County Radon Potential (Low)
$1.2M
Median Home Value
$800
Est. Remediation (0.1% of home value)

What You Should Know About The Sea Ranch Water

  • Your city's water systems recorded 4 violations since 2021.
  • Homes built before 1986: 49% - older plumbing may contain lead solder.
  • Estimated remediation: $800 per household.
  • Health risk index (ZipCheckup composite of CDC data): 11.32.

Who Supplies Your Water in The Sea Ranch

A single entry in the list below does not mean one utility serves all of The Sea Ranch, CA: it means one system appears there, while federal records link 1 to the area. Service areas and ZIP codes do not line up exactly, so the utility named on a household's water bill is the one whose record applies to that home.

Overview

We track home safety data for 1 ZIP code in The Sea Ranch, California, covering 1 community water system serving approximately 1,200 people. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 1 health-based violation appear in the available health breakdown.

Home Safety Score

Average Home Safety Score for The Sea Ranch: A (95/100)

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

The Sea Ranch water systems draw from: Surface water.

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

1 of 1 ZIP records with known zones is in EPA Radon Zone 3.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Lead and Copper Rule Revisions Treatment Technique 4 1
Lead and Copper Rule Treatment Technique 2 1
Revised Total Coliform Rule Microbiological 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
95497 A 4 1 Sea Ranch Water Company,the (puc)

All ZIP Codes in The Sea Ranch

  • 95497 [A] - 4 violations ⚠

Data Sources

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

Health Outcomes in The Sea Ranch

9.8%
Asthma (US: 9.8%)
10.7%
Diabetes (US: 10.4%)
15.8%
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 9.8% ↓
Diabetes 10.7% ↑
Mental Health 15.8% ↑

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

Top Contaminants in The Sea Ranch Water

Lead and Copper Rule Revisions 4 violations
Treatment Technique
Lead and Copper Rule 2 violations
Treatment Technique
Developmental delays in children, kidney damage
Revised Total Coliform Rule 2 violations
Microbiological
Indicates possible bacterial contamination

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

Housing & Infrastructure in The Sea Ranch

1983
Median Build Year
49%
Built Before 1986
6%
Built Before 1970
Copper
Likely Pipe Material

With 49% 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

For a household in The Sea Ranch, a certified lab test of tap water answers what the median build year of 1983 cannot.

1983
Median Year Built
49%
Pre-1986 (lead solder era; lead paint banned 1978)
6%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (6%) 1970–1986 (43%) Post-1986 (51%)

Most homes in The Sea Ranch were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.

Source: U.S. Census Bureau ACS B25034.

Cost Context: What Remediation Means for The Sea Ranch Homeowners

Relative to home values, The Sea Ranch remediation estimates run low.

Median Home Value
$1.2M
Est. Remediation
$800
Remediation as % of home value 0.1%

Estimated remediation costs in The Sea Ranch can be compared with local home values. The $450–$1,400 estimated range can be set against the median property value; actual costs vary by home. Home values are 62% above the California average.

Lead Exposure Risk for Children in The Sea Ranch

49%
Homes Built Before 1986

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.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

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

Frequently Asked Questions

What does the Home Safety Score mean for The Sea Ranch, CA?
The Sea Ranch has an average Home Safety Score of 95/100 (Grade A) 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. 4 violations appear in EPA records for water systems mapped to these ZIP codes. Check individual ZIP code reports for component details.
How many violations are on record for water systems serving The Sea Ranch?
EPA records list 4 EPA violations, including 1 health-based violation for The Sea Ranch water systems. These water-system violations are shown for 1 mapped ZIP code.
How does The Sea Ranch compare to California average?
The Sea Ranch has an average Home Safety Score of 95/100, which is at or above the California state average of 76/100 for the same model series.
How many water systems serve The Sea Ranch?
Our records map 1 water system to 1 ZIP code in The Sea Ranch. The related population figure in our data is approximately 1,200 people; it is not a count of people served citywide.
How much does it cost to fix water issues in The Sea Ranch?
Estimated remediation cost per household in The Sea Ranch: $800; modeled range $450 to $1,400. 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). The Sea Ranch, CA: 1 Health Violation - Home Safety 95/100. https://zipcheckup.com/cities/ca/the-sea-ranch/
BibTeX
@misc{zipcheckup-cities-ca-the-sea-ranch,
  author = {{ZipCheckup}},
  title  = {{The Sea Ranch, CA: 1 Health Violation - Home Safety 95/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ca/the-sea-ranch/}
}

Page version: October 2026.

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