CITY REPORT NH

Seabrook, NH: 5 Violations - Home Safety 65/100

1 ZIP code · 3 water systems · Updated

ZipCheckup grade for Seabrook: C.

A mixed picture - some signals here are worth your attention.

For residents of Seabrook, NH, a C is a prompt to look up the report for their own ZIP code rather than a verdict on their tap.

How Seabrook Compares

Seabrook65/100
New Hampshire avg74/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
3
Water Systems
1
ZIPs Linked to Systems with Violations
C · 65
Avg Safety Score
Zone 2
County Radon Potential (Moderate)
$435K
Median Home Value
$500
Est. Remediation (0.1% of home value)

Seabrook Water: The Quick Version

  • Your city's water systems recorded 5 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.003 mg/L.
  • Homes built before 1986: 51% - older plumbing may contain lead solder.
  • Estimated remediation: $500 per household.
  • Health risk index (ZipCheckup composite of CDC data): 11.66.

Water Systems Serving Seabrook

Multiple utilities show up for Seabrook, NH: 3 are listed here out of 3 tracked federally.

Overview

We track home safety data for 1 ZIP code in Seabrook, New Hampshire (population ~8,613), covering 3 community water systems serving approximately 48,063 people region-wide. 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. The available record reports no health-based violations for this measured scope.

Home Safety Score

Average Home Safety Score for Seabrook: C (65/100)

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

Seabrook water systems draw from: Groundwater.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0030 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 2.

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
Revised Total Coliform Rule Microbiological 4 1
Haloacetic Acids (HAA5) Disinfection Byproducts 2 1
Total Trihalomethanes (TTHM) Disinfection Byproducts 2 1
E. coli Microbiological 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
03874 C 5 0 Seabrook Water Department

All ZIP Codes in Seabrook

  • 03874 [C] - 5 violations

Data Sources

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

CDC Health Data for Seabrook

10%
Asthma (US: 9.8%)
9.1%
Diabetes (US: 10.4%)
14.4%
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 10% ↑
Diabetes 9.1% ↓
Mental Health 14.4% ↓

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

Key Contaminants Detected in Seabrook

Revised Total Coliform Rule 4 violations
Microbiological
Indicates possible bacterial contamination
Haloacetic Acids (HAA5) 2 violations
Disinfection Byproducts · EPA regulatory level for the contaminant named above: 0.06 mg/L
Increased cancer risk with long-term exposure above the MCL
Total Trihalomethanes (TTHM) 2 violations
Disinfection Byproducts · EPA regulatory level for the contaminant named above: 0.08 mg/L
Increased cancer risk with long-term exposure above the MCL

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

How Old Is Seabrook's Housing Stock?

1984
Median Build Year
51%
Built Before 1986
27%
Built Before 1970
Copper
Likely Pipe Material

With 51% 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

If you live in one of the pre-1986 homes in Seabrook, a certified lab test for lead is the direct way to learn what your tap delivers; the median build year of 1984 is only context.

1984
Median Year Built
51%
Pre-1986 (lead solder era; lead paint banned 1978)
27%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (27%) 1970–1986 (24%) Post-1986 (49%)

Over half of homes in Seabrook 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.

Seabrook: Remediation Cost in Perspective

In Seabrook, estimated remediation comes to 1% or less of the median home value.

Median Home Value
$435,100
Est. Remediation
$500
Remediation as % of home value 0.1%

Estimated remediation costs in Seabrook can be compared with local home values. The $300–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 19% above the New Hampshire average.

Protecting Children from Lead in Seabrook

51%
Homes Built Before 1986
0.003
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.

Historical Flood-Claim Evidence for Seabrook

91
Total FEMA Flood Claims
$11,623
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Seabrook contains 91 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $11,623. 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 $500 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 Seabrook

  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. For Revised Total Coliform Rule, listed in the water-quality records for Seabrook: if it is a rule or reporting requirement rather than a contaminant, ask your utility what the record involved; for bacteria, follow any boil-water notice from your utility; for a specific chemical contaminant, check whether a filter is certified to reduce it. Not every contaminant has a consumer filter certification.
  3. Check your home's plumbing. With 51% of homes built before 1986, lead solder is a real possibility.

Deep Dive Reports

Detailed analysis for Seabrook, NH

Frequently Asked Questions

What does the Home Safety Score mean for Seabrook, NH?
Seabrook has an average Home Safety Score of 65/100 (Grade C) 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. 5 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 Seabrook?
EPA records list 5 EPA violations for Seabrook water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Seabrook water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Seabrook is 0.003 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 Seabrook compare to New Hampshire average?
Seabrook has an average Home Safety Score of 65/100, which is below the New Hampshire state average of 74/100 for the same model series.
How many water systems serve Seabrook?
Our records map 3 water systems to 1 ZIP code in Seabrook. The related population figure in our data is approximately 8,613 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Seabrook?
Estimated remediation cost per household in Seabrook: $500; modeled range $300 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). Seabrook, NH: 5 Violations - Home Safety 65/100. https://zipcheckup.com/cities/nh/seabrook/
BibTeX 
@misc{zipcheckup-cities-nh-seabrook,
  author = {{ZipCheckup}},
  title  = {{Seabrook, NH: 5 Violations - Home Safety 65/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/nh/seabrook/}
}

Page version: October 2026.

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