Great Lakes Naval Training Station, 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.
About Great Lakes Naval Training Station
Great Lakes Naval Training Station serves about 23,000 people through 976 service connections, which makes it a large system under EPA's size classes. It is federally owned and draws surface water, in Lake County, Illinois. EPA system ID: IL0975227; phone on file: 847-688-5395. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Great Lakes Naval Training Station's lead record
Against the period ending 2025 (0.8 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Great Lakes Naval Training Station is 1.5 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0.8 ppb |
| 2023 | 0 (not detected) |
| 2020 | 1.2 ppb |
| 2017 | 1.5 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. Great Lakes Naval Training Station's reported as 0 (not detected) sits at the 53rd percentile in Illinois and the 39th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
103 other systems share Lake County; 63 of them have a higher latest lead result than Great Lakes Naval Training Station. 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 |
| Grayslake | 21,248 | 11 ppb |
| Libertyville | 20,500 | 5.61 ppb |
| Lake Zurich | 19,759 | 4.67 ppb |
Your move
Look up your address in Great Lakes Naval Training Station'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 Great Lakes Naval Training Station 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.