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Bowling Green, KY · 167,921 people served · EPA data 2021–2026

Tap water quality in Bowling Green, Kentucky

Bowling Green'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
Bowling Green water grade: B-
Good — our A–F grade from this city's EPA compliance record, relative to Kentucky and the nation. How we grade →
Health-based violations, 2021–20260
Federal health standardsall met
Warren County Water District91,118 served
Bowling Green Municipal Utilities53,601 served
Butler County Water System Inc14,256 served
Simpson County Water District8,946 served
Kentucky quality rank#38 / 51 (80.5/100)
Kentucky avg hardness112 PPM (moderately hard)
Want to know what's actually in your Bowling Green 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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Bowling Green tap water FAQ

Is tap water safe to drink in Bowling Green?

Bowling Green'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 Bowling Green's water?

Warren County Water District (serving about 91,118 people); Bowling Green Municipal Utilities (serving about 53,601 people); Butler County Water System Inc (serving about 14,256 people); Simpson County Water District (serving about 8,946 people). Data: EPA Safe Drinking Water Information System, July 2026.

How hard is the water in Bowling Green?

City-level hardness isn't published in a single federal dataset, but Kentucky averages 112 PPM — "moderately hard" on the USGS scale. Your utility's water quality report lists Bowling Green'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 Bowling Green?

The municipal record is clean, so filtering in Bowling Green 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 Bowling Green 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.