CITY REPORT ME

Castine, ME: High Radon Potential Area - Home Safety Score unavailable

2 ZIP codes · 1 water system · Updated

Data: EPA SDWIS

2
ZIP Codes
1
Water Systems
0
ZIPs Linked to Systems with Violations
Zone 1
County Radon Potential (High)
$558K
Median Home Value

Water Systems Serving Castine

Castine, ME: one listed entry, 1 linked overall.

Overview

We track home safety data for 2 ZIP codes in Castine, Maine, covering 1 community water system serving approximately 1,222 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.

Water Sources

Castine 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

2 of 2 ZIP records with known zones are in EPA Radon Zone 1.

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
04421 — Castine Water Department 983

All ZIP Codes in Castine

Data Sources

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

CDC Health Data for Castine

12.1%
Asthma (US: 9.8%)
11.2%
Diabetes (US: 10.4%)
16.5%
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 12.1% ↑
Diabetes 11.2% ↑
Mental Health 16.5% ↑

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

Historical Flood-Claim Evidence for Castine

6
Total FEMA Flood Claims
$9,187
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Castine contains 6 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $9,187. 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.

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

How many water systems serve Castine?
Our records map 1 water system to 2 ZIP codes in Castine. The related population figure in our data is approximately 1,222 people; it is not a count of people served citywide.
Home → Cities → Maine → Castine, ME

How to cite this page

APA ZipCheckup. (2026). Castine, ME: High Radon Potential Area - Home Safety Score unavailable. https://zipcheckup.com/cities/me/castine/
BibTeX
@misc{zipcheckup-cities-me-castine,
  author = {{ZipCheckup}},
  title  = {{Castine, ME: High Radon Potential Area - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/me/castine/}
}

Page version: October 2026.

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