Bonne Terre Pws, MO
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 12.9 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. 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.
Bonne Terre Pws at a glance
Bonne Terre Pws serves about 3,537 people through 1,597 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 St. Francois County, Missouri. EPA system ID: MO4010087; phone on file: 573-358-2254. 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 10.38 ppb from 2.52 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Bonne Terre Pws is 12.9 ppb across 8 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 12.9 ppb over 10 |
| 2021 | 2.52 ppb |
| 2021 | 2.52 ppb |
| 2019 | 3.94 ppb |
| 2018 | 1.3 ppb |
| 2018 | 2.56 ppb |
| 2017 | 3.94 ppb |
| 2016 | 1.92 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. Bonne Terre Pws's 12.9 ppb sits at the 99th percentile in Missouri and the 98th nationally (higher means more lead).
Neighbouring systems
19 other systems share St. Francois County; 1 of them has a higher latest lead result than Bonne Terre Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Farmington Pws | 18,217 | 4.82 ppb |
| Park Hills Pws | 8,587 | 8.6 ppb |
| Desloge Pws | 5,034 | 3.69 ppb |
| Bonne Terre Prison | 3,500 | 8.07 ppb |
| Farmington Correctional Center | 3,500 | 0 (not detected) |
| Terre Du Lac | 3,200 | 3.9 ppb |
| Bismarck Pws | 1,475 | 1.9 ppb |
| Leadwood Pws | 1,200 | 1.11 ppb |
| St Francois County Pwsd 2 | 850 | 1.51 ppb |
| Pilot Knob Rural Wd 1 Doe Run Area | 507 | 1.4 ppb |
Next steps for Bonne Terre, MO
Test your own tap with a certified lab first-draw sample; Bonne Terre, 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 Bonne Terre 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. This system is in the band the 2027 10 ppb rule changes.