Ste Genevieve Pws, MO
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
Who runs the water here
Ste Genevieve Pws serves about 4,999 people through 2,040 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 Ste. Genevieve County, Missouri. EPA system ID: MO4010710; phone on file: 573-883-5400. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is down 1.15 ppb from 1.15 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Ste Genevieve Pws is 4.53 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2022 | 1.15 ppb |
| 2021 | 1.15 ppb |
| 2021 | 1.15 ppb |
| 2019 | 1.84 ppb |
| 2018 | 1.84 ppb |
| 2018 | 1.84 ppb |
| 2016 | 4.53 ppb |
How Ste Genevieve 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. Ste Genevieve Pws's reported as 0 (not detected) sits at the 37th percentile in Missouri and the 35th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Ste. Genevieve County
7 other systems share Ste. Genevieve County; 7 of them have a higher latest lead result than Ste Genevieve Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Ste Genevieve County Pwsd 1 Sc | 3,718 | 1.5 ppb |
| Ste Genevieve County Pwsd 1 North | 1,287 | 1.11 ppb |
| Lake Forest Estates | 811 | 1.35 ppb |
| Grayhawk Water | 750 | 1.41 ppb |
| Bloomsdale Pws | 639 | 1.18 ppb |
| Lake Seven Falls Assn Inc | 475 | 1.4 ppb |
| St Mary Pws | 350 | 3.25 ppb |
Next steps for Ste Genevieve, MO
Look up your address in Ste Genevieve 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 Ste Genevieve 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.