Neighborhood Report Grade C

Portland, ME Neighborhood Water Quality — Grade C

9 ZIP codes · 189 EPA violations

Data source: EPA SDWIS Last verified: 2026-06-04

Water quality varies significantly across Portland, ME. We analyzed 9 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.

City Overview: Grade C (63/100)

Grade	Neighborhoods	%
A	0	0%
B	0	0%
C	9	100%
D	0	0%
F	0	0%

Neighborhood Rankings

Every ZIP code in Portland ranked by Home Safety Score:

Rank	ZIP Code	Score	Grade	Violations	Lead Risk
1	04104	67	C	21	0.0019 mg/L
2	04109	67	C	21	0.0019 mg/L
3	04101	62	C	21	0.0019 mg/L
4	04102	62	C	21	0.0019 mg/L
5	04103	62	C	21	0.0019 mg/L
6	04112	62	C	21	0.0019 mg/L
7	04122	62	C	21	0.0019 mg/L
8	04123	62	C	21	0.0019 mg/L
9	04124	62	C	21	0.0019 mg/L

How Neighborhoods Compare

Each ZIP code compared to county and state averages:

9 neighborhoods score better than county average
0 neighborhoods score worse than county average

EPA Violations

189 total violations across Portland
27 health-based violations
9 of 9 ZIP codes have violations
0 ZIP codes exceed EPA lead action level

Top Contaminants

Contaminant	Violations	ZIPs
Surface Water Treatment Rule	63	9
Stage 1 DBP Rule	54	9
Barium	18	9
Chlorite	18	9
Consumer Confidence Report Rule	18	9

Frequently Asked Questions

What is the safest neighborhood in Portland?

ZIP code 04104 has the highest safety score in Portland at 67/100 (grade C). Check the full report for details.

Is Portland water safe to drink?

Portland has an average water safety score of 63/100 (C). Water quality varies by neighborhood — no ZIP codes currently exceed EPA lead limits. Always check your specific ZIP code.

Data Sources

EPA SDWIS
U.S. Census Bureau

Updated daily.