Rend Lake Inter-City Water System, IL
Exceeded the action level in the past
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 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
Rend Lake Inter-City Water System serves about 3,650 people through 1,460 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 Franklin County, Illinois. EPA system ID: IL0555100; phone on file: 618-439-4394. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Rend Lake Inter-City Water System'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 Rend Lake Inter-City Water System is 34.6 ppb across 4 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2018 | 34.6 ppb over 15 |
How Rend Lake Inter-City Water System compares
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. Rend Lake Inter-City Water System's reported as 0 (not detected) sits at the 45th percentile in Illinois and the 34th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
20 other systems share Franklin County; 1 of them has a higher latest lead result than Rend Lake Inter-City Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| West Frankfort | 8,650 | 0 (not detected) |
| Benton | 8,104 | 0 (not detected) |
| Christopher | 3,072 | 0 (not detected) |
| Sesser | 2,556 | 3.27 ppb |
| Greenwood-Creek Nation Water Company | 2,530 | 0 (not detected) |
| Ewing-Ina Water Commission | 2,393 | 0 (not detected) |
| Akin Water District | 2,368 | 0 (not detected) |
| Zeigler | 1,774 | 0 (not detected) |
| Valier | 1,182 | 0 (not detected) |
| Royalton | 1,118 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Benton, 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 Rend Lake Inter-City Water System 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. More in what a past exceedance means today.