West Brooklyn, IL
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2028). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Who runs the water here
West Brooklyn serves about 131 people through 72 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Lee County, Illinois. EPA system ID: IL1030550; phone on file: 815-910-3942. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
West Brooklyn's lead record
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for West Brooklyn is 25.3 ppb across 10 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2028 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 25.3 ppb over 15 |
| 2016 | 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. West Brooklyn's reported as 0 (not detected) sits at the 5th 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.
Other water systems in Lee County
14 other systems share Lee County; 6 of them have a higher latest lead result than West Brooklyn. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Dixon | 15,096 | 0 (not detected) |
| Woodhaven | 4,100 | 2.5 ppb |
| Amboy | 2,500 | 9.3 ppb |
| Dixon Correctional Center | 1,038 | 0 (not detected) |
| Ashton | 967 | 6.33 ppb |
| Franklin Grove | 896 | 0 (not detected) |
| Paw Paw | 830 | 0 (not detected) |
| White Oaks Estates Water Assoc., Inc. | 410 | 0 (not detected) |
| Rock River Estates Mhp | 400 | 0 (not detected) |
| Sublette | 380 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; West Brooklyn, 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 West Brooklyn 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. More in what a past exceedance means today.