Oak Grove Mhp - Rock Island County, 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.
Oak Grove Mhp - Rock Island County at a glance
Oak Grove Mhp - Rock Island County serves about 138 people through 55 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Rock Island County, Illinois. EPA system ID: IL1617785; phone on file: 563-551-6347. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is down 12 ppb from 12 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Oak Grove Mhp - Rock Island County is 12 ppb across 8 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2024 | 12 ppb over 10 |
| 2023 | 5 ppb |
| 2022 | 5.9 ppb |
| 2021 | 5 ppb |
| 2020 | 4.7 ppb |
| 2020 | 8.5 ppb |
| 2016 | 6.9 ppb |
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. Oak Grove Mhp - Rock Island County's reported as 0 (not detected) sits at the 6th percentile in Illinois and the 12th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
46 other systems share Rock Island County; 28 of them have a higher latest lead result than Oak Grove Mhp - Rock Island County. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Moline | 44,500 | 1.3 ppb |
| Rock Island | 39,018 | 0 (not detected) |
| East Moline | 21,374 | 16 ppb |
| Rock Island Arsenal, Us Army | 7,800 | 0 (not detected) |
| Silvis | 7,473 | 4.1 ppb |
| Milan | 4,945 | 7.18 ppb |
| Coal Valley | 3,873 | 0 (not detected) |
| Carbon Cliff | 2,134 | 0 (not detected) |
| Hampton | 1,863 | 1.3 ppb |
| Port Byron | 1,668 | 6 ppb |
Next steps for West Milan, IL
Look up your address in Oak Grove Mhp - Rock Island County'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 Oak Grove Mhp - Rock Island County whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1350 ppb (copper action level 1,300 ppb).
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.