US NPS ECHO LAKE (12)
PWS ID: ME0098572 · BAR HARBOR, Maine 04609
US NPS ECHO LAKE (12) serves 250 people in BAR HARBOR, Maine using Groundwater water sources. It has 72 recorded EPA violations, including 4 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: US NPS ECHO LAKE (12)
US NPS ECHO LAKE (12) is a federal-owned transient non-community water system that delivers drinking water to 250 residents in BAR HARBOR, Maine (Hancock County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 72 total violations for this system , of which 4 (6%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 57 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.
The most frequently cited contaminant at this system is Nitrate, recorded in 28 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. US NPS ECHO LAKE (12)'s 72 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
- Transient Non-Community
- Owner Type
- Federal
- Connections
- 1
- County
- Hancock
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 57
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 28 | 2010 |
| Nitrite | MR | 20 | 2008 |
| Public Notice | Other | 6 | 2017 |
| Coliform (TCR) | MR | 5 | 2006 |
| Revised Total Coliform Rule | RPT | 5 | 2023 |
| Revised Total Coliform Rule | MON | 4 | 2020 |
| Revised Total Coliform Rule | TT | 4 | 2017 |
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 US NPS ECHO LAKE (12).
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 ME0098572 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 |
|---|---|---|---|---|
| 2023 | Revised Total Coliform Rule | RPT | 5 | SDWIS / ME0098572 / 8000 |
| 2020 | Revised Total Coliform Rule | MON | 4 | SDWIS / ME0098572 / 8000 |
| 2017 | Public Notice | Other | 6 | SDWIS / ME0098572 / 7500 |
| 2017 | Revised Total Coliform Rule | TT | 4 | SDWIS / ME0098572 / 8000 |
| 2010 | Nitrate | MR | 28 | SDWIS / ME0098572 / 1040 |
| 2008 | Nitrite | MR | 20 | SDWIS / ME0098572 / 1041 |
| 2006 | Coliform (TCR) | MR | 5 | SDWIS / ME0098572 / 3100 |
How US NPS ECHO LAKE (12) Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | US NPS ECHO LAKE (12) | Maine avg | Federal benchmark |
|---|---|---|---|
| Total violations | 72 | 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 | 250 | 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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