Is South Portland tap water safe to drink?

Yes with good quality

South Portland's tap water meets all EPA standards and scores well on our analysis. It is generally safe to drink though filtration can improve taste and provide extra precaution.

85/100
Purity Score
1
Issues Found
0.8 GPG
Hardness
Not detected
PFAS

1 Issue Detected in South Portland

Arsenic Approaching Limit (0.1 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for South Portland
Maine

4106 · Sebago Lake

Is South Portland Tap Water Safe? Full Analysis

Low Risk Updated March 2026 25,665 residents
See Best Filters for South Portland
85
Purity Score

Residents of South Portland draw from Sebago Lake infrastructure managed by Portland Water District. This 2026 analysis evaluates safety, identifies any concerns, and recommends the best home filtration options.

Contaminant Levels

PFAS
ND
Lead
1 ppb
Nitrate
0.2 mg/L
Arsenic
0.1 mg/L
Hardness
0.8 gpg

Health Insights

  • 1
    South Portland's water meets current EPA standards. Filtration can improve taste and provide extra safety.

Score

85 /100
Excellent
"Good" threshold (70)

South Portland tap water is sourced from Sebago Lake and treated by Portland Water District. Overall purity score: 85/100 (Excellent). Updated for 2026.

Fix Your Water

Best filters matched to South Portland's 1 issue.

See Filters

Explore South Portland Water Data

Forever Chemicals in South PortlandPFAS water report
Lead Risk in South PortlandLead water report
South Portland Hardness ReportScale and minerals
Best FiltersFull comparison
MaineState rankings

South Portland Water FAQ

Is South Portland ME tap water safe to drink in 2026?
South Portland tap water meets EPA federal drinking water standards and scores 85/100 (Excellent) on PurityMap for 2026. For most healthy adults the water is considered safe but point-of-use filtration adds an important layer of protection.
Does South Portland ME use chlorine or chloramine for disinfection?
South Portland uses chloramine as the primary disinfectant with a residual level of 0.8 ppm. Chloramine is harder to remove than free chlorine and requires a catalytic carbon or reverse osmosis filter. Standard Brita-style pitchers will NOT remove chloramine.
How hard is South Portland ME water and what is the TDS level?
South Portland water hardness is 0.8 grains per gallon (soft) with a TDS of 25 ppm (excellent). This level is unlikely to cause significant scale buildup in household plumbing.
Has PFAS been found in South Portland ME drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in South Portland drinking water.

Nearby Reports

PortlandMaine — 85/100LewistonMaine — 85/100BangorMaine — 85/100

All Maine cities

Explore Water Quality by State

Compare across all 50 US states

View All States

Data Sources

  • EPA SDWIS
  • EWG Tap Water Database
  • Portland Water District CCR
  • USGS monitoring data

PurityMap compiles public data. Updated March 2026.

© 2026 PurityMap. For informational purposes only.

Link copied!

Scroll to Top