Moose Mountain, ID
Lead detected, under the action levels
Latest 90th-percentile lead: 3 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
Moose Mountain serves about 27 people through 22 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Bannock County, Idaho. EPA system ID: ID6030089; phone on file: 208-317-2611. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2023 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Moose Mountain is 4 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3 ppb |
| 2023 | 2 ppb |
| 2020 | 2 ppb |
| 2017 | 2 ppb |
| 2017 | 3 ppb |
| 2016 | 4 ppb |
| 2016 | 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. Moose Mountain's 3 ppb sits at the 76th percentile in Idaho and the 81st nationally (higher means more lead).
Nearby utilities
22 other systems share Bannock County; 5 of them have a higher latest lead result than Moose Mountain. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Pocatello City Of | 58,231 | 5 ppb |
| Chubbuck City Of | 15,842 | 2 ppb |
| Mccammon City Of | 800 | 2 ppb |
| Inkom City Of | 792 | 1 ppb |
| Downey City Of | 586 | 2 ppb |
| Lava Hot Springs City Of | 386 | 2 ppb |
| Arimo City Of | 368 | 14 ppb |
| Tyhee And S And N Estates Water Assn | 300 | 2 ppb |
| Laceys Vista Acres Water Corp | 200 | 9 ppb |
| Caribou Acres | 150 | 5 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Inkom, 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 Moose Mountain 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. The lead result guide covers how utilities pick the homes they sample. The action level is dropping - the 10 ppb rule from 2027.