St Francois County Pwsd 1, MO
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2025). 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.
St Francois County Pwsd 1 at a glance
St Francois County Pwsd 1 serves about 140 people through 58 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 groundwater, in St. Francois County, Missouri. EPA system ID: MO4024538. Ask the utility on your bill for your address in their service line inventory.
St Francois County Pwsd 1's lead record
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for St Francois County Pwsd 1 is 3.76 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 3.76 ppb |
| 2016 | 3.76 ppb |
How St Francois County Pwsd 1 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. St Francois County Pwsd 1's reported as 0 (not detected) sits at the 11th percentile in Missouri and the 12th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in St. Francois County
19 other systems share St. Francois County; 13 of them have a higher latest lead result than St Francois County Pwsd 1. 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 Pws | 3,537 | 12.9 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 |
What to do in your house
Look up your address in St Francois County Pwsd 1'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 St Francois County Pwsd 1 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. Small systems behave differently: why small systems go over more often.