TapSafetyReport
A91/100

PORTLAND WATER DISTRICT-GREATER — Water Quality Report 2026

Serving 135,068 people · Maine

Water Source
Surface Water
County
—
System ID
ME0091300
Violations
6

Contaminant Test Results

1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Lead (90th percentile)
0.002 mg/L0.015 mg/LAbove Goal

EPA Violation History

4

Violations (last 5yr)

0

Unresolved

0

Health-Related

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: October 1, 2022 – December 31, 2022Rule: Stage 1 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: October 1, 2022 – December 31, 2022Rule: Stage 1 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

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

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 PORTLAND WATER DISTRICT-GREATER

Is PORTLAND WATER DISTRICT-GREATER water safe to drink?

PORTLAND WATER DISTRICT-GREATER water receives a grade of A (91/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.

What contaminants has PORTLAND WATER DISTRICT-GREATER detected?

76 contaminants were tested in PORTLAND WATER DISTRICT-GREATER's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).

Does PORTLAND WATER DISTRICT-GREATER have any EPA violations?

Yes, PORTLAND WATER DISTRICT-GREATER has 6 EPA violation(s) on record, with the most recent in 2022. Violation types include MR.

How many people does PORTLAND WATER DISTRICT-GREATER serve?

PORTLAND WATER DISTRICT-GREATER serves approximately 135,068 people, Maine. The system provides water to 11 communities: Portland, Raymond, Scarborough, South Portland, Standish, and 6 more.

What type of water does PORTLAND WATER DISTRICT-GREATER provide?

PORTLAND WATER DISTRICT-GREATER 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 ME0091300.

How does PORTLAND WATER DISTRICT-GREATER compare to other utilities in Maine?

PORTLAND WATER DISTRICT-GREATER scores 91/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Maine state page for a full comparison of water systems.

Cities Served

PortlandRaymondScarboroughSouth PortlandStandishWestbrookWindhamCape ElizabethCumberlandFalmouthGorham