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Martinsburg, WV · 54,489 people served · EPA data 2021–2026

Tap water quality in Martinsburg, West Virginia

Martinsburg'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
Martinsburg water grade: B-
Good — our A–F grade from this city's EPA compliance record, relative to West Virginia and the nation. How we grade →
Health-based violations, 2021–20260
Federal health standardsall met
Berkeley County Pswd-Potomac River34,786 served
Martinsburg City Of16,250 served
Va Medical Center2,175 served
Rocky Glen Manufactured Housing Communit861 served
West Virginia quality rank#31 / 51 (82.3/100)
West Virginia avg hardness130 PPM (hard)
Want to know what's actually in your Martinsburg 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.

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Martinsburg tap water FAQ

Is tap water safe to drink in Martinsburg?

Martinsburg'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 Martinsburg's water?

Berkeley County Pswd-Potomac River (serving about 34,786 people); Martinsburg City Of (serving about 16,250 people); Va Medical Center (serving about 2,175 people); Rocky Glen Manufactured Housing Communit (serving about 861 people). Data: EPA Safe Drinking Water Information System, July 2026.

How hard is the water in Martinsburg?

City-level hardness isn't published in a single federal dataset, but West Virginia averages 130 PPM — "hard" on the USGS scale. Your utility's water quality report lists Martinsburg'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 Martinsburg?

The municipal record is clean, so filtering in Martinsburg 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 Martinsburg 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.