Wm W Fox Development Center, IL
Exceeded the action level in the past
Latest 90th-percentile lead: 2.5 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. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Who runs the water here
Wm W Fox Development Center serves about 174 people through 4 service connections, which makes it a very small system under EPA's size classes. It is owned by the state and draws groundwater, in Livingston County, Illinois. EPA system ID: IL1055520; phone on file: 774-249-6250. They can tell you what your service line is made of and whether they pay to replace it.
Wm W Fox Development Center's lead record
That is down 41.5 ppb from 44 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Wm W Fox Development Center is 44 ppb across 5 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2.5 ppb |
| 2025 | 44 ppb over 15 |
| 2022 | 2.8 ppb |
| 2019 | 5 ppb |
| 2016 | 10 ppb |
How Wm W Fox Development Center compares
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. Wm W Fox Development Center's 2.5 ppb sits at the 76th percentile in Illinois and the 77th nationally (higher means more lead).
Neighbouring systems
16 other systems share Livingston County; 1 of them has a higher latest lead result than Wm W Fox Development Center. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Il American-Pontiac | 11,864 | 2 ppb |
| Dwight | 4,400 | 0 (not detected) |
| Fairbury | 3,633 | 0 (not detected) |
| Pontiac Correctional Center | 1,665 | 1.11 ppb |
| Forrest | 1,225 | 0 (not detected) |
| Chatsworth | 1,200 | 0 (not detected) |
| Flanagan | 1,070 | 3.6 ppb |
| Odell | 1,014 | 0 (not detected) |
| Cullom | 563 | 0 (not detected) |
| Cornell | 500 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Dwight, 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 Wm W Fox Development Center 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. The lead result guide covers how utilities pick the homes they sample. More in what a past exceedance means today.