CITY REPORT NJ

Randolph, NJ: PFAS Found in Water - Home Safety 43/100

1 ZIP code · 3 water systems · Updated

ZipCheckup grade for Randolph: D.

Federal records show several conditions worth reviewing.

Your top priority: see the breakdown below and consider a certified water filter. NSF certified filters →

Averaged across its ZIP codes, the Home Safety Score for Randolph, NJ falls into the bottom two grade bands.

How Randolph Compares

Randolph43/100
New Jersey avg61/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
3
Water Systems
1
ZIPs Linked to Systems with Violations
D · 43
Avg Safety Score
Zone 1
County Radon Potential (High)
$636K
Median Home Value
$600
Est. Remediation (0.1% of home value)

Key Facts for Randolph Residents

  • Your city's water systems recorded 57 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.0044 mg/L.
  • Homes built before 1986: 64% - older plumbing may contain lead solder.
  • Estimated remediation: $600 per household.
  • Health risk index (ZipCheckup composite of CDC data): 9.89.

Randolph's Water Providers

Counting every public water system linked to Randolph, NJ in federal data gives 3. The list below keeps the 3 largest by reported population served, a figure that covers each system's whole service area rather than the city alone. A household's own supplier is named on its water bill.

Overview

We track home safety data for 1 ZIP code in Randolph, New Jersey (population ~25,919), covering 3 community water systems serving approximately 93,026 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 Randolph: D (43/100)

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

Randolph water systems draw from: Groundwater, Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0044 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.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Revised Total Coliform Rule Microbiological 8 1
1,2,4-Trichlorobenzene Organic 4 1
cis-1,2-Dichloroethylene Organic 4 1
Xylenes, Total Organic 4 1
Dichloromethane Organic 4 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
07869 D 57 0 Randolph Twp Public Works Department

All ZIP Codes in Randolph

  • 07869 [D] - 57 violations

Data Sources

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

Randolph Community Health Snapshot

8.3%
Asthma (US: 9.8%)
9%
Diabetes (US: 10.4%)
13%
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 8.3% ↓
Diabetes 9% ↓
Mental Health 13% ↓

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

What's in Randolph's Water?

Revised Total Coliform Rule 8 violations
Microbiological
Indicates possible bacterial contamination
1,2,4-Trichlorobenzene 4 violations
Organic
cis-1,2-Dichloroethylene 4 violations
Organic

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

Randolph Infrastructure Age

1971
Median Build Year
64%
Built Before 1986
30%
Built Before 1970
Copper
Likely Pipe Material

With 64% 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 Randolph: 1971, set against the 1986 federal lead limits for new plumbing.

1971
Median Year Built
64%
Pre-1986 (lead solder era; lead paint banned 1978)
30%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (30%) 1970–1986 (34%) Post-1986 (36%)

Over half of homes in Randolph 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 Randolph

Compared with typical property prices, the remediation estimate for Randolph is small in percentage terms - at or under one percent.

Median Home Value
$636,400
Est. Remediation
$600
Remediation as % of home value 0.1%

Estimated remediation costs in Randolph 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 32% above the New Jersey average.

Randolph: Lead Risk & Vulnerable Populations

64%
Homes Built Before 1986
0.0044
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.

Randolph: NFIP Claim Records and Water-Quality Context

28
Total FEMA Flood Claims
$37,347
Avg Reported Sum With Payment Data
0%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Randolph contains 28 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $37,347. 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 Randolph

  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 Randolph: 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 64% 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.

Frequently Asked Questions

What does the Home Safety Score mean for Randolph, NJ?
Randolph has an average Home Safety Score of 43/100 (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. 57 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 Randolph?
EPA records list 57 EPA violations for Randolph water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Randolph water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Randolph is 0.0044 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 Randolph compare to New Jersey average?
Randolph has an average Home Safety Score of 43/100, which is below the New Jersey state average of 61/100 for the same model series.
How many water systems serve Randolph?
Our records map 3 water systems to 1 ZIP code in Randolph. The related population figure in our data is approximately 25,919 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Randolph?
Estimated remediation cost per household in Randolph: $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). Randolph, NJ: PFAS Found in Water - Home Safety 43/100. https://zipcheckup.com/cities/nj/randolph/
BibTeX
@misc{zipcheckup-cities-nj-randolph,
  author = {{ZipCheckup}},
  title  = {{Randolph, NJ: PFAS Found in Water - Home Safety 43/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/nj/randolph/}
}

Page version: October 2026.

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