York County, Maine
50 ZIP codes · Avg score 53/100 · Grade D · Updated 2026-06-03
In recent EPA cycles, York County's 50 ZIP codes show a persistent below-average water quality pattern — documented violations span multiple areas, have appeared consistently across recent reporting periods, and the compliance shortfalls are spread across the county rather than isolated to a single geographic pocket or utility district, suggesting a broader structural issue rather than a localized anomaly.
How York County Compares
How York County Compares
York County scores 4 points below the Maine state average (57/100) and 15 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: York County, Maine
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.2 (asthma 12.7%, diabetes 10.5%)
Estimated additional annual cost per homeowner: $1,430, driven primarily by flood
Infrastructure: 0.391% avg pipe failure probability, 38% of ZIPs at high risk
62.3% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across York County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 6 violations. Past 5 years: 16 total (16 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,430
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
128,501 housing units in York 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 York County
Remediation costs are relatively manageable for most homeowners in York 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.
Health Outcomes vs National Average
CDC PLACES data for York County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in York County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | PORTLAND WATER DISTRICT-GREATER | 135,068 | 21 |
| 2 | Portland Water District/steep Falls | 480 | 21 |
| 3 | Squire Court Llc | 75 | 21 |
| 4 | Duck-a-way on Casco Bay | 65 | 21 |
| 5 | Turner Square Apartments | 63 | 21 |
48 total water systems serve York County.
All ZIP Codes in York County
50 ZIP codes tracked in York County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 3903 | Eliot | 69 | C | 3 | $465K |
| 2 | 3906 | North Berwick | 69 | C | 3 | $386K |
| 3 | 4002 | Alfred | 69 | C | 2 | $321K |
| 4 | 4027 | Lebanon | 69 | C | 2 | $310K |
| 5 | 4049 | Limington | 69 | C | 3 | $265K |
| 6 | 4066 | Orrs Island | 69 | C | 2 | $479K |
| 7 | 4076 | Shapleigh | 69 | C | 3 | $324K |
| 8 | 4087 | Waterboro | 69 | C | 2 | $236K |
| 9 | 4042 | Hollis Center | 68 | C | 1 | $307K |
| 10 | 4007 | Biddeford | 66 | C | 1 | — |
| 11 | 4020 | Cornish | 66 | C | 0 | $244K |
| 12 | 4061 | North Waterboro | 66 | C | 1 | $224K |
| 13 | 3904 | Kittery | 65 | C | 0 | $416K |
| 14 | 3908 | South Berwick | 65 | C | 0 | $385K |
| 15 | 4048 | Limerick | 65 | C | 2 | $264K |
| 16 | 4073 | Sanford | 64 | C | 2 | $260K |
| 17 | 4101 | Portland | 62 | C | 21 (3 health) | $601K |
| 18 | 3909 | York | 60 | C | 0 | $589K |
| 19 | 4093 | Buxton | 60 | C | 10 (2 health) | $316K |
| 20 | 3901 | Berwick | 59 | C | 3 (1 health) | $331K |
| 21 | 4005 | Biddeford | 55 | C | 1 | $352K |
| 22 | 4043 | Kennebunk | 55 | C | 1 | $461K |
| 23 | 4004 | Bar Mills | 53 | D | 0 | — |
| 24 | 4030 | East Waterboro | 53 | D | 0 | $327K |
| 25 | 4041 | Hiram | 53 | D | 0 | $213K |
| 26 | 4047 | Parsonsfield | 53 | D | 0 | $252K |
| 27 | 4083 | Springvale | 53 | D | 0 | $249K |
| 28 | 4072 | Saco | 49 | D | 3 (1 health) | $370K |
| 29 | 3902 | Cape Neddick | 45 | D | 0 | $527K |
| 30 | 3905 | Kittery Point | 45 | D | 0 | $485K |
| 31 | 3911 | York Harbor | 45 | D | 0 | $706K |
| 32 | 4001 | Acton | 45 | D | 0 | $303K |
| 33 | 4006 | Biddeford Pool | 45 | D | 0 | $1142K |
| 34 | 4014 | Cape Porpoise | 45 | D | 0 | — |
| 35 | 4054 | Moody | 45 | D | 0 | — |
| 36 | 4090 | Wells | 45 | D | 8 | $446K |
| 37 | 3907 | Ogunquit | 40 | D | 0 | $799K |
| 38 | 4024 | East Baldwin | 40 | D | 0 | $239K |
| 39 | 4028 | East Parsonsfield | 40 | D | 0 | — |
| 40 | 4056 | Newfield | 40 | D | 0 | $315K |
| 41 | 4063 | Ocean Park | 40 | D | 0 | $435K |
| 42 | 4068 | Porter | 40 | D | 0 | $217K |
| 43 | 4085 | Steep Falls | 40 | D | 0 | $276K |
| 44 | 4091 | West Baldwin | 40 | D | 0 | $243K |
| 45 | 4094 | West Kennebunk | 40 | D | 0 | — |
| 46 | 4095 | West Newfield | 40 | D | 0 | $289K |
| 47 | 4455 | Lee | 40 | D | 0 | $152K |
| 48 | 3910 | York Beach | 35 | F | 0 | — |
| 49 | 4046 | Kennebunkport | 35 | F | 0 | $560K |
| 50 | 4064 | Old Orchard Beach | 35 | F | 0 | $313K |
Recommended Buyer Guides for York County
While many sites publish identical guide lists across every county they cover, the selection here changes by location — driven by the EPA, NSF, FEMA, and CDC datasets that describe the actual conditions documented for this jurisdiction in the federal record.
- Best Lead Paint Test Kits — 62.3% 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
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for York County, Maine
Overview
York County in Maine covers 50 ZIP codes with an average Home Safety Score of D (53/100).
20 of 50 ZIP codes have recorded EPA violations. 7 health-based violations have been documented.
← Back to Maine water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.
What You Can Do
York 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
62.3% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.