Choate Mhc, IL
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2026). 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.
About Choate Mhc
Choate Mhc serves about 533 people through 33 service connections, which makes it a small system under EPA's size classes. It is owned by the state and draws groundwater, in Union County, Illinois. EPA system ID: IL1815500; phone on file: 618-202-6113. They can tell you what your service line is made of and whether they pay to replace it.
Choate Mhc'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 Choate Mhc is 4.5 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2024 | 4.5 ppb |
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. Choate Mhc's reported as 0 (not detected) sits at the 21st percentile in Illinois and the 23rd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
8 other systems share Union County; 6 of them have a higher latest lead result than Choate Mhc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Anna | 4,910 | 1.7 ppb |
| Lick Creek Pwd | 2,365 | 0 (not detected) |
| Jonesboro | 1,799 | 0 (not detected) |
| Cobden | 1,267 | 4.1 ppb |
| Alto Pass Water District | 1,015 | 3 ppb |
| Shawnee Valley Pwd | 738 | 1 ppb |
| Dongola | 736 | 2.65 ppb |
| Anna-Jonesboro Water Commission | 28 | 2.64 ppb |
What to do in your house
Look up your address in Choate Mhc'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 Choate Mhc 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. A zero today does not rule out a jump later - the rules are tightening in 2027.