Loma County Water District, MT
Lead detected, under the action levels
Latest 90th-percentile lead: 1 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.
About Loma County Water District
Loma County Water District serves about 200 people through 121 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Chouteau County, Montana. EPA system ID: MT0002669; phone on file: 406-788-9853. 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 2017 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Loma County Water District is 1 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1 ppb |
| 2017 | 1 ppb |
Against other Montana systems
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. Loma County Water District's 1 ppb sits at the 55th percentile in Montana and the 52nd nationally (higher means more lead).
Nearby utilities
10 other systems share Chouteau County; 5 of them have a higher latest lead result than Loma County Water District. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Fort Benton City Of | 1,500 | 2 ppb |
| Big Sandy Town Of | 608 | 0 (not detected) |
| Highwood County Water And Sewer District | 280 | 2 ppb |
| Geraldine Town Of | 260 | 3 ppb |
| Carter Chouteau Co Water Dist | 150 | 0 (not detected) |
| South Chouteau County Water Dist | 80 | 2 ppb |
| Sunny Brook Colony | 80 | 0 (not detected) |
| Twin Hills Colony Inc | 78 | 0 (not detected) |
| North Geraldine Water System | 50 | 0 (not detected) |
| Hawarden Square Butte Water | 50 | 2 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Loma, 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 Loma County Water District 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. Size matters more than most people expect: small vs large water systems.