MOUNT DESERT WATER DIST -SEAL
PWS ID: ME0091420 · NORTHEAST HARBOR, Maine 04662
MOUNT DESERT WATER DIST -SEAL serves 865 people in NORTHEAST HARBOR, Maine using Surface Water water sources. It has 24 recorded EPA violations, including 4 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: MOUNT DESERT WATER DIST -SEAL
MOUNT DESERT WATER DIST -SEAL is a local-owned community water system that delivers drinking water to 865 residents in NORTHEAST HARBOR, Maine (Hancock County) through 346 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 24 total violations for this system , of which 4 (17%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 17 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.
The most frequently cited contaminant at this system is Bromate, recorded in 9 violations (MR). 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. MOUNT DESERT WATER DIST -SEAL's 24 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
- 346
- County
- Hancock
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 17
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Bromate | MR | 9 | 2024 |
| Lead and Copper Rule | MR | 6 | 1998 |
| Lead and Copper Rule | TT | 2 | 1997 |
| CARBON, TOTAL | MR | 2 | 2017 |
| Consumer Confidence Rule | Other | 2 | 2023 |
| Coliform (TCR) | MCL | 2 | 1994 |
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 MOUNT DESERT WATER DIST -SEAL.
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 ME0091420 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 |
|---|---|---|---|---|
| 2024 | Bromate | MR | 9 | SDWIS / ME0091420 / 1011 |
| 2023 | Consumer Confidence Rule | Other | 2 | SDWIS / ME0091420 / 7000 |
| 2017 | CARBON, TOTAL | MR | 2 | SDWIS / ME0091420 / 2920 |
| 1998 | Lead and Copper Rule | MR | 6 | SDWIS / ME0091420 / 5000 |
| 1997 | Lead and Copper Rule | TT | 2 | SDWIS / ME0091420 / 5000 |
| 1994 | Coliform (TCR) | MCL | 2 | SDWIS / ME0091420 / 3100 |
How MOUNT DESERT WATER DIST -SEAL Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | MOUNT DESERT WATER DIST -SEAL | Maine avg | Federal benchmark |
|---|---|---|---|
| Total violations | 24 | 79.8 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 4 | 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 | 865 | 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
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Related Data for Maine
Read our methodology — how this data is sourced, computed, and verified.