CITY REPORT MA

South Hamilton, MA: High Radon Potential Area - Home Safety 50/100

1 ZIP code · 1 water system · Updated

ZipCheckup grade for South Hamilton: D.

Federal records show several conditions worth reviewing.

The composite Home Safety grade for South Hamilton, MA lands at the lower end of the scale; it summarizes data for the area and is not a reading from any home's tap.

How South Hamilton Compares

South Hamilton50/100
Massachusetts avg70/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
0
ZIPs Linked to Systems with Violations
D · 50
Avg Safety Score
Zone 1
County Radon Potential (High)
$689K
Median Home Value
$600
Est. Remediation (0.1% of home value)

Key Facts for South Hamilton Residents

  • Average of reported 90th-percentile lead results: 0.0027 mg/L.
  • Homes built before 1986: 86% - older plumbing may contain lead solder.
  • Estimated remediation: $600 per household.
  • Health risk index (ZipCheckup composite of CDC data): 11.73.

South Hamilton's Water Providers

Federal drinking water data connect ZIP codes in South Hamilton, MA to a count of 1 system, and the list on this page shows one of them. A listing reflects that link, not proof of which system serves a given street.

Overview

We track home safety data for 1 ZIP code in South Hamilton, Massachusetts, covering 1 community water system serving approximately 7,646 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.

Home Safety Score

Average Home Safety Score for South Hamilton: D (50/100)

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

South Hamilton water systems draw from: Groundwater.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0027 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

1 of 1 ZIP records with known zones is 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
01982 D Hamilton Water Department 7,674

All ZIP Codes in South Hamilton

Data Sources

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

South Hamilton Community Health Snapshot

11.5%
Asthma (US: 9.8%)
10.3%
Diabetes (US: 10.4%)
15.3%
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 11.5% ↑
Diabetes 10.3% ↓
Mental Health 15.3% ↑

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

South Hamilton Infrastructure Age

1953
Median Build Year
86%
Built Before 1986
70%
Built Before 1970
Galvanized Steel or Copper
Likely Pipe Material

With 86% 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

By Census estimates, roughly half or more of the homes in South Hamilton were built before 1986; the median build year is 1953.

1953
Median Year Built
86%
Pre-1986 (lead solder era; lead paint banned 1978)
70%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (70%) 1970–1986 (16%) Post-1986 (14%)

Over half of homes in South Hamilton were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.

Source: U.S. Census Bureau ACS B25034.

How Remediation Costs Compare in South Hamilton

Here the gap between local home values and the estimated repair bill is wide, so the percentage shown below for South Hamilton stays at or under the 1% mark.

Median Home Value
$688,500
Est. Remediation
$600
Remediation as % of home value 0.1%

Estimated remediation costs in South Hamilton 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 22% above the Massachusetts average.

South Hamilton: Lead Risk & Vulnerable Populations

86%
Homes Built Before 1986
0.0027
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

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.

South Hamilton: NFIP Claim Records and Water-Quality Context

14
Total FEMA Flood Claims
$11,085
Avg Reported Sum With Payment Data
0%
A/V Share of Claim-Record ZIPs

Historical NFIP data for South Hamilton contains 14 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $11,085. 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 South Hamilton

  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. With 86% of homes built before 1986, lead solder is a real possibility.
  4. Review your water system's CCR. If you use a community water system, request its annual Consumer Confidence Report for system-level test results or find it online.

Deep Dive Reports

Detailed analysis for South Hamilton, MA

Frequently Asked Questions

What does the Home Safety Score mean for South Hamilton, MA?
South Hamilton has an average Home Safety Score of 50/100 (Grade D) 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.
Does South Hamilton water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of South Hamilton is 0.0027 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How does South Hamilton compare to Massachusetts average?
South Hamilton has an average Home Safety Score of 50/100, which is below the Massachusetts state average of 70/100 for the same model series.
How many water systems serve South Hamilton?
Our records map 1 water system to 1 ZIP code in South Hamilton. The related population figure in our data is approximately 7,646 people; it is not a count of people served citywide.
How much does it cost to fix water issues in South Hamilton?
Estimated remediation cost per household in South Hamilton: $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). South Hamilton, MA: High Radon Potential Area - Home Safety 50/100. https://zipcheckup.com/cities/ma/south-hamilton/
BibTeX 
@misc{zipcheckup-cities-ma-south-hamilton,
  author = {{ZipCheckup}},
  title  = {{South Hamilton, MA: High Radon Potential Area - Home Safety 50/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ma/south-hamilton/}
}

Page version: October 2026.

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