Walnut Grove Mhp, 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.
Walnut Grove Mhp at a glance
Walnut Grove Mhp serves about 210 people through 50 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in St. Francois County, Missouri. EPA system ID: MO4041308. Ask the utility on your bill for your address in their service line inventory.
Walnut Grove Mhp'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 Walnut Grove Mhp is 2.7 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 | 2.7 ppb |
| 2018 | 2.7 ppb |
| 2018 | 2.7 ppb |
| 2016 | 0.84 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. Walnut Grove Mhp's reported as 0 (not detected) sits at the 15th percentile in Missouri and the 16th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
19 other systems share St. Francois County; 13 of them have a higher latest lead result than Walnut Grove Mhp. 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 |
Your move
Look up your address in Walnut Grove Mhp'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 Walnut Grove Mhp 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Small systems behave differently: why small systems go over more often.