Cooney Enterprises, MT
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Cooney Enterprises at a glance
Cooney Enterprises serves about 50 people through 21 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Carbon County, Montana. EPA system ID: MT0003670; phone on file: 406-579-5586. They can tell you what your service line is made of and whether they pay to replace it.
Cooney Enterprises's lead record
That is down 3 ppb from 3 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Cooney Enterprises is 3 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2023 | 3 ppb |
| 2019 | 0 (not detected) |
| 2016 | 3 ppb |
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. Cooney Enterprises's reported as 0 (not detected) sits at the 7th percentile in Montana and the 3rd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Carbon County
11 other systems share Carbon County; 9 of them have a higher latest lead result than Cooney Enterprises. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Red Lodge Water Dept | 2,000 | 3 ppb |
| Bridger Town Of | 750 | 4 ppb |
| Joliet Town Of | 600 | 3 ppb |
| Fromberg Town Of | 498 | 5 ppb |
| Roberts Wua Carbon Co Water And Sewer | 300 | 0 (not detected) |
| Belfry Carbon Co Water And Sewer Dist | 205 | 1 ppb |
| Bearcreek Municipal Water Sys | 200 | 3 ppb |
| Vwa Services | 93 | 0 (not detected) |
| Rio Vista Estates Hoa Assoc Inc | 50 | 3 ppb |
| Evergreen Subdivision | 45 | 2 ppb |
Your move
Look up your address in Cooney Enterprises's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Cooney Enterprises 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. Small systems behave differently: why small systems go over more often.