Davis Junction, IL
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2024-2026). 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.
Who runs the water here
Davis Junction serves about 2,344 people through 699 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Ogle County, Illinois. EPA system ID: IL1410030; phone on file: 815-645-8000. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Davis Junction is 2.7 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2020 | 1.7 ppb |
| 2017 | 2.7 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. Davis Junction's reported as 0 (not detected) sits at the 42nd percentile in Illinois and the 31st nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Ogle County
20 other systems share Ogle County; 5 of them have a higher latest lead result than Davis Junction. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Rochelle | 9,446 | 2.7 ppb |
| Byron | 3,784 | 0 (not detected) |
| Oregon | 3,449 | 0 (not detected) |
| Mount Morris | 2,861 | 1.1 ppb |
| Polo | 2,355 | 0 (not detected) |
| Forreston | 1,338 | 1.2 ppb |
| Hillcrest | 1,224 | 0 (not detected) |
| Stillman Valley | 1,200 | 0 (not detected) |
| Lost Lake Utility District | 704 | 0 (not detected) |
| Creston | 627 | 0 (not detected) |
Next steps for Davis Junction, IL
Look up your address in Davis Junction'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 Davis Junction 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. Small systems behave differently: why small systems go over more often.