Highway Estates Water Assn, ID
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 13 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. Under the current 15 ppb rule this is not an exceedance, but it is above the 10 ppb action level that takes over in Nov 2027. Test your own tap; filter if your result shows lead.
Who runs the water here
Highway Estates Water Assn serves about 65 people through 19 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Bonneville County, Idaho. EPA system ID: ID7100035; phone on file: 208-680-2403. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Highway Estates Water Assn's lead record
That is up 12 ppb from 1 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Highway Estates Water Assn is 13 ppb across 4 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 13 ppb over 10 |
| 2021 | 1 ppb |
| 2018 | 1 ppb |
| 2018 | 2 ppb |
How Highway Estates Water Assn compares
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. Highway Estates Water Assn's 13 ppb sits at the 99th percentile in Idaho and the 98th nationally (higher means more lead).
Neighbouring systems
32 other systems share Bonneville County; 0 of them have a higher latest lead result than Highway Estates Water Assn. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Idaho Falls City Of | 69,450 | 3 ppb |
| Falls Water Company Inc | 22,650 | 3 ppb |
| Ammon City Of | 17,338 | 0 (not detected) |
| Iona Water Dept | 2,717 | 1 ppb |
| Comore Loma | 1,626 | 1 ppb |
| Ucon City Of | 1,161 | 0 (not detected) |
| 3d Water Association | 680 | 1 ppb |
| Taylor Mountain Water And Sewer District | 600 | 0 (not detected) |
| J And K Water Corp | 370 | 3 ppb |
| Blackhawk Estates/Iron Rim | 270 | 3 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Idaho Falls, 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 Highway Estates Water Assn 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. This system is in the band the 2027 10 ppb rule changes.