Mendon Pws, MO
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
Mendon Pws at a glance
Mendon Pws serves about 207 people through 114 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Chariton County, Missouri. EPA system ID: MO2010514; phone on file: 660-375-7266. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2023 (0.56 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Mendon Pws is 0.56 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2023 | 0.56 ppb |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 0 (not detected) |
How Mendon Pws compares
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. Mendon Pws's reported as 0 (not detected) sits at the 15th percentile in Missouri and the 15th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
4 other systems share Chariton County; 2 of them have a higher latest lead result than Mendon Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Salisbury Pws | 1,620 | 1.3 ppb |
| Chariton County Pwsd 2 | 1,078 | 3.9 ppb |
| Mo American Brunswick | 858 | 0 (not detected) |
| Keytesville Pws | 500 | 0 (not detected) |
Your move
Look up your address in Mendon Pws'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 Mendon 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. The lead result guide covers how utilities pick the homes they sample. A zero today does not rule out a jump later - the rules are tightening in 2027.