Valley Grove Water Users Association, MT
Lead detected, under the action levels
Latest 90th-percentile lead: 2 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.
Valley Grove Water Users Association at a glance
Valley Grove Water Users Association serves about 30 people through 12 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Missoula County, Montana. EPA system ID: MT0000490; phone on file: 406-239-4233. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is down 8 ppb from 10 ppb in the period ending 2019. The highest 90th-percentile result EPA holds for Valley Grove Water Users Association is 10 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2 ppb |
| 2019 | 10 ppb |
| 2016 | 0 (not detected) |
Where this result ranks
Of the 753 Montana systems with a lead result, the median latest reading is 1 ppb; 5 are over 15 ppb right now and 28 have gone over at some point. Valley Grove Water Users Association's 2 ppb sits at the 63rd percentile in Montana and the 69th nationally (higher means more lead).
Neighbouring systems
80 other systems share Missoula County; 12 of them have a higher latest lead result than Valley Grove Water Users Association. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Missoula Water | 68,200 | 2 ppb |
| Lolo Water And Sewer Dist | 3,315 | 2 ppb |
| Seeley Lake Water District | 1,575 | 4 ppb |
| El Mar Estates Msla Co Water | 1,350 | 1 ppb |
| Westview Mobile Home Park | 947 | 1 ppb |
| Phantom Hills Water System | 810 | 3 ppb |
| Travois Village Mobile Park | 702 | 2 ppb |
| Wye Area Water System | 512 | 1 ppb |
| Grant Creek Water Users Association Inc | 380 | 0 (not detected) |
| Katoonah Lodges | 258 | 3 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Lolo, MT 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 Valley Grove Water Users Association 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. Systems that went over once often dip back under; here is what that means.