Prairie Heights Subd, 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.
Who runs the water here
Prairie Heights Subd serves about 85 people through 54 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Polk County, Missouri. EPA system ID: MO5036140; phone on file: 314-464-3964. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Prairie Heights Subd is 1.19 ppb across 6 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 | 1.19 ppb |
| 2019 | 1.19 ppb |
| 2019 | 0 (not detected) |
How Prairie Heights Subd 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. Prairie Heights Subd's reported as 0 (not detected) sits at the 7th percentile in Missouri and the 8th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Polk County
13 other systems share Polk County; 10 of them have a higher latest lead result than Prairie Heights Subd. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Liberty Utilities Bolivar | 11,000 | 1.2 ppb |
| Humansville Pws | 1,048 | 6.94 ppb |
| Pleasant Hope Pws | 614 | 0 (not detected) |
| Bolivar Southtown Utilities Company Inc | 573 | 1.06 ppb |
| Fair Play Pws | 475 | 0 (not detected) |
| Texas Landing Utilities | 420 | 0 (not detected) |
| Morrisville Pws | 400 | 1.27 ppb |
| Silo Ridge | 400 | 2.02 ppb |
| Halfway Pws | 151 | 2.93 ppb |
| Flemington Pws | 124 | 1.57 ppb |
Next steps for St Louis, MO
Look up your address in Prairie Heights Subd'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 Prairie Heights Subd 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.