Ten Mile And Pleasant Valley Wua, MT
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2025-2027). 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.
Ten Mile And Pleasant Valley Wua at a glance
Ten Mile And Pleasant Valley Wua serves about 750 people through 310 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Lewis And Clark County, Montana. EPA system ID: MT0002005; phone on file: 406-442-3939. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Ten Mile And Pleasant Valley Wua's lead record
Against the period ending 2024 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Ten Mile And Pleasant Valley Wua is 3 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2027 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2023 | 3 ppb |
| 2020 | 0 (not detected) |
| 2017 | 1 ppb |
How Ten Mile And Pleasant Valley Wua 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. Ten Mile And Pleasant Valley Wua's reported as 0 (not detected) sits at the 35th percentile in Montana and the 25th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Lewis And Clark County
50 other systems share Lewis And Clark County; 34 of them have a higher latest lead result than Ten Mile And Pleasant Valley Wua. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Helena Water System | 32,091 | 3 ppb |
| East Helena City Of | 2,114 | 1 ppb |
| Eastgate Village Sewer And Water | 2,000 | 1 ppb |
| Va Medical Center Helena | 1,275 | 7 ppb |
| Helena Leisure Llc | 1,200 | 1 ppb |
| North Star Pud | 715 | 7 ppb |
| Treasure State Acres Wua | 483 | 2 ppb |
| La Casa Grande Water And Sewer District | 404 | 2 ppb |
| Skyview Water And Sewer Utility | 400 | 2 ppb |
| Golden Estates Homeowners Association | 400 | 5 ppb |
What to do in your house
Look up your address in Ten Mile And Pleasant Valley Wua'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 Ten Mile And Pleasant Valley Wua whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 2100 ppb (copper action level 1,300 ppb).
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.