Green Ridge Pws, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 1.99 ppb (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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About Green Ridge Pws
Green Ridge Pws serves about 595 people through 211 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 Pettis County, Missouri. EPA system ID: MO3010332; phone on file: 660-527-3541. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Green Ridge Pws's lead record
That is up 1.43 ppb from 0.56 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Green Ridge Pws is 2.17 ppb across 12 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.99 ppb |
| 2025 | 0.56 ppb |
| 2023 | 0.56 ppb |
| 