West Shore Park Subdivision, IL
Exceeded the action level in the past
Latest 90th-percentile lead: 2.7 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. 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.
About West Shore Park Subdivision
West Shore Park Subdivision serves about 590 people through 173 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Lake County, Illinois. EPA system ID: IL0977370; phone on file: 847-257-5507. They can tell you what your service line is made of and whether they pay to replace it.
West Shore Park Subdivision's lead record
That is down 13.1 ppb from 15.8 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for West Shore Park Subdivision is 15.8 ppb across 5 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2.7 ppb |
| 2025 | 15.8 ppb over 15 |
| 2024 | 9.62 ppb |
| 2021 | 0 (not detected) |
| 2018 | 0 (not detected) |
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. West Shore Park Subdivision's 2.7 ppb sits at the 78th percentile in Illinois and the 79th nationally (higher means more lead).
Nearby utilities
103 other systems share Lake County; 33 of them have a higher latest lead result than West Shore Park 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 |
What to do in your house
Test your own tap with a certified lab first-draw sample; Mundelein, 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 West Shore Park 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. The lead result guide covers how utilities pick the homes they sample. More in what a past exceedance means today.