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Peoria, IL · 143,381 people served · EPA data 2021–2026

Tap water quality in Peoria, Illinois

Peoria's water systems logged 2 health-based EPA violations in 2021–2026, most recently in 2024 — a modest record, with lead and copper rule revisions the issue found. For context, Illinois's systems average 1.9 health-based violations each.

D+Poor
Peoria water grade: D+
Poor — our A–F grade from this city's EPA compliance record, relative to Illinois and the nation. How we grade →
Health-based violations, 2021–20262
Lead And Copper Rule Revisions2
Il American-Peoria137,575 served
Pleasant Valley Pwd3,783 served
Limestone-Walters Pwd2,023 served
Illinois quality rank#46 / 51 (76.8/100)
Illinois avg hardness120 PPM (moderately hard)
Want to know what's actually in your Peoria 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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Peoria tap water FAQ

Is tap water safe to drink in Peoria?

Peoria's systems logged 2 health-based violations in 2021–2026, most commonly lead and copper rule revisions. 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 Peoria's water?

Il American-Peoria (serving about 137,575 people); Pleasant Valley Pwd (serving about 3,783 people); Limestone-Walters Pwd (serving about 2,023 people). Data: EPA Safe Drinking Water Information System, July 2026.

How hard is the water in Peoria?

City-level hardness isn't published in a single federal dataset, but Illinois averages 120 PPM — "moderately hard" on the USGS scale. Your utility's water quality report lists Peoria'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 Peoria?

With 2 health-based violations 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 Peoria 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.