Robinson Correctional Center, IL
Lead detected, under the action levels
Latest 90th-percentile lead: 1.6 ppb (monitoring period 2025-2025). 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.
Robinson Correctional Center at a glance
Robinson Correctional Center serves about 1,085 people through 21 service connections, which makes it a small system under EPA's size classes. It is owned by the state and draws groundwater, in Crawford County, Illinois. EPA system ID: IL0330010; phone on file: 217-925-5566. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is down 1.2 ppb from 2.8 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Robinson Correctional Center is 2.8 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.6 ppb |
| 2025 | 2.8 ppb |
| 2024 | 1.4 ppb |
| 2024 | 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. Robinson Correctional Center's 1.6 ppb sits at the 68th percentile in Illinois and the 65th nationally (higher means more lead).
Neighbouring systems
6 other systems share Crawford County; 2 of them have a higher latest lead result than Robinson Correctional Center. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Robinson-Palestine Water Commission | 11,331 | 6.2 ppb |
| Hardinville Water Company | 3,403 | 7.18 ppb |
| Oblong | 2,321 | 0 (not detected) |
| Eaton Pwd | 1,655 | 0 (not detected) |
| Hutsonville | 613 | 0 (not detected) |
| Flat Rock | 325 | 0 (not detected) |
Next steps for Dieterich, IL
Test your own tap with a certified lab first-draw sample; Dieterich, 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 Robinson Correctional 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. 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.