Nortonville Water Works, KY
Lead detected, under the action levels
Latest 90th-percentile lead: 2 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.
Nortonville Water Works at a glance
Nortonville Water Works serves about 2,611 people through 833 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 Hopkins County, Kentucky. EPA system ID: KY0540328; phone on file: 270-841-7739. 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 up 2 ppb from 0 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Nortonville Water Works is 2 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 2 ppb |
| 2021 | 0 (not detected) |
| 2018 | 2 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. Nortonville Water Works's 2 ppb sits at the 65th percentile in Kentucky and the 72nd nationally (higher means more lead).
Other water systems in Hopkins County
9 other systems share Hopkins County; 0 of them have a higher latest lead result than Nortonville Water Works. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Madisonville Light & Water | 28,102 | 0 (not detected) |
| South Hopkins Water District | 8,440 | 0 (not detected) |
| Nebo Water District | 4,702 | 0 (not detected) |
| North Hopkins Water District | 3,725 | 0 (not detected) |
| Dawson Springs Water & Sewer | 2,631 | 2 ppb |
| Hanson Water System | 2,157 | 0 (not detected) |
| White Plains Water System | 1,871 | 0 (not detected) |
| Earlington Water & Sewer | 1,708 | 0 (not detected) |
| Mortons Gap Water Department | 1,485 | 0 (not detected) |
Next steps for Nortonville, KY
Test your own tap with a certified lab first-draw sample; Nortonville, 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 Nortonville Water Works 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. Size matters more than most people expect: small vs large water systems.