CITY REPORT NH

Stratham, NH: 2 Violations - Home Safety 66/100

1 ZIP code · 1 water system · Updated

ZipCheckup grade for Stratham: C.

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

Stratham, NH holds a middle-tier grade; review the underlying water system records for the reasons behind it.

How Stratham Compares

Stratham66/100
New Hampshire avg74/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
1
ZIPs Linked to Systems with Violations
C · 66
Avg Safety Score
Zone 2
County Radon Potential (Moderate)
$600K
Median Home Value
$500
Est. Remediation (0.1% of home value)

Key Facts for Stratham Residents

  • Your city's water systems recorded 2 violations since 2021.
  • Homes built before 1986: 50% - older plumbing may contain lead solder.
  • Estimated remediation: $500 per household.
  • Health risk index (ZipCheckup composite of CDC data): 11.66.

Stratham's Water Providers

Public water system records for Stratham, NH point to a single listed provider, drawn from 1 system in the federal data; its violation record appears below.

Overview

We track home safety data for 1 ZIP code in Stratham, New Hampshire (population ~7,742), covering 1 community water system serving approximately 34,000 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 Stratham: C (66/100)

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

Stratham water systems draw from: Groundwater.

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

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
Haloacetic Acids (HAA5) Disinfection Byproducts 2 1
Total Trihalomethanes (TTHM) Disinfection Byproducts 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
03885 C 2 0 Aquarion Water/nh

All ZIP Codes in Stratham

  • 03885 [C] - 2 violations

Data Sources

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

Stratham Community Health Snapshot

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

What's in Stratham's Water?

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.

Stratham Infrastructure Age

1984
Median Build Year
50%
Built Before 1986
14%
Built Before 1970
Copper
Likely Pipe Material

With 50% 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

Median construction year in Stratham: 1984, set against the 1986 federal lead limits for new plumbing.

1984
Median Year Built
50%
Pre-1986 (lead solder era; lead paint banned 1978)
14%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (14%) 1970–1986 (36%) Post-1986 (50%)

Over half of homes in Stratham 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 Stratham

Relative to home values, Stratham remediation estimates run low.

Median Home Value
$599,500
Est. Remediation
$500
Remediation as % of home value 0.1%

Estimated remediation costs in Stratham 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 65% above the New Hampshire average.

Stratham: Lead Risk & Vulnerable Populations

50%
Homes Built Before 1986

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.

Stratham: NFIP Claim Records and Water-Quality Context

5
Total FEMA Flood Claims
$7,776
Avg Reported Sum With Payment Data
0%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Stratham contains 5 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $7,776. 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 $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 Stratham

  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 Haloacetic Acids (HAA5), listed in the water-quality records for Stratham: 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 50% of homes built before 1986, lead solder is a real possibility.

Deep Dive Reports

Detailed analysis for Stratham, NH

Frequently Asked Questions

What does the Home Safety Score mean for Stratham, NH?
Stratham has an average Home Safety Score of 66/100 (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. 2 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 Stratham?
EPA records list 2 EPA violations for Stratham water systems. These water-system violations are shown for 1 mapped ZIP code.
How does Stratham compare to New Hampshire average?
Stratham has an average Home Safety Score of 66/100, which is below the New Hampshire state average of 74/100 for the same model series.
How many water systems serve Stratham?
Our records map 1 water system to 1 ZIP code in Stratham. The related population figure in our data is approximately 7,742 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Stratham?
Estimated remediation cost per household in Stratham: $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). Stratham, NH: 2 Violations - Home Safety 66/100. https://zipcheckup.com/cities/nh/stratham/
BibTeX 
@misc{zipcheckup-cities-nh-stratham,
  author = {{ZipCheckup}},
  title  = {{Stratham, NH: 2 Violations - Home Safety 66/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/nh/stratham/}
}

Page version: October 2026.

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