Indiana American Water - Noblesville, IN
Lead detected, under the action levels
Latest 90th-percentile lead: 3 ppb (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. 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 Indiana American Water - Noblesville
Indiana American Water - Noblesville serves about 45,575 people through 18,230 service connections, which makes it a large system under EPA's size classes. It is privately owned and draws groundwater, in Hamilton County, Indiana. EPA system ID: IN5229015; 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.
Lead results over time
That is down 2 ppb from 5 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Indiana American Water - Noblesville is 5 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3 ppb |
| 2023 | 5 ppb |
| 2020 | 2 ppb |
| 2017 | 3 ppb |
Against other Indiana systems
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 - Noblesville's 3 ppb sits at the 80th percentile in Indiana and the 83rd nationally (higher means more lead).
Other water systems in Hamilton County
13 other systems share Hamilton County; 2 of them have a higher latest lead result than Indiana American Water - Noblesville. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Carmel Water Department | 99,927 | 2.94 ppb |
| Citizens Water Of Westfield, Llc | 61,493 | 3.09 ppb |
| Cicero Water Department | 5,607 | 6.99 ppb |
| Indiana American Water - Sheridan | 4,435 | 2 ppb |
| Arcadia Water Department | 1,515 | 1.13 ppb |
| Atlanta Water Department | 735 | - |
| Carmel Clay Water | 393 | 0 (not detected) |
| Suburban Estates, Llc | 350 | 0 (not detected) |
| Hamilton County Regional Utility | 125 | 0 (not detected) |
| Indiana Academy | 113 | 2.2 ppb |
Next steps for Greenwood, IN
Test your own tap with a certified lab first-draw sample; Greenwood, IN 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 Indiana American Water - Noblesville 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. The action level is dropping - the 10 ppb rule from 2027.