Weston Pws, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 1.11 ppb (monitoring period 2024-2026). 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.
Weston Pws at a glance
Weston Pws serves about 1,850 people through 854 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 groundwater, in Platte County, Missouri. EPA system ID: MO1010851; phone on file: 816-640-2752. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 1.11 ppb from 0 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Weston Pws is 1.11 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.11 ppb |
| 2023 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2017 | 0 (not detected) |
| 2017 | 1.02 ppb |
| 2016 | 0 (not detected) |
Where this result ranks
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. Weston Pws's 1.11 ppb sits at the 52nd percentile in Missouri and the 58th nationally (higher means more lead).
Neighbouring systems
18 other systems share Platte County; 11 of them have a higher latest lead result than Weston Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mo American Platte County | 16,645 | 0 (not detected) |
| Platte Co Pwsd 4 | 9,552 | 0 (not detected) |
| Platte County Cons Pwsd 1 | 7,074 | 3.22 ppb |
| Platte City Pws | 4,691 | 0 (not detected) |
| Platte County Pwsd 6 | 2,095 | 1.1 ppb |
| Weatherby Lake Pws | 2,077 | 0 (not detected) |
| Platte Co Pwsd 9 | 1,860 | 1.19 ppb |
| Platte County Pwsd 7 | 1,750 | 0 (not detected) |
| Platte County Pwsd 8 | 1,200 | 1.66 ppb |
| Lake Waukomis Pws | 1,083 | 2.16 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Weston, 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 Weston Pws 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.