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Millville, DE · 51,115 people served · EPA data 2021–2026

Tap water quality in Millville, Delaware

Millville's water systems logged 1 health-based EPA violation in 2021–2026, most recently in 2023 — a modest record, with nitrate the issue found. For context, Delaware's systems average 1.0 health-based violations each.

C+Fair
Millville water grade: C+
Fair — our A–F grade from this city's EPA compliance record, relative to Delaware and the nation. How we grade →
Health-based violations, 2021–20261
Nitrate1
Bethany Bay Pump District51,000 served
Bethany Crest Llc115 served
Delaware quality rank#34 / 51 (81.3/100)
Delaware avg hardness200 PPM (very hard)
Want to know what's actually in your Millville 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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Millville tap water FAQ

Is tap water safe to drink in Millville?

Millville's systems logged 1 health-based violation in 2021–2026, most commonly nitrate. A violation is a red flag for a period of time, not a permanent condition — your utility's current Consumer Confidence Report shows today's status, and a certified home test shows what's at your tap.

Who supplies Millville's water?

Bethany Bay Pump District (serving about 51,000 people); Bethany Crest Llc (serving about 115 people). Data: EPA Safe Drinking Water Information System, July 2026.

How hard is the water in Millville?

City-level hardness isn't published in a single federal dataset, but Delaware averages 200 PPM — "very hard" on the USGS scale. Your utility's water quality report lists Millville'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 Millville?

With 1 health-based violation on record in 2021–2026, a certified filter is reasonable insurance here: reverse osmosis ($150–$1,300 installed, Angi 2026) covers lead, nitrates and PFAS at the tap. Test first ($50–$200) so you buy for what's actually present.

Want to know what's actually in your Millville 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.