Menard Rural Water Coop, IL
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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 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.
Menard Rural Water Coop at a glance
Menard Rural Water Coop serves about 753 people through 301 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Menard County, Illinois. EPA system ID: IL1290010; phone on file: 217-632-7751. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Menard Rural Water Coop is 1 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 1 ppb |
| 2019 | 0 (not detected) |
| 2016 | 0 (not detected) |
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. Menard Rural Water Coop's reported as 0 (not detected) sits at the 27th percentile in Illinois and the 25th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Menard County
6 other systems share Menard County; 0 of them have a higher latest lead result than Menard Rural Water Coop. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Petersburg | 4,725 | 0 (not detected) |
| Athens | 4,575 | 0 (not detected) |
| Tallula | 868 | 0 (not detected) |
| Greenview | 858 | 0 (not detected) |
| Oakford | 234 | 0 (not detected) |
| Old Salem Chautauqua | 128 | 0 (not detected) |
Next steps for Petersburg, IL
Look up your address in Menard Rural Water Coop'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 Menard Rural Water Coop 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. Small systems behave differently: why small systems go over more often.