Water Quality in Castine, ME: No Violations in Mapped EPA Records
1 water system · 1 directly mapped ZIP records
Available EPA records report no violations across 1 directly mapped ZIP records with known counts for Castine. This does not cover unavailable records or guarantee a specific tap is contaminant-free.
Data: EPA Safe Drinking Water Information System (SDWIS)
Water Quality by ZIP Code in Castine
This table shows typed EPA water evidence only. Missing violation counts are displayed as N/A, not zero.
| ZIP Code | Violations | Health | |
|---|---|---|---|
| 04421 | 0 | 0 | View report → |
Water Quality Overview
Castine, Maine has directly mapped EPA water-system data for 1 ZIP codes. This page reports typed compliance facts and does not relabel the multi-source Home Safety Score as a drinking-water grade.
The available EPA records report no violations across 1 directly mapped ZIP record with reported counts for Castine. This does not guarantee the absence of contaminants.
Lead Levels
The average of the reported 90th-percentile lead results across the ZIP codes of Castine is reported as 0 mg/L (a reported 0 is not proof of no lead; check the source record for its reporting limit); the EPA action level of 0.015 mg/L applies to a water system's own 90th-percentile result and is not a safety threshold (EPA's health goal for lead is zero). No exceedances appear among the 1 ZIP records with known lead status.
With 69% of homes built before 1986, Castine has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.
Water Systems Serving Castine
Castine is served by 1 community water system regulated under the Safe Drinking Water Act. About 1,222 people live in the area (2 ZIP codes, Census); this is not the systems' reported service population.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
How to Check Your Water in Castine
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels and violation history
Request your CCR - your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test - certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration - NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories - monitor your local utility website and local news for boil water advisories or system alerts
Castine vs. Nearby Maine Cities
How Castine's water quality compares to similar cities in Maine:
| City | Direct EPA ZIPs | Violations | Systems | Population |
|---|---|---|---|---|
| Castine | 1 | 0 | 1 | 1,222 |
| Bryant Pond | 1 | 3 | 1 | 1,228 |
| Frankfort | 1 | 0 | 1 | 1,229 |
| Eastport | 1 | 0 | 1 | 1,230 |
Common Questions About Castine Water
These are the most common questions residents search for about water quality in Castine, Maine:
Is Castine water hard or soft? Water hardness varies by source. Castine's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Castine tap water? City-level EPA records cannot determine safety at a specific tap. No health-based violations are recorded across 1 directly mapped ZIP records with known counts, but this is not a property-level safety guarantee.
What is the best water filter for Castine? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Castine vs. Maine Average
Understanding how Castine compares to the broader Maine average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below - water quality can vary significantly even within Castine.
ZIP Codes in Castine
Castine spans 2 ZIP codes. EPA water-system coverage is available for 1 directly mapped ZIP code. Check each ZIP code for detailed contaminant data, violation history, and system information.
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
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Source reporting periods vary. See each cited source for its publication schedule.