Hardin County Water District #1, KY
Lead detected, under the action levels
Latest 90th-percentile lead: 3 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 Hardin County Water District #1
Hardin County Water District #1 serves about 30,230 people through 11,238 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Hardin County, Kentucky. EPA system ID: KY0470393; phone on file: 270-272-2094. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2022 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Hardin County Water District #1 is 4 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3 ppb |
| 2022 | 2 ppb |
| 2019 | 4 ppb |
| 2016 | 3 ppb |
Against other Kentucky systems
Of the 367 Kentucky systems with a lead result, the median latest reading is 0 ppb; 0 are over 15 ppb right now and 4 have gone over at some point. Hardin County Water District #1's 3 ppb sits at the 87th percentile in Kentucky and the 83rd nationally (higher means more lead).
Other water systems in Hardin County
3 other systems share Hardin County; 1 of them has a higher latest lead result than Hardin County Water District #1. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Hardin County Water District #2 | 76,326 | 6 ppb |
| Hardin Co. Water Dist #1/Ft. Knox | 23,600 | 2 ppb |
| Vine Grove Water Department | 6,703 | 1 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Radcliff, KY 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 Hardin County Water District #1 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.