Antelope County Water And Sewer, MT
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2017-2017). 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.
About Antelope County Water And Sewer
Antelope County Water And Sewer serves about 59 people through 36 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 Sheridan County, Montana. EPA system ID: MT0003203; phone on file: 406-765-7074. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Antelope County Water And Sewer's lead record
Against the period ending 2017 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Antelope County Water And Sewer is 1 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2017 | 0 (not detected) |
| 2017 | 1 ppb |
| 2016 | 0 (not detected) |
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. Antelope County Water And Sewer's reported as 0 (not detected) sits at the 10th percentile in Montana and the 5th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Sheridan County
4 other systems share Sheridan County; 3 of them have a higher latest lead result than Antelope County Water And Sewer. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Plentywood Water Department | 1,700 | 0 (not detected) |
| Medicine Lake Town Of | 600 | 10 ppb |
| Westby Town Of | 172 | 1 ppb |
| Outlook County Sewer And Water | 96 | 1 ppb |
Your move
Look up your address in Antelope County Water And Sewer'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 Antelope County Water And Sewer 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. Small systems behave differently: why small systems go over more often.