King Hill Domestic Water And Sewer, ID
Lead detected, under the action levels
Latest 90th-percentile lead: 1 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.
Who runs the water here
King Hill Domestic Water And Sewer serves about 87 people through 37 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Elmore County, Idaho. EPA system ID: ID4200026; phone on file: 208-591-1139. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2021 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for King Hill Domestic Water And Sewer is 2 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1 ppb |
| 2021 | 1 ppb |
| 2018 | 2 ppb |
Where this result ranks
Of the 763 Idaho systems with a lead result, the median latest reading is 1 ppb; 3 are over 15 ppb right now and 46 have gone over at some point. King Hill Domestic Water And Sewer's 1 ppb sits at the 42nd percentile in Idaho and the 51st nationally (higher means more lead).
Nearby utilities
22 other systems share Elmore County; 10 of them have a higher latest lead result than King Hill Domestic Water And Sewer. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mountain Home, City Of | 14,651 | 0 (not detected) |
| Mountain Home Air Force Base | 7,500 | 4 ppb |
| Glenns Ferry City Of | 1,282 | 0 (not detected) |
| Trinity Estates Water Users Assn | 250 | 7 ppb |
| Mellen Subd Water Dist | 250 | 5 ppb |
| Canyon Creek Mobile Home Park | 243 | 3 ppb |
| Summerwind Water Users | 192 | 0 (not detected) |
| Sawtooth Estates Water Users | 175 | 9 ppb |
| Blue Sage Subdivision | 112 | 0 (not detected) |
| Simplot Livestock Company Grandview | 100 | 2 ppb |
Next steps for King Hill, ID
Test your own tap with a certified lab first-draw sample; King Hill, ID 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 King Hill Domestic Water And Sewer 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. The action level is dropping - the 10 ppb rule from 2027.