Mo American Monsees Lake Estates, MO
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 12 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. Under the current 15 ppb rule this is not an exceedance, but it is above the 10 ppb action level that takes over in Nov 2027. Test your own tap; filter if your result shows lead.
Who runs the water here
Mo American Monsees Lake Estates serves about 155 people through 62 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Pettis County, Missouri. EPA system ID: MO3036105; phone on file: 417-680-0314. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is up 11 ppb from 1 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Mo American Monsees Lake Estates is 12 ppb across 7 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 12 ppb over 10 |
| 2023 | 1 ppb |
| 2022 | 0.7 ppb |
| 2020 | 0.7 ppb |
| 2019 | 3.72 ppb |
| 2017 | 3.72 ppb |
| 2016 | 0.51 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. Mo American Monsees Lake Estates's 12 ppb sits at the 99th percentile in Missouri and the 98th nationally (higher means more lead).
Neighbouring systems
18 other systems share Pettis County; 1 of them has a higher latest lead result than Mo American Monsees Lake Estates. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sedalia Pws | 21,725 | 1.72 ppb |
| La Monte Pws | 1,120 | 5.51 ppb |
| Mo American Maplewood Subdivision | 1,008 | 2 ppb |
| Green Ridge Pws | 595 | 1.99 ppb |
| Mo American Smithton | 500 | 1 ppb |
| Southgate Subdivision | 216 | 14.8 ppb |
| Houstonia Pws | 198 | 2.53 ppb |
| Hughesville Pws | 158 | 5.5 ppb |
| Elm Hills Utility Operating Company Inc | 154 | 0 (not detected) |
| Southern Hills Water Co | 144 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Joplin, 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 Mo American Monsees Lake Estates 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. This system is in the band the 2027 10 ppb rule changes.