Hilldale Manor Subdivision, IL
Lead detected, under the action levels
Latest 90th-percentile lead: 1.6 ppb (monitoring period 2022-2024). 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.
About Hilldale Manor Subdivision
Hilldale Manor Subdivision serves about 414 people through 139 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Lake County, Illinois. EPA system ID: IL0975700; phone on file: 847-973-0023. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 1.6 ppb from 0 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Hilldale Manor Subdivision is 1.6 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1.6 ppb |
| 2021 | 0 (not detected) |
| 2018 | 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. Hilldale Manor Subdivision's 1.6 ppb sits at the 68th percentile in Illinois and the 65th nationally (higher means more lead).
Other water systems in Lake County
103 other systems share Lake County; 43 of them have a higher latest lead result than Hilldale Manor Subdivision. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Waukegan | 87,149 | 10 ppb |
| Vernon Hills - Lake Co Pw | 33,207 | 0 (not detected) |
| Mundelein | 31,500 | 4.3 ppb |
| Gurnee | 30,193 | 0.3 ppb |
| Highland Park | 30,176 | 0 (not detected) |
| Round Lake Beach | 27,200 | 0 (not detected) |
| Zion | 24,442 | 11.2 ppb |
| Great Lakes Naval Training Station | 23,000 | 0 (not detected) |
| Grayslake | 21,248 | 11 ppb |
| Libertyville | 20,500 | 5.61 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Fox Lake, 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 Hilldale Manor Subdivision 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. Size matters more than most people expect: small vs large water systems.