Castine, ME: 2 Health Violations — 64/100 (2026)
2 ZIP codes · 2 water systems · Updated 2026-06-03
Castine shows moderate tap water quality for ME — some areas carry documented EPA violations while others meet standards without issues.
How Castine Compares
Data: EPA SDWIS Last verified: 2026-06-03
Castine Water: The Quick Version
- Your city's water systems recorded 18 violations in the past 5 years.
- Average lead level: 0.0022 mg/L.
- Estimated remediation: $2,100 per household.
- CDC health risk index: 13.24 — above typical levels.
Water Systems Serving Castine
2 independent water providers serve Castine, ME — 2 systems appear in federal records.
Overview
We track water quality and home safety data for 2 ZIP codes in Castine, Maine, covering 2 community water systems serving approximately 1,222 people.
2 of 2 ZIP codes (100%) have recorded EPA violations. 2 health-based violations documented.
Home Safety Score
Average Home Safety Score for Castine: C (64/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Castine water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0022 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 2 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Gross Beta | Radionuclides | 9 | 2 |
| Stage 1 DBP Rule | Treatment Technique | 9 | 2 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 6 | 2 |
| Consumer Confidence Report Rule | Reporting | 3 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 04420 | C | 9 | 1 | Castine Water Department |
| 04421 | C | 9 | 1 | Castine Water Department |
All ZIP Codes in Castine
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
CDC Health Data for Castine
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Castine
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Castine: Remediation Cost in Perspective
In Castine, property wealth outpaces what documented remediation typically demands — the equity burden lands well within the low tier.
Remediation costs in Castine are relatively low compared to home values. The $1,350–$3,000 estimated range is a small fraction of median property value. Home values are 114% above the Maine average.
Protecting Children from Lead in Castine
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead risk in Castine appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Castine
Within the NFIP's national dataset, Castine falls in moderate-exposure territory — 6 documented incidents spanning multiple decades, with 50% of local ZIP codes sitting inside FEMA flood boundaries. That combination warrants inclusion in any thorough local water quality review.
Castine has a moderate flood history with 6 FEMA claims averaging $6,124 per payout. 50% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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. Flood damage can add significantly to the estimated <strong>$2,100</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Castine
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. Filters rated for Gross Beta can reduce the most common contaminant found in Castine's water.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Deep Dive Reports
Detailed analysis for Castine, ME