Montgomery County, Pennsylvania
87 ZIP codes · Avg score 40/100 · Grade D · Updated
ZipCheckup grade for Montgomery County: D.
Several federal signals point to home-safety risks in this ZIP.
Your top priority: see the breakdown below and consider a certified water filter. NSF certified filters →
Although conditions vary by area, Montgomery County's 87 ZIP codes collectively show below-average water safety - health-based violations are documented throughout the county, and the overall grade reflects a pattern rather than isolated incidents.
How Montgomery County Compares
How Montgomery County Compares
Montgomery County scores 17 points below the Pennsylvania state average (57/100) and 33 points below the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Montgomery County, Pennsylvania
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Estimated additional annual cost per homeowner: $5,110, driven primarily by sea_level
71.4% of homes built before 1978 (lead paint era)
Violation History (2021–2026)
↓ Improving trendEPA violation counts by year across Montgomery County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 42 violations. Past 5 years: 74 total (74 health-based). Health-based violations are declining versus the prior 2-year window.
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $5,110
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
374,633 housing units in Montgomery County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Montgomery County
Remediation costs are relatively manageable for most homeowners in Montgomery County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Water systems serving Montgomery County
8 community water systems serving Montgomery County.
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- D
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Show all 8 water systems
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- D
34 total water systems serve Montgomery County.
Systems with the most violations in Montgomery County
5 water systems with recorded EPA violations.
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All ZIP Codes in Montgomery County
87 ZIP codes tracked in Montgomery County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 19438 | Harleysville | 50 | D | 0 | $455K |
| 2 | 19474 | Skippack | 50 | D | 0 | $327K |
| 3 | 19490 | Worcester | 50 | D | 0 | $1214K |
| 4 | 19468 | Royersford | 48 | D | 7 (1 health) | $384K |
| 5 | 19473 | Schwenksville | 48 | D | 9 | $455K |
| 6 | 19492 | Zieglerville | 48 | D | 8 | $435K |
| 7 | 19525 | Gilbertsville | 48 | D | 7 | $393K |
| 8 | 18074 | Perkiomenville | 47 | D | 10 | $388K |
| 9 | 18915 | Colmar | 47 | D | 11 | $504K |
| 10 | 19436 | Gwynedd | 47 | D | 11 | — |
| 11 | 19437 | Gwynedd Valley | 47 | D | 11 | — |
| 12 | 19464 | Pottstown | 47 | D | 8 (2 health) | $232K |
| 13 | 19477 | Spring House | 47 | D | 11 | — |
| 14 | 18936 | Montgomeryville | 46 | D | 15 | $283K |
| 15 | 19446 | Lansdale | 46 | D | 13 | $415K |
| 16 | 18964 | Souderton | 43 | D | 22 | $340K |
| 17 | 19001 | Abington | 40 | D | 30 (1 health) | $343K |
| 18 | 19003 | Ardmore | 40 | D | 30 (1 health) | $441K |
| 19 | 19004 | Bala Cynwyd | 40 | D | 30 (1 health) | $616K |
| 20 | 19009 | Bryn Athyn | 40 | D | 30 (1 health) | $668K |
| 21 | 19012 | Cheltenham | 40 | D | 30 (1 health) | $321K |
| 22 | 19027 | Elkins Park | 40 | D | 30 (1 health) | $349K |
| 23 | 19035 | Gladwyne | 40 | D | 30 (1 health) | $1388K |
| 24 | 19038 | Glenside | 40 | D | 30 (1 health) | $388K |
| 25 | 19041 | Haverford | 40 | D | 30 (1 health) | $909K |
| 26 | 19046 | Jenkintown | 40 | D | 30 (1 health) | $447K |
| 27 | 19066 | Merion Station | 40 | D | 30 (1 health) | $871K |
| 28 | 19072 | Narberth | 40 | D | 30 (1 health) | $777K |
| 29 | 19075 | Oreland | 40 | D | 30 (1 health) | $415K |
| 30 | 19085 | Villanova | 40 | D | 30 (1 health) | $1007K |
