Deer Creek, IL
Lead detected, under the action levels
Latest 90th-percentile lead: 1.2 ppb (monitoring period 2025-2027). 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 Deer Creek
Deer Creek serves about 647 people through 346 service connections, which makes it a small 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: IL1794320; phone on file: 309-447-6749. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is up 1.2 ppb from 0 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Deer Creek is 1.2 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2027 | 1.2 ppb |
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2016 | 0 (not detected) |
Where this result ranks
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. Deer Creek's 1.2 ppb sits at the 63rd percentile in Illinois and the 59th nationally (higher means more lead).
Other water systems in Tazewell County
28 other systems share Tazewell County; 11 of them have a higher latest lead result than Deer Creek. 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 |
| East Peoria | 22,484 | 7 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 |
Next steps for Deer Creek, IL
Test your own tap with a certified lab first-draw sample; Deer Creek, 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 Deer Creek whether it covers that cost before hiring anyone - many utilities now do.
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. What a 90th-percentile result does and does not tell you: how to read a lead result. Size matters more than most people expect: small vs large water systems.