Hayden Water Association, IN
Lead detected, under the action levels
Latest 90th-percentile lead: 2.43 ppb (monitoring period 2025-2025). 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 Hayden Water Association
Hayden Water Association serves about 2,395 people through 997 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Jennings County, Indiana. EPA system ID: IN5240005; phone on file: 812-346-6311. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
The highest 90th-percentile result EPA holds for Hayden Water Association is 2.43 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2.43 ppb |
How Hayden Water Association 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. Hayden Water Association's 2.43 ppb sits at the 72nd percentile in Indiana and the 77th nationally (higher means more lead).
Neighbouring systems
7 other systems share Jennings County; 3 of them have a higher latest lead result than Hayden Water Association. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Jennings Water, Inc. | 8,370 | 1.85 ppb |
| North Vernon Water Department | 6,500 | 1.93 ppb |
| Dupont Water Company | 3,865 | 3.26 ppb |
| Jennings Northwest Regional Utility | 2,955 | 0 (not detected) |
| Burnt Pines Water Association | 900 | 1.72 ppb |
| Vernon Water Department | 538 | 8.58 ppb |
| Muscatatuck Urban Training Center | 40 | 11.09 ppb |
Your move
Test your own tap with a certified lab first-draw sample; North Vernon, 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 Hayden Water Association 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Systems that went over once often dip back under; here is what that means.