New Baden, IL
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 12.6 ppb (monitoring period 2025-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Under the current 15 ppb rule this is not an exceedance, but it is above the 10 ppb action level that takes over in Nov 2027. Test your own tap; filter if your result shows lead.
About New Baden
New Baden serves about 4,178 people through 1,500 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Clinton County, Illinois. EPA system ID: IL0274700; phone on file: 618-588-3813. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 12.6 ppb from 0 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for New Baden is 12.6 ppb across 5 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 12.6 ppb over 10 |
| 2025 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2018 | 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 Baden's 12.6 ppb sits at the 98th percentile in Illinois and the 98th nationally (higher means more lead).
Other water systems in Clinton County
19 other systems share Clinton County; 0 of them have a higher latest lead result than New Baden. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Breese | 4,772 | 0 (not detected) |
| Carlyle | 3,373 | 11 ppb |
| Trenton | 2,742 | 0 (not detected) |
| Aviston | 2,545 | 0 (not detected) |
| Clinton County East Pwd | 1,950 | 0 (not detected) |
| Carlyle North Water Company, Inc. | 1,850 | 0 (not detected) |
| Carlyle Southwest Pwd | 1,815 | 0 (not detected) |
| St Rose Pwd | 1,688 | 0 (not detected) |
| Germantown | 1,537 | 0 (not detected) |
| Centralia Correctional Site | 1,397 | - |
What to do in your house
Test your own tap with a certified lab first-draw sample; New Baden, 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 Baden 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. This system is in the band the 2027 10 ppb rule changes.