Mount Vernon Pws, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 2.78 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 Vernon Pws at a glance
Mount Vernon Pws serves about 4,575 people through 1,949 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Lawrence County, Missouri. EPA system ID: MO5010553; phone on file: 417-466-2168. They can tell you what your service line is made of and whether they pay to replace it.
Mount Vernon Pws's lead record
That is up 1.12 ppb from 1.66 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Mount Vernon Pws is 2.78 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 2.78 ppb |
| 2022 | 1.66 ppb |
| 2021 | 1.66 ppb |
| 2021 | 1.66 ppb |
| 2019 | 1.36 ppb |
| 2018 | 1.36 ppb |
| 2018 | 1.36 ppb |
| 2016 | 2.68 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. Mount Vernon Pws's 2.78 ppb sits at the 80th percentile in Missouri and the 79th nationally (higher means more lead).
Nearby utilities
11 other systems share Lawrence County; 1 of them has a higher latest lead result than Mount Vernon Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Liberty Utilities Aurora Verona | 8,529 | 1.6 ppb |
| Marionville | 2,092 | 1.23 ppb |
| Pierce City Pws | 1,200 | 0 (not detected) |
| Miller Pws | 699 | 1.73 ppb |
| Stotts City Pws | 225 | 0 (not detected) |
| Halltown Pws | 185 | 0 (not detected) |
| Freistatt Pws | 165 | 1.32 ppb |
| Park Woods Water Company Inc | 80 | 0.86 ppb |
| Youngberg Estates Mhp | 70 | 1.12 ppb |
| Jamestowne Mhp | 46 | 5.1 ppb |
Next steps for Mt Vernon, MO
Test your own tap with a certified lab first-draw sample; Mt Vernon, 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 Mount Vernon 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. Why sampled homes are the worst-case ones is in the guide to reading the number. The action level is dropping - the 10 ppb rule from 2027.