Ronan City Of, MT
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2025). 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 Ronan City Of
Ronan City Of serves about 2,483 people through 1,011 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Lake County, Montana. EPA system ID: MT0000318; phone on file: 406-676-4231. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Ronan City Of's lead record
Against the period ending 2019 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Ronan City Of is 1 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2019 | 1 ppb |
| 2016 | 1 ppb |
How Ronan City Of 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. Ronan City Of's reported as 0 (not detected) sits at the 38th percentile in Montana and the 32nd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
24 other systems share Lake County; 14 of them have a higher latest lead result than Ronan City Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Polson City Of | 5,300 | 2 ppb |
| Pablo Lake County Water And Sewer Dist | 2,175 | 0 (not detected) |
| St Ignatius Town Of | 700 | 1 ppb |
| Woods Bay Water And Sewer District | 685 | 4 ppb |
| Consolidated Charlo Lake Co W And S Dist | 450 | 0 (not detected) |
| Round Butte Water Company | 400 | 2 ppb |
| Jette Meadows Lake Co W And S Dist | 375 | 1 ppb |
| Jette Lake Landowners Association | 295 | 0 (not detected) |
| Ridgewood Estates | 250 | 2 ppb |
| Mission Meadows Rv Campsite Park, Inc | 200 | 0 (not detected) |
Next steps for Ronan, MT
Look up your address in Ronan City Of'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 Ronan City Of 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.