North Dearborn Water Authority, IN
Lead detected, under the action levels
Latest 90th-percentile lead: 2.13 ppb (monitoring period 2022-2024). 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.
Who runs the water here
North Dearborn Water Authority serves about 5,775 people through 2,310 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Dearborn County, Indiana. EPA system ID: IN5215008; phone on file: 812-576-2177. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2021 (2.75 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for North Dearborn Water Authority is 3.5 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 2.13 ppb |
| 2021 | 2.75 ppb |
| 2018 | 3.5 ppb |
How North Dearborn Water Authority 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. North Dearborn Water Authority's 2.13 ppb sits at the 69th percentile in Indiana and the 74th nationally (higher means more lead).
Other water systems in Dearborn County
8 other systems share Dearborn County; 4 of them have a higher latest lead result than North Dearborn Water Authority. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Tri-Township Water Corporation | 10,435 | 3.58 ppb |
| Aurora Utilities | 6,415 | 2.3 ppb |
| Valley Rural Utility Company | 5,529 | 2.58 ppb |
| L-M-S Conservancy District | 5,375 | 1.77 ppb |
| City Of Greendale Utilities | 5,092 | 1.28 ppb |
| Lawrenceburg Municipal Utilities | 5,000 | 1.55 ppb |
| Dillsboro Water Works | 2,000 | 4.42 ppb |
| Hogan Water Corporation | 1,238 | 0 (not detected) |
Next steps for West Harrison, IN
Test your own tap with a certified lab first-draw sample; West Harrison, 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 North Dearborn Water Authority 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. Systems that went over once often dip back under; here is what that means.