Mount Pleasant Estates, MT
Lead detected, under the action levels
Latest 90th-percentile lead: 3 ppb (monitoring period 2022-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Mount Pleasant Estates at a glance
Mount Pleasant Estates serves about 45 people through 15 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Richland County, Montana. EPA system ID: MT0000644; phone on file: 406-433-5464. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is up 3 ppb from 0 ppb in the period ending 2018. The highest 90th-percentile result EPA holds for Mount Pleasant Estates is 3 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 3 ppb |
| 2018 | 0 (not detected) |
| 2017 | 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. Mount Pleasant Estates's 3 ppb sits at the 80th percentile in Montana and the 81st nationally (higher means more lead).
Other water systems in Richland County
4 other systems share Richland County; 1 of them has a higher latest lead result than Mount Pleasant Estates. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sidney City Of | 5,000 | 1 ppb |
| Fairview Town Of | 1,000 | 0 (not detected) |
| Lambert Sewer And Water Assn | 150 | 0 (not detected) |
| Richland Co Valley View Wua | 85 | 5 ppb |
Next steps for Sidney, MT
Test your own tap with a certified lab first-draw sample; Sidney, MT may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Mount Pleasant Estates 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. Systems that went over once often dip back under; here is what that means.