Marthasville 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.
Marthasville Pws at a glance
Marthasville Pws serves about 1,200 people through 495 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Warren County, Missouri. EPA system ID: MO6010505; phone on file: 636-433-5554. They can tell you what your service line is made of and whether they pay to replace it.
Marthasville Pws's lead record
That is down 1.84 ppb from 1.84 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Marthasville Pws is 1.84 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2022 | 1.84 ppb |
| 2021 | 1.84 ppb |
| 2021 | 1.84 ppb |
| 2019 | 1.73 ppb |
| 2018 | 1.73 ppb |
| 2018 | 1.73 ppb |
| 2016 | 1.47 ppb |
Where this result ranks
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. Marthasville Pws's reported as 0 (not detected) sits at the 30th percentile in Missouri and the 28th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Warren County
15 other systems share Warren County; 9 of them have a higher latest lead result than Marthasville Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Warrenton Pws | 8,208 | 0 (not detected) |
| St Charles Co Pwsd #2 Wright City | 3,550 | 1.14 ppb |
| St Charles County Pwsd 2 Warren | 1,192 | 1.22 ppb |
| Lake Sherwood Subd | 1,100 | 3.83 ppb |
| Truesdale Pws | 853 | 0 (not detected) |
| Innsbrook | 810 | 0 (not detected) |
| St Charles County Pwsd 2 North Oak Dr | 660 | 1.26 ppb |
| St Charles County Pwsd 2 Dutzow | 400 | 3.92 ppb |
| Pleasant Oak Mhp | 150 | 0.56 ppb |
| Maple Ridge Mhp | 140 | 0 (not detected) |
Next steps for Marthasville, MO
Look up your address in Marthasville 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 Marthasville 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. Small systems behave differently: why small systems go over more often.