Mountain Grove 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.
Mountain Grove Pws at a glance
Mountain Grove Pws serves about 4,789 people through 2,043 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 Wright County, Missouri. EPA system ID: MO5010550; phone on file: 417-293-3996. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Mountain Grove Pws is 1.62 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2019 | 1.62 ppb |
| 2018 | 1.62 ppb |
| 2018 | 1.62 ppb |
| 2016 | 1.1 ppb |
How Mountain Grove 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. Mountain Grove 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.
Nearby utilities
6 other systems share Wright County; 5 of them have a higher latest lead result than Mountain Grove Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mansfield Pws | 1,193 | 2.55 ppb |
| Norwood Pws | 665 | 6.14 ppb |
| Hartville Pws | 655 | 0 (not detected) |
| Wright County Pwsd 1 | 483 | 0.92 ppb |
| Missouri Rv Park | 90 | 1.2 ppb |
| Shady Oak Mhp | 65 | 2.21 ppb |
Next steps for Mountain Grove, MO
Look up your address in Mountain Grove 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 Mountain Grove 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. What a 90th-percentile result does and does not tell you: how to read a lead result. A zero today does not rule out a jump later - the rules are tightening in 2027.