New Windsor, IL
Lead detected, under the action levels
Latest 90th-percentile lead: 6.2 ppb (monitoring period 2021-2023). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About New Windsor
New Windsor serves about 740 people through 345 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 Mercer County, Illinois. EPA system ID: IL1310500; phone on file: 309-667-2377. Call that number and ask whether your address has a lead, galvanized or unknown service line.
New Windsor's lead record
That is up 6.2 ppb from 0 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for New Windsor is 6.2 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 6.2 ppb |
| 2020 | 0 (not detected) |
| 2017 | 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. New Windsor's 6.2 ppb sits at the 90th percentile in Illinois and the 94th nationally (higher means more lead).
Nearby utilities
13 other systems share Mercer County; 1 of them has a higher latest lead result than New Windsor. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Aledo | 3,470 | 3 ppb |
| Viola | 869 | 0 (not detected) |
| Sherrard | 785 | 1.9 ppb |
| Fyre Lake Water Company | 760 | 2.2 ppb |
| Keithsburg | 747 | 0 (not detected) |
| Matherville | 651 | 11.6 ppb |
| New Boston | 613 | 0 (not detected) |
| Forrest Brooke Mhp | 491 | - |
| Joy | 377 | 1.7 ppb |
| North Henderson | 172 | 1.3 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; New Windsor, 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 New Windsor 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. Size matters more than most people expect: small vs large water systems.