Aqua Indiana Water Company, IN
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 Aqua Indiana Water Company
Aqua Indiana Water Company serves about 1,350 people through 525 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Lake County, Indiana. EPA system ID: IN5245017; phone on file: 219-759-3215. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Aqua Indiana Water Company is 3.6 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2020 | 1 ppb |
| 2017 | 3.6 ppb |
How Aqua Indiana Water Company compares
Of the 687 Indiana systems with a lead result, the median latest reading is 1.31 ppb; 6 are over 15 ppb right now and 36 have gone over at some point. Aqua Indiana Water Company's reported as 0 (not detected) sits at the 21st percentile in Indiana and the 28th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Lake County
27 other systems share Lake County; 24 of them have a higher latest lead result than Aqua Indiana Water Company. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Indiana American Water - Northwest | 210,510 | 3 ppb |
| Hammond Water Works Department | 78,384 | 3 ppb |
| Crown Point Water Works | 30,000 | 0.7 ppb |
| Schererville Water Department | 30,000 | 1 ppb |
| East Chicago Water Works | 26,370 | 8 ppb |
| St. John Municipal Water Utility | 25,700 | 2.9 ppb |
| Highland Water Works | 23,984 | 2.4 ppb |
| Munster Water Company | 23,894 | 2 ppb |
| Griffith Water Department | 16,893 | 1.01 ppb |
| Dyer Water Department | 16,800 | 9.9 ppb |
Your move
Look up your address in Aqua Indiana Water Company'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 Aqua Indiana Water Company 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.