Circle H Water Inc, MT
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.
About Circle H Water Inc
Circle H Water Inc serves about 215 people through 88 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: MT0004446; phone on file: 509-842-8440. 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 2023 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Circle H Water Inc is 3 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1 ppb |
| 2023 | 1 ppb |
| 2017 | 3 ppb |
| 2017 | 3 ppb |
How Circle H Water Inc compares
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. Circle H Water Inc's 1 ppb sits at the 56th percentile in Montana and the 52nd nationally (higher means more lead).
Other water systems in Missoula County
80 other systems share Missoula County; 23 of them have a higher latest lead result than Circle H Water Inc. 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 |
What to do in your house
Test your own tap with a certified lab first-draw sample; Missoula, 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 Circle H Water Inc 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. The action level is dropping - the 10 ppb rule from 2027.