Worden, IL
Exceeded the action level in the past
Latest 90th-percentile lead: 1 ppb (monitoring period 2025-2027). 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.
Worden at a glance
Worden serves about 1,096 people through 458 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 surface water, in Madison County, Illinois. EPA system ID: IL1191200; phone on file: 618-978-3226. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2025 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Worden is 18 ppb across 7 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2027 | 1 ppb |
| 2025 | 2 ppb |
| 2024 | 3 ppb |
| 2021 | 3 ppb |
| 2020 | 2 ppb |
| 2019 | 3 ppb |
| 2016 | 18 ppb over 15 |
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. Worden's 1 ppb sits at the 60th percentile in Illinois and the 54th nationally (higher means more lead).
Other water systems in Madison County
35 other systems share Madison County; 15 of them have a higher latest lead result than Worden. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Il American-Alton | 46,127 | 3 ppb |
| Il American-Granite City | 33,572 | 6 ppb |
| Collinsville | 30,616 | 0 (not detected) |
| Edwardsville | 26,808 | 0 (not detected) |
| Troy | 16,962 | 0 (not detected) |
| Bethalto | 15,210 | 1.2 ppb |
| Glen Carbon | 12,618 | 0 (not detected) |
| Highland | 10,674 | 0 (not detected) |
| Wood River | 10,464 | 0 (not detected) |
| Maryville | 10,150 | 2 ppb |
Next steps for Greenville, IL
Test your own tap with a certified lab first-draw sample; Greenville, 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 Worden whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1370 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Why an old exceedance still matters: over the limit before, under it now.