Dupont Water Company, IN
Lead detected, under the action levels
Latest 90th-percentile lead: 3.26 ppb (monitoring period 2023-2025). 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 Dupont Water Company
Dupont Water Company serves about 3,865 people through 1,546 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 Jennings County, Indiana. EPA system ID: IN5240004; phone on file: 812-592-7957. They can tell you what your service line is made of and whether they pay to replace it.
Dupont Water Company's lead record
Against the period ending 2022 (2.8 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Dupont Water Company is 3.26 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3.26 ppb |
| 2022 | 2.8 ppb |
| 2021 | 0 (not detected) |
| 2020 | 1.4 ppb |
| 2018 | 2.6 ppb |
How Dupont 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. Dupont Water Company's 3.26 ppb sits at the 82nd percentile in Indiana and the 84th nationally (higher means more lead).
Neighbouring systems
7 other systems share Jennings County; 2 of them have a higher latest lead result than Dupont Water Company. 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 |
| Jennings Northwest Regional Utility | 2,955 | 0 (not detected) |
| Hayden Water Association | 2,395 | 2.43 ppb |
| Burnt Pines Water Association | 900 | 1.72 ppb |
| Vernon Water Department | 538 | 8.58 ppb |
| Muscatatuck Urban Training Center | 40 | 11.09 ppb |
Next steps for Commiskey, IN
Test your own tap with a certified lab first-draw sample; Commiskey, 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 Dupont 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. What a 90th-percentile result does and does not tell you: how to read a lead result. The action level is dropping - the 10 ppb rule from 2027.