Indiana American Water - West Lafayette, 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.
Who runs the water here
Indiana American Water - West Lafayette serves about 35,533 people through 14,213 service connections, which makes it a large system under EPA's size classes. It is privately owned and draws groundwater, in Tippecanoe County, Indiana. EPA system ID: IN5279020; phone on file: 317-885-2408. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2023 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Indiana American Water - West Lafayette is 1 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2023 | 1 ppb |
| 2020 | 0 (not detected) |
| 2017 | 0 (not detected) |
Where this result ranks
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. Indiana American Water - West Lafayette's reported as 0 (not detected) sits at the 33rd percentile in Indiana 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
10 other systems share Tippecanoe County; 3 of them have a higher latest lead result than Indiana American Water - West Lafayette. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Lafayette Water Works | 70,835 | 0.47 ppb |
| Purdue Univ. Water Works | 50,000 | 0 (not detected) |
| Battle Ground Water District | 1,940 | 0 (not detected) |
| Dayton Water Utility | 1,420 | 0 (not detected) |
| Clarks Hill Water Works | 660 | 1.61 ppb |
| Wildcat Highlands | 360 | 0 (not detected) |
| Shadeland Mobile Home Park | 200 | 0 (not detected) |
| Modernaire Trailer Court | 105 | 0 (not detected) |
| Royal Oaks Estates Llc | 95 | 0 (not detected) |
| Kings Ridge Homeowners Association | 90 | 0.63 ppb |
Your move
Look up your address in Indiana American Water - West Lafayette'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 Indiana American Water - West Lafayette 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. A zero today does not rule out a jump later - the rules are tightening in 2027.