Walnut Grove Mhc, IL
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Walnut Grove Mhc serves about 40 people through 20 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Champaign County, Illinois. EPA system ID: IL0195425; phone on file: 618-889-8995. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
The highest 90th-percentile result EPA holds for Walnut Grove Mhc is 0 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 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. Walnut Grove Mhc's reported as 0 (not detected) sits at the 0th percentile in Illinois and the 2nd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
28 other systems share Champaign County; 11 of them have a higher latest lead result than Walnut Grove Mhc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Il American-Champaign | 150,000 | 0 (not detected) |
| Rantoul | 13,000 | 2.2 ppb |
| U Of I-Champaign | 13,000 | 2.3 ppb |
| Mahomet | 7,000 | 0 (not detected) |
| Sangamon Valley Pwd | 5,300 | 0 (not detected) |
| Il American-Tolono | 3,604 | 1 ppb |
| Il American-Fisher | 2,026 | 0 (not detected) |
| Aqua Illinois-Philo | 1,378 | 0 (not detected) |
| Homer | 1,200 | 0 (not detected) |
| Thomasboro | 1,066 | 0 (not detected) |
What to do in your house
Look up your address in Walnut Grove Mhc's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Walnut Grove Mhc 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Small systems behave differently: why small systems go over more often.