Walnut Grove Pws, MO
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2024-2026). 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 Pws at a glance
Walnut Grove Pws serves about 762 people through 309 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 Greene County, Missouri. EPA system ID: MO5010829; phone on file: 417-788-2596. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Walnut Grove Pws is 2 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2020 | 1.6 ppb |
| 2020 | 1.6 ppb |
| 2017 | 2 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 Pws's reported as 0 (not detected) sits at the 27th percentile in Missouri and the 25th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
28 other systems share Greene County; 19 of them have a higher latest lead result than Walnut Grove Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Utilities Of Springfield | 210,898 | 5.1 ppb |
| Republic Pws | 16,100 | 1.65 ppb |
| Greene County Pwsd 1 | 9,168 | 3.52 ppb |
| Willard Pws | 8,400 | 3.92 ppb |
| Strafford Pws | 2,600 | 0 (not detected) |
| Ash Grove Pws | 1,512 | 4.4 ppb |
| Greene County Pwsd 5 | 1,500 | 3.68 ppb |
| Greene County Pwsd 6 | 485 | 2.35 ppb |
| The Willows Utility Company | 315 | 0.99 ppb |
| Silver Bell Mhp | 300 | 0 (not detected) |
Your move
Look up your address in Walnut 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 Walnut 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. Why sampled homes are the worst-case ones is in the guide to reading the number. A zero today does not rule out a jump later - the rules are tightening in 2027.