American Water Oper And Maintenance, Llc, IL
Lead reported as not detected
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 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
American Water Oper And Maintenance, Llc at a glance
American Water Oper And Maintenance, Llc serves about 6,779 people through 286 service connections, which makes it a medium-sized system under EPA's size classes. It is federally owned and draws surface water, in St. Clair County, Illinois. EPA system ID: IL1635237; phone on file: 618-744-9631. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is down 6 ppb from 6 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for American Water Oper And Maintenance, Llc is 6 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2023 | 6 ppb |
| 2020 | 5 ppb |
| 2017 | 0 (not detected) |
Against other Illinois systems
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. American Water Oper And Maintenance, Llc's reported as 0 (not detected) sits at the 49th percentile in Illinois and the 36th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
23 other systems share St. Clair County; 8 of them have a higher latest lead result than American Water Oper And Maintenance, Llc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Il American-East St Louis | 131,368 | 3 ppb |
| O Fallon | 46,603 | 0 (not detected) |
| Caseyville | 13,798 | 0 (not detected) |
| Cahokia Heights | 12,528 | 0 (not detected) |
| Mascoutah | 8,759 | 4.9 ppb |
| Lebanon | 4,714 | 2.1 ppb |
| Freeburg | 4,707 | 1 ppb |
| Dupo | 4,684 | 0 (not detected) |
| Smithton | 4,381 | 0 (not detected) |
| Millstadt | 4,071 | 0 (not detected) |
Your move
Look up your address in American Water Oper And Maintenance, Llc's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask American Water Oper And Maintenance, Llc 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. A zero today does not rule out a jump later - the rules are tightening in 2027.