CITY REPORT ME

Castine, ME: High Radon Risk - Home Safety Score unavailable

2 ZIP codes · 1 water system · Updated

Data: EPA SDWIS

2
ZIP Codes
1
Water Systems
0
ZIPs with Violations
Zone 1
Radon Risk (High)
$558K
Median Home Value
$2,100
Est. Remediation (0.4% of home value)

Castine Water: The Quick Version

  • Estimated remediation: $2,100 per household.
  • CDC health risk index: 13.24 - above typical levels.

Water Systems Serving Castine

The structure of water supply in Castine, ME is straightforward: one utility provides the bulk of residential service among 1 tracked system, concentrating rate-setting and infrastructure decisions under a single organization.

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 lead level (90th percentile): 0.0000 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 1 (High Risk)

  • Zone 1 (High): 2 ZIP codes
  • Zone 2 (Moderate): 0 ZIP codes
  • Zone 3 (Low): 0 ZIP codes

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

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). Water contamination can correlate with respiratory and chronic health conditions.

Compared to National Average

Asthma 12.1% ↑
Diabetes 11.2% ↑
Mental Health 16.5% ↑

Vertical line = national average. Above national · Below national

Castine: Remediation Cost in Perspective

In Castine, property wealth outpaces what documented remediation typically demands - the equity burden lands well within the low tier.

Median Home Value
$557,700
Est. Remediation
$2,100
Remediation as % of home value 0.4%

Remediation costs in Castine are relatively low compared to home values. The $1,350–$3,000 estimated range is a small fraction of median property value. Home values are 114% above the Maine average.

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. The <strong>$2,100</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

How many water systems serve Castine?
Castine is served by 1 public water system across 2 ZIP codes, serving approximately 1,222 people.
How much does it cost to fix water issues in Castine?
Estimated remediation costs in Castine average $2,100 per household, ranging from $1,350 to $3,000. Costs include filtration, pipe replacement, radon mitigation, and flood protection.
HomeCitiesMaine → Castine, ME

How to cite this page

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

Page version: August 2026.

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