Aqua Illinois-Sun River Terrace, IL
Lead detected, under the action levels
Latest 90th-percentile lead: 2.4 ppb (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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Who runs the water here
Aqua Illinois-Sun River Terrace serves about 498 people through 166 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Kankakee County, Illinois. EPA system ID: IL0910720; phone on file: 224-602-6779. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is up 1.1 ppb from 1.3 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Aqua Illinois-Sun River Terrace is 11 ppb across 10 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2.4 ppb |
| 2025 | 1.3 ppb |
| 2025 | 11 ppb over 10 |
| 2024 | 1.9 ppb |
| 2024 | 6 ppb |
| 2023 | 2 ppb |
| 2023 | 2.7 ppb |
| 2022 | 3.9 ppb |
| 2019 | 2 ppb |
| 2016 | 1 ppb |
How Aqua Illinois-Sun River Terrace 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. Aqua Illinois-Sun River Terrace's 2.4 ppb sits at the 76th percentile in Illinois and the 77th nationally (higher means more lead).
Other water systems in Kankakee County
16 other systems share Kankakee County; 5 of them have a higher latest lead result than Aqua Illinois-Sun River Terrace. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Aqua Illinois-Kankakee | 80,000 | 1.9 ppb |
| Momence | 3,075 | 3.4 ppb |
| Herscher | 1,600 | 0 (not detected) |
| Pembroke Township | 1,410 | 4.1 ppb |
| St Anne | 1,200 | 0 (not detected) |
| Sunny Acres Mhp | 750 | 1.2 ppb |
| Hopkins Park | 579 | 4.5 ppb |
| Lake Shannon | 500 | 0 (not detected) |
| Buckingham | 300 | 3.3 ppb |
| Il Veterans Home-Manteno | 256 | - |
Your move
Test your own tap with a certified lab first-draw sample; Glenview, 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 Aqua Illinois-Sun River Terrace whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1500 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. Systems that went over once often dip back under; here is what that means.