Mount Desert Water District North
EPA ID: ME0091140 · 1,623 people served · 5 ZIP codes
Where compliant utilities carry no open actions, Mount Desert Water District North shows 3 active EPA violations in the federal database for a service population of approximately 1,623.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Mount Desert Water District North Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Mount Desert Water District North serves a community with a median household income of $79,000 and an estimated 1,906 residents across its service area. Approximately 68% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Mount Desert Water District North's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 1% of homes in Hancock County, Maine rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How Mount Desert Water District North compares to EPA limits
What This Means For You
Total Trihalomethanes (TTHM) at 1 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Contaminant 1011 at 6 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Total Trihalomethanes (TTHM) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
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Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
MOUNT DESERT WATER DIST NORTH (EPA ID: ME0091140) is a community water system in Maine that serves approximately 1,623 people from surface water sources.
This system provides water to 5 ZIP codes across 5 communities.
Average Home Safety Score: C (57/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 1, 2024 | Total Trihalomethanes (TTHM) | Monitoring | Resolved |
| January 1, 2024 | Contaminant 1011 | Monitoring | Resolved |
| January 1, 2024 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| October 1, 2023 | Contaminant 1011 | Monitoring | Unresolved |
| July 1, 2023 | Contaminant 1011 | Monitoring | Resolved |
| July 1, 2023 | Surface Water Treatment Rule | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Contaminant 1011 | Other Violation | 6 | No |
| Surface Water Treatment Rule | Treatment Failure | 2 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 1 | No |
| Consumer Confidence Report Rule | Reporting Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: 3 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 2 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
- 04625 — Cranberry Isles
- 04646 — Islesford
- 04660 — Mount Desert
- 04662 — Northeast Harbor
- 04675 — Seal Harbor
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Mount Desert Water District North (ME0091140) on EPA.gov.
Frequently Asked Questions
Is Mount Desert Water District North water safe to drink?
Mount Desert Water District North has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.
How many people does Mount Desert Water District North serve?
Mount Desert Water District North serves approximately 1,623 people across 5 ZIP codes in Maine.
Where does Mount Desert Water District North get its water?
The primary water source is surface water.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Mount Desert Water District North (EPA ID: ME0091140) — request the latest Consumer Confidence Report or ask about specific contaminants.