F0/100
SOUTHWEST HARBOR WATER & SEWER DISTRICT — Water Quality Report 2026
Serving 2,480 people · Maine
Water Source
Surface Water
County
—
System ID
ME0091490
Violations
93
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
5
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Disinfection byproduct treatment technique failure
When: October 19, 2023Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2022 – April 18, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: April 1, 2022 – June 30, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: April 1, 2022 – June 30, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: December 30, 2021 – May 23, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About SOUTHWEST HARBOR WATER & SEWER DISTRICT
Is SOUTHWEST HARBOR WATER & SEWER DISTRICT water safe to drink?
SOUTHWEST HARBOR WATER & SEWER DISTRICT water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 93 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has SOUTHWEST HARBOR WATER & SEWER DISTRICT detected?
1 contaminants were tested in SOUTHWEST HARBOR WATER & SEWER DISTRICT's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does SOUTHWEST HARBOR WATER & SEWER DISTRICT have any EPA violations?
Yes, SOUTHWEST HARBOR WATER & SEWER DISTRICT has 93 EPA violation(s) on record, with the most recent in 2023. Violation types include Other, MR, MCL. 60 are health-based violations.
How many people does SOUTHWEST HARBOR WATER & SEWER DISTRICT serve?
SOUTHWEST HARBOR WATER & SEWER DISTRICT serves approximately 2,480 people, Maine. The system provides water to 1 community: Southwest Hbr.
What type of water does SOUTHWEST HARBOR WATER & SEWER DISTRICT provide?
SOUTHWEST HARBOR WATER & SEWER DISTRICT sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is ME0091490.
How does SOUTHWEST HARBOR WATER & SEWER DISTRICT compare to other utilities in Maine?
SOUTHWEST HARBOR WATER & SEWER DISTRICT scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Maine state page for a full comparison of water systems.