CITY REPORT ME

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

1 ZIP code · 2 water systems · Updated

Data: EPA SDWIS

1
ZIP Codes
2
Water Systems
0
ZIPs with Violations
Zone 1
Radon Risk (High)
$244K
Median Home Value
$1,200
Est. Remediation (0.5% of home value)

Cornish Water: The Quick Version

  • Average lead level: 0.0014 mg/L.
  • Homes built before 1986: 61% - older plumbing may contain lead solder.
  • Estimated remediation: $1,200 per household.
  • CDC health risk index: 13.18 - above typical levels.

Water Systems Serving Cornish

2 water systems are tracked federally in Cornish, ME. The top 2 providers collectively serve most residential addresses, but because they operate independently, infrastructure maintenance standards and compliance histories differ from one service zone to another.

Overview

We track home safety data for 1 ZIP code in Cornish, Maine, covering 2 community water systems serving approximately 1,948 people. 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.

Water Sources

Cornish water systems draw from: Groundwater.

Lead & Copper

  • Average lead level (90th percentile): 0.0014 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)

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

Areas with No Violations

ZIP Code Safety Score System Population
04020 Maine Water Company Kezar Falls Division 1,115

All ZIP Codes in Cornish

Data Sources

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

CDC Health Data for Cornish

12.7%
Asthma (US: 9.8%)
10.4%
Diabetes (US: 10.4%)
16.9%
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 12.7% ↑
Diabetes 10.4% ↓
Mental Health 16.9% ↑

Vertical line = national average. Above national · Below national

How Old Is Cornish's Housing Stock?

1975
Median Build Year
61%
Built Before 1986
39%
Built Before 1970
Copper
Likely Pipe Material

With 61% 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

Reading the housing age data for Cornish - median build year 1975 - the overriding implication is that the plumbing materials inside a typical home here reflect pre-1986 construction standards. In practical terms, that means lead-soldered copper joints are common across much of the housing stock. Where those materials are present, water can leach lead as it moves through joints - a pathway that corrosion control treatment under federal rules is designed to reduce, though it cannot eliminate lead risk where the plumbing materials themselves contain lead.

1975
Median Year Built
61%
Pre-1986 (Lead Paint Risk)
39%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (39%) 1970–1986 (22%) Post-1986 (39%)

Over half of homes in Cornish 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.

Cornish: Remediation Cost in Perspective

Remediation costs in Cornish are small relative to typical property values - the cost-to-value ratio here is favorable.

Median Home Value
$244,300
Est. Remediation
$1,200
Remediation as % of home value 0.5%

Remediation costs in Cornish are relatively low compared to home values. The $800–$1,500 estimated range is a small fraction of median property value. Home values are 6% below the Maine average.

Protecting Children from Lead in Cornish

61%
Homes Built Before 1986
0.0014
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.

Pulling a tap sample fills the gap that utility data cannot close, particularly here where 61% of housing dates from the pre-rule era and citywide monitoring sits at or above the regulatory mark in Cornish.

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

Frequently Asked Questions

Does Cornish water have lead?
The average 90th-percentile lead level in Cornish is 0.0014 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 many water systems serve Cornish?
Cornish is served by 2 public water systems across 1 ZIP code, serving approximately 1,948 people.
How much does it cost to fix water issues in Cornish?
Estimated remediation costs in Cornish average $1,200 per household, ranging from $800 to $1,500. Costs include filtration, pipe replacement, radon mitigation, and flood protection.
HomeCitiesMaine → Cornish, ME

How to cite this page

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

Page version: August 2026.

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