ZipCheckup grade for 19436: D.

Federal records show several conditions worth reviewing.

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

Water Quality Report
D 47

Gwynedd, PA (19436): PFAS Above 2029 MCL Level - 47/100

EPA data for North Wales Water Authority

PFAS Detected High County Radon Potential

EPA records for the water systems mapped to 19436 in Gwynedd, PA contain 11 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 0 are marked health-based.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources
Latest air quality, EPA records and weather alerts Current data temporarily unavailable
Current EPA violation data unavailable
Water records and current conditions
Current EPA violation data unavailable
Safety Score
D 47/100
Water Quality PFAS above MCL 11 non-health-based violation records in EPA data
Lead Risk Below action level 0.0016 mg/L, 90th percentile, sample period ending 2025-09-30
NFIP Claim History N/A
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water EPA records for water systems mapped to this ZIP show 11 violations (non-health) (since 2021).
  • Lead The reported 90th-percentile lead result of 0.0016 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
  • PFAS At least one PFAS result is above an EPA MCL value (UCMR5 sampling; MCL compliance required from 2029).
  • Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
Contaminant Summary
Violations on record (not health-based)
11 violations PFAS detected
Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record Consumer Confidence Report: source date or period is not present in ZipCheckup's accepted source record
D
ZIP-level Home Safety model score: 47 / 100
Bottom 5% of U.S. ZIP codes
1
Water System
72,496
People Served
0
Health Violations (since 2021)
Surface water
Water Source
0.0016 mg/L
Reported Lead Result
Zone 1
County Radon Potential · High

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Score Breakdown

Overall Home Safety Score: 47/100

This is the published model score. Component and domain values are shown independently; they are not added together on this page.

Canonical components

EPA water compliance
80/100
Observed
PFAS MCL screen
0/100
Observed
EPA radon zone
0/100
Observed
Annual EPA AirData AQI
100/100
Observed

Required domains

Drinking water
40/100
Indoor environment
0/100
Outdoor environment
100/100

Coverage: 4 of 4 components and 3 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (8) CRITICAL

Your Water System

ZIP code 19436 in Gwynedd, Pennsylvania is mapped to the water system North Wales Water Authority (EPA ID: PA1460048). This system provides water to approximately 72,496 people from surface water sources.

Other Water Quality Reports in Pennsylvania

Nearby Water Quality Reports

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for North Wales Water Authority (PA1460048) on EPA.gov.

4 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.

📊 EPA Safe Drinking Water · View source →

PFAS Contamination Detected

PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 19436. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.

Detected compounds: PFOA, PFOS, PFPeA, PFHxA, PFBA, PFBS, PFHpA, PFNA, PFHxS.

Highest measured level: 0.013 µg/L

Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.

📊 EPA UCMR5 · View source →
Environmental Hazards (10) CRITICAL
Home & Infrastructure (8) MODERATE

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Cost & Community (7) HIGH

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Protect Your Home in Gwynedd

Based on local data for ZIP 19436, these services may benefit homeowners in your area.

Based on local data for your area. Use the tools below to explore your options.

Gutter Installation & Repair

The median home in 19436 was built around 1963. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.

Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home

Estimate Your Home Maintenance Costs

Window Replacement

The median build year of homes in Gwynedd is 1963; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.

Typical cost: Window replacement: typically $300–$800 per window installed

Estimate Your Home Maintenance Costs

Roofing Inspection & Repair

Homes built around 1963 may be on their second or third roof. A professional inspection can catch damage before leaks start.

Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500

Estimate Your Home Insurance Needs

Service recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.

Frequently Asked Questions

Is the tap water in 19436 safe to drink?

EPA SDWIS records 11 violations since 2021 across the water systems mapped to ZIP 19436 (primary system: North Wales Water Authority), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.

Where does 19436's water come from?

The recorded water source for North Wales Water Authority, a system mapped to ZIP code 19436, is Surface water. This system serves approximately 72,496 people.

How does Gwynedd water compare to the national average?

Gwynedd's Home Safety Score ranks lower than 95% of U.S. ZIP codes, and lower than 73% of ZIP codes within Pennsylvania.

How can I get my water tested in Gwynedd?

If North Wales Water Authority supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.

Is lead a concern in 19436 tap water?

The Lead and Copper Rule record selected for 19436 reports a 90th-percentile lead result of 0.0016 mg/L for a water system mapped to this ZIP (record date 2025-09-30). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.

What is the radon risk for 19436?

19436 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Montgomery County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.

Are there PFAS (forever chemicals) in 19436's water?

Yes, PFAS have been detected in samples from water systems mapped to 19436. One or more PFAS results are above the level of a federal PFAS MCL with compliance required from 2029. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.

How to cite this page

APA ZipCheckup. (2026). Gwynedd, PA (19436): PFAS Above 2029 MCL Level - 47/100. https://zipcheckup.com/report/19436/
BibTeX 
@misc{zipcheckup-report-19436,
  author = {{ZipCheckup}},
  title  = {{Gwynedd, PA (19436): PFAS Above 2029 MCL Level - 47/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/19436/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 19436

ZIP Code City, State Distance Grade Violations
19454 North Wales, PA 1.0 mi F 141
19437 Gwynedd Valley, PA 1.5 mi D 11
19455 North Wales, PA 1.6 mi N/A 0
19477 Spring House, PA 1.6 mi D 11
18936 Montgomeryville, PA 1.8 mi D 15
19002 Ambler, PA 2.4 mi F 153
19486 West Point, PA 2.7 mi N/A 0
19446 Lansdale, PA 3.4 mi D 13
19422 Blue Bell, PA 3.4 mi F 55
19424 Blue Bell, PA 3.5 mi N/A 0

Contaminants Detected in 19436

Learn more about the contaminants found in your water supply:

Overall safety breakdown

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Coverage: 15/17 risk factors Data sources →
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