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Scarborough, ME · 135,153 people served · EPA data 2021–2026

Tap water quality in Scarborough, Maine

Scarborough's water systems logged zero health-based EPA violations in 2021–2026 — water that met every federal health standard on record. Day-to-day quality still varies with pipes and plumbing, but the municipal record here is clean.

B+Good
Scarborough water grade: B+
Good — our A–F grade from this city's EPA compliance record, relative to Maine and the nation. How we grade →
Health-based violations, 2021–20260
Federal health standardsall met
Portland Water District-Greater135,068 served
Scarborough Gardens45 served
Crystal Spring Estates40 served
Maine quality rank#15 / 51 (85.6/100)
Maine avg hardness60 PPM (soft)
Want to know what's actually in your Scarborough water?

Averages describe states, not your faucet. A certified home water test screens for lead, nitrates, bacteria and dozens of other contaminants — the same categories EPA regulates.

Test your water at home

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Scarborough tap water FAQ

Is tap water safe to drink in Scarborough?

Scarborough's community water systems reported no health-based EPA violations in 2021–2026, meaning the water met federal health standards throughout. Home plumbing (especially pre-1986 lead solder or service lines) can still affect what reaches your glass — a home test settles it.

Who supplies Scarborough's water?

Portland Water District-Greater (serving about 135,068 people); Scarborough Gardens (serving about 45 people); Crystal Spring Estates (serving about 40 people). Data: EPA Safe Drinking Water Information System, July 2026.

How hard is the water in Scarborough?

City-level hardness isn't published in a single federal dataset, but Maine averages 60 PPM — "soft" on the USGS scale. Your utility's water quality report lists Scarborough's exact hardness, or a $10 test strip tells you in a minute. If it comes back over 120 PPM, see our water softener guidance in the purification calculator.

Do I need a water filter in Scarborough?

The municipal record is clean, so filtering in Scarborough is about taste, hardness and your own plumbing rather than compliance. A carbon filter fixes chlorine taste; test first if your home predates 1986 (lead solder era).

Want to know what's actually in your Scarborough water?

Averages describe states, not your faucet. A certified home water test screens for lead, nitrates, bacteria and dozens of other contaminants — the same categories EPA regulates.

Test your water at home

We may earn a commission if you request quotes through this link. It costs you nothing and never affects the data we publish.