Martinsdale Colony, MT
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2028). 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 Martinsdale Colony
Martinsdale Colony serves about 150 people through 10 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Wheatland County, Montana. EPA system ID: MT0000445; phone on file: 406-572-3474. They can tell you what your service line is made of and whether they pay to replace it.
Martinsdale Colony's lead record
Against the period ending 2019 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Martinsdale Colony is 0 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2028 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 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. Martinsdale Colony's reported as 0 (not detected) sits at the 25th percentile in Montana and the 13th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
6 other systems share Wheatland County; 3 of them have a higher latest lead result than Martinsdale Colony. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Harlowton City Of | 1,050 | 2 ppb |
| Judith Gap Town Of | 126 | 0 (not detected) |
| Springwater Colony | 100 | 1 ppb |
| Cmrwa Musselshell Judith Rural Water Sys | 100 | - |
| Duncan Ranch Colony | 96 | 0 (not detected) |
| Two Dot Water Users Company | 50 | 3 ppb |
Next steps for Martinsdale, MT
Look up your address in Martinsdale Colony'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 Martinsdale Colony 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. The lead result guide covers how utilities pick the homes they sample. A zero today does not rule out a jump later - the rules are tightening in 2027.