CASTINE WATER DEPARTMENT
PWS ID: ME0090330 · CASTINE, Maine 04421
CASTINE WATER DEPARTMENT serves 983 people in CASTINE, Maine using Surface Water water sources. It has 48 recorded EPA violations, including 38 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: CASTINE WATER DEPARTMENT
CASTINE WATER DEPARTMENT is a local-owned community water system that delivers drinking water to 983 residents in CASTINE, Maine (Hancock County) through 393 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 48 total violations for this system , of which 38 (79%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 8 monitoring and reporting violations are on file. The most recent violation on record dates to 2009.
The most frequently cited contaminant at this system is Arsenic, recorded in 26 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.
Across Maine, EPA tracks 1,864 public water systems serving 936,624 people, with 148,796 cumulative violations and 23,741 health-based violations on record. About 94% of systems in the state carry at least one violation, and state-wide the average per system is 79.8 violations. CASTINE WATER DEPARTMENT's 48 violations sit below the Maine average. Statewide, 14 of 41 UCMR5-tested systems have reported PFAS detections (34.1%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 393
- County
- Hancock
- School/Daycare
- No
- MCL Violations
- 38
- Monitoring Violations
- 8
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 26 | 2008 |
| Lead and Copper Rule | MR | 8 | 2008 |
| Coliform (TCR) | MCL | 4 | 1991 |
| Combined Radium (-226 and -228) | MCL | 4 | 2009 |
| Gross Alpha, Excl. Radon and U | MCL | 4 | 2009 |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for CASTINE WATER DEPARTMENT.
EPA SDWIS — Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID ME0090330 on SDWISSource: EPA SDWIS Federal Reports Search
Maine Drinking Water Authority
Maine's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.
Find ME regulator via EPA SDWISViolation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2009 | Combined Radium (-226 and -228) | MCL | 4 | SDWIS / ME0090330 / 4010 |
| 2009 | Gross Alpha, Excl. Radon and U | MCL | 4 | SDWIS / ME0090330 / 4000 |
| 2008 | Arsenic | MCL | 26 | SDWIS / ME0090330 / 1005 |
| 2008 | Lead and Copper Rule | MR | 8 | SDWIS / ME0090330 / 5000 |
| 1991 | Coliform (TCR) | MCL | 4 | SDWIS / ME0090330 / 3100 |
How CASTINE WATER DEPARTMENT Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | CASTINE WATER DEPARTMENT | Maine avg | Federal benchmark |
|---|---|---|---|
| Total violations | 48 | 79.8 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 38 | 12.7 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 34.1% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 983 | 502 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,864 regulated public water systems in Maine.
Federal MCL reference — Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
Is CASTINE WATER DEPARTMENT water safe to drink? ▼
How many people does CASTINE WATER DEPARTMENT serve? ▼
What type of violations does CASTINE WATER DEPARTMENT have? ▼
Has PFAS been detected in CASTINE WATER DEPARTMENT water? ▼
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Related Data for Maine
Read our methodology — how this data is sourced, computed, and verified.