Westmier Subdivision, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 0.81 ppb (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. 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.
Who runs the water here
Westmier Subdivision serves about 90 people through 31 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Lincoln County, Missouri. EPA system ID: MO6031324. Ask the utility on your bill for your address in their service line inventory.
Westmier Subdivision's lead record
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Westmier Subdivision is 1.49 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.81 ppb |
| 2022 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 1.49 ppb |
Against other Missouri systems
Of the 1,674 Missouri systems with a lead result, the median latest reading is 1.04 ppb; 2 are over 15 ppb right now and 74 have gone over at some point. Westmier Subdivision's 0.81 ppb sits at the 46th percentile in Missouri and the 48th nationally (higher means more lead).
Nearby utilities
30 other systems share Lincoln County; 15 of them have a higher latest lead result than Westmier Subdivision. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Troy Pws | 15,000 | 1.5 ppb |
| Lincoln County Pwsd 1 | 14,000 | 3.51 ppb |
| Moscow Mills Pws | 4,500 | 0 (not detected) |
| Elsberry Pws | 2,076 | 0 (not detected) |
| Winfield Pws | 1,489 | 1.29 ppb |
| Lincoln County Pwsd 2 | 1,005 | 5.24 ppb |
| Hawk Point Pws | 945 | 3.45 ppb |
| Quail Run Mhp | 897 | 0 (not detected) |
| Glen Meadows | 650 | 0 (not detected) |
| Majestic Lakes | 512 | 1.52 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Troy, MO 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 Westmier Subdivision 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. The action level is dropping - the 10 ppb rule from 2027.