| 31 | 19087 | Wayne | 40 | D | 30 (1 health) | $693K |
| 32 | 19095 | Wyncote | 40 | D | 30 (1 health) | $419K |
| 33 | 19096 | Wynnewood | 40 | D | 30 (1 health) | $712K |
| 34 | 19444 | Lafayette Hill | 40 | D | 30 (1 health) | $498K |
| 35 | 19401 | Norristown | 39 | F | 32 (1 health) | $226K |
| 36 | 19405 | Bridgeport | 39 | F | 32 (1 health) | $315K |
| 37 | 19406 | King Of Prussia | 39 | F | 32 (1 health) | $394K |
| 38 | 19428 | Conshohocken | 39 | F | 32 (1 health) | $446K |
| 39 | 19440 | Hatfield | 38 | F | 38 | $413K |
| 40 | 19031 | Flourtown | 36 | F | 42 (1 health) | $519K |
| 41 | 19462 | Plymouth Meeting | 35 | F | 44 (1 health) | $452K |
| 42 | 18041 | East Greenville | 33 | F | 314 | $286K |
| 43 | 18070 | Palm | 33 | F | 213 | $275K |
| 44 | 18073 | Pennsburg | 33 | F | 308 | $342K |
| 45 | 18076 | Red Hill | 33 | F | 305 | $254K |
| 46 | 19002 | Ambler | 33 | F | 153 (1 health) | $559K |
| 47 | 19006 | Huntingdon Valley | 33 | F | 116 (8 health) | $519K |
| 48 | 19025 | Dresher | 33 | F | 53 (1 health) | $606K |
| 49 | 19034 | Fort Washington | 33 | F | 53 (1 health) | $611K |
| 50 | 19040 | Hatboro | 33 | F | 194 (1 health) | $368K |
| 51 | 19044 | Horsham | 33 | F | 190 (1 health) | $373K |
| 52 | 19090 | Willow Grove | 33 | F | 101 (1 health) | $338K |
| 53 | 19403 | Norristown | 33 | F | 941 | $356K |
| 54 | 19422 | Blue Bell | 33 | F | 55 (1 health) | $573K |
| 55 | 19426 | Collegeville | 33 | F | 881 (1 health) | $471K |
| 56 | 19454 | North Wales | 33 | F | 141 | $438K |
| 57 | 19460 | Phoenixville | 33 | F | 983 (2 health) | $426K |
| 58 | 18054 | Green Lane | — | — | 6 | $409K |
| 59 | 18084 | Sumneytown | — | — | — | |
| 60 | 18918 | Earlington | — | — | — | |
| 61 | 18924 | Franconia | — | — | — | |
| 62 | 18957 | Salford | — | — | — | |
| 63 | 18958 | Salfordville | — | — | — | |
| 64 | 18971 | Tylersport | — | — | — | |
| 65 | 18979 | Woxall | — | — | — | |
| 66 | 19404 | Norristown | — | — | — | |
| 67 | 19407 | Audubon | — | — | — | |
| 68 | 19408 | Eagleville | — | — | — | |
| 69 | 19409 | Fairview Village | — | — | — | |
| 70 | 19415 | Eagleville | — | — | — | |
| 71 | 19423 | Cedars | — | — | — | |
| 72 | 19424 | Blue Bell | — | — | — | |
| 73 | 19429 | Conshohocken | — | — | — | |
| 74 | 19430 | Creamery | — | — | — | |
| 75 | 19435 | Frederick | — | — | $235K | |
| 76 | 19441 | Harleysville | — | — | — | |
| 77 | 19443 | Kulpsville | — | — | — | |
| 78 | 19450 | Lederach | — | — | — | |
| 79 | 19451 | Mainland | — | — | — | |
| 80 | 19453 | Mont Clare | — | — | 12 (1 health) | $256K |
| 81 | 19455 | North Wales | — | — | — | |
| 82 | 19456 | Oaks | — | — | 1 | $588K |
| 83 | 19472 | Sassamansville | — | — | $440K | |
| 84 | 19478 | Spring Mount | — | — | — | |
| 85 | 19484 | Valley Forge | — | — | — | |
| 86 | 19486 | West Point | — | — | — | |
| 87 | 19504 | Barto | — | — | 245 | $346K |
Recommended Buyer Guides for Montgomery County
Retailer arrangements don't shape what appears here - the selection logic is independent, filtered against EPA detections and the federal hazard data on file for this county.
- Best Water Filters for PFAS — PFAS detected in 12 ZIP codes
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Lead Paint Test Kits — 71.4% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Montgomery County, Pennsylvania
Overview
Montgomery County in Pennsylvania covers 87 tracked ZIP records with an average Home Safety Score of D (40/100) across 57 scored records.
58 of 61 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 12 health-based violations appear in the available health breakdown.
← Back to Pennsylvania Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
What You Can Do
Montgomery County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
71.4% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.