Western Rockcastle Water Assoc, KY
Lead detected, under the action levels
Latest 90th-percentile lead: 2.17 ppb (monitoring period 2024-2026). 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
Western Rockcastle Water Assoc serves about 12,623 people through 4,526 service connections, which makes it a large system under EPA's size classes. It is privately owned and draws surface water, in Rockcastle County, Kentucky. EPA system ID: KY1020891; phone on file: 606-256-8283. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is down 3.83 ppb from 6 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Western Rockcastle Water Assoc is 6 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2.17 ppb |
| 2023 | 6 ppb |
| 2020 | 0 (not detected) |
| 2017 | 4 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. Western Rockcastle Water Assoc's 2.17 ppb sits at the 76th percentile in Kentucky and the 74th nationally (higher means more lead).
Other water systems in Rockcastle County
3 other systems share Rockcastle County; 1 of them has a higher latest lead result than Western Rockcastle Water Assoc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mt Vernon Water Works | 4,951 | 3 ppb |
| Kentucky American Water - Eastern Rockca | 2,165 | 0 (not detected) |
| Brodhead Water Works | 1,613 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Mt Vernon, 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 Western Rockcastle Water Assoc 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Size matters more than most people expect: small vs large water systems.