Lincoln County, Maine
23 ZIP codes · Avg score 51/100 · Grade D · Updated 2026-07-19
ZipCheckup grade for Lincoln: D.
Several federal signals point to home-safety risks in this ZIP.
Spanning 23 ZIP codes, Lincoln County carries a low water safety grade - health-based violations appear in a significant share of areas.
How Lincoln County Compares
How Lincoln County Compares
Lincoln County scores 6 points below the Maine state average (57/100) and 17 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-19
ZIP Code Risk Map
Water Quality Map: Lincoln County, Maine
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.7 (asthma 12.1%, diabetes 11.6%)
Estimated additional annual cost per homeowner: $1,032, driven primarily by flood
Infrastructure: 0.427% avg pipe failure probability, 65% of ZIPs at high risk
65.7% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Lincoln County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 6 violations. Past 5 years: 13 total (13 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: $1,032
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
19,736 housing units in Lincoln 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 Lincoln County
Remediation costs are relatively manageable for most homeowners in Lincoln 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 Lincoln County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Lincoln County
8 community water systems serving Lincoln County.
- D
- D
- C
- C
- C
- C
Show all 8 water systems
- D
- D
14 total water systems serve Lincoln County.
Systems with the most violations in Lincoln County
4 water systems with recorded EPA violations.
- C
- C
- D
- D
All ZIP Codes in Lincoln County
23 ZIP codes tracked in Lincoln County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 04539 | Bristol | 69 | C | 6 (1 health) | $339K |
| 2 | 04543 | Damariscotta | 69 | C | 5 (1 health) | $333K |
| 3 | 04572 | Waldoboro | 66 | C | 6 (1 health) | $272K |
| 4 | 04537 | Boothbay | 62 | C | 0 | $357K |
| 5 | 04578 | Wiscasset | 56 | C | 22 (7 health) | $302K |
| 6 | 04541 | Chamberlain | 53 | D | 0 | $367K |
| 7 | 04551 | Bremen | 53 | D | 0 | $420K |
| 8 | 04553 | Newcastle | 53 | D | 0 | $406K |
| 9 | 04556 | Edgecomb | 53 | D | 0 | $308K |
| 10 | 04564 | Round Pond | 53 | D | 0 | $492K |
| 11 | 04568 | South Bristol | 53 | D | 0 | $563K |
| 12 | 04570 | Squirrel Island | 53 | D | 0 | — |
| 13 | 04571 | Trevett | 53 | D | 0 | $252K |
| 14 | 04538 | Boothbay Harbor | 45 | D | 0 | $370K |
| 15 | 04544 | East Boothbay | 45 | D | 0 | $466K |
| 16 | 04554 | New Harbor | 45 | D | 0 | $500K |
| 17 | 04576 | Southport | 45 | D | 0 | $416K |
| 18 | 04535 | Alna | 40 | D | 0 | $328K |
| 19 | 04549 | Isle Of Springs | 40 | D | 0 | — |
| 20 | 04555 | Nobleboro | 40 | D | 0 | $295K |
| 21 | 04558 | Pemaquid | 40 | D | 0 | $428K |
| 22 | 04573 | Walpole | 40 | D | 0 | $398K |
| 23 | 04575 | West Boothbay Harbor | 40 | D | 0 | — |
Recommended Buyer Guides for Lincoln 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 1 ZIP code
- Best Lead Paint Test Kits — 65.7% 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
Deep Dive Reports
Detailed analysis for Lincoln County, Maine
Overview
Lincoln County in Maine covers 23 ZIP codes with an average Home Safety Score of D (51/100).
4 of 23 ZIP codes have recorded EPA violations. 10 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
Lincoln 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
65.7% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.