East Peoria, IL
Lead detected, under the action levels
Latest 90th-percentile lead: 7 ppb (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About East Peoria
East Peoria serves about 22,484 people through 8,241 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Tazewell County, Illinois. EPA system ID: IL1790200; phone on file: 309-427-7653. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
East Peoria's lead record
That is up 7 ppb from 0 ppb in the period ending 2026. The highest 90th-percentile result EPA holds for East Peoria is 12 ppb across 13 monitoring periods, none of them over 15 ppb (2 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 7 ppb |
| 2026 | 0 (not detected) |
| 2025 | 11 ppb over 10 |
| 2025 | 0 (not detected) |
| 2025 | 5.7 ppb |
| 2025 | 6.1 ppb |
| 2024 | 1.2 ppb |
| 2024 | 5.3 ppb |
| 2024 | 1.1 ppb |
| 2023 | 12 ppb over 10 |
| 2022 | 8 ppb |
| 2021 | 2.9 ppb |
| 2018 | 6.7 ppb |
Against other Illinois systems
Of the 1,744 Illinois systems with a lead result, the median latest reading is 0 ppb; 22 are over 15 ppb right now and 152 have gone over at some point. East Peoria's 7 ppb sits at the 93rd percentile in Illinois and the 95th nationally (higher means more lead).
Other water systems in Tazewell County
28 other systems share Tazewell County; 1 of them has a higher latest lead result than East Peoria. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Il American-Pekin | 31,731 | 1 ppb |
| Morton | 17,117 | 0 (not detected) |
| Washington | 14,793 | 0 (not detected) |
| North Tazewell Pwd | 7,625 | 5.1 ppb |
| Creve Coeur | 4,934 | 2.1 ppb |
| Mackinaw | 3,399 | 0 (not detected) |
| Marquette Heights | 2,974 | 1.02 ppb |
| Groveland Township Water District | 2,185 | 5.2 ppb |
| Tremont | 2,114 | 1.2 ppb |
| Delavan | 1,743 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; East Peoria, IL may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask East Peoria whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1400 ppb (copper action level 1,300 ppb).
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.