Canton Pws, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 2.58 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.
Canton Pws at a glance
Canton Pws serves about 3,200 people through 920 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 Lewis County, Missouri. EPA system ID: MO2010134; phone on file: 573-288-4413. 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 1.31 ppb from 1.27 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Canton Pws is 4.47 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2.58 ppb |
| 2023 | 1.27 ppb |
| 2022 | 3.87 ppb |
| 2020 | 3.87 ppb |
| 2019 | 4.47 ppb |
| 2017 | 4.47 ppb |
| 2016 | 4.36 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. Canton Pws's 2.58 ppb sits at the 78th percentile in Missouri and the 78th nationally (higher means more lead).
Nearby utilities
4 other systems share Lewis County; 2 of them have a higher latest lead result than Canton Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Lewis County Pwsd 1 | 1,700 | 1.55 ppb |
| Lagrange Pws | 875 | 1.81 ppb |
| La Belle Pws | 660 | 10.2 ppb |
| Lewistown Pws | 580 | 4.39 ppb |
Next steps for Canton, MO
Test your own tap with a certified lab first-draw sample; Canton, 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 Canton 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. Systems that went over once often dip back under; here is what that means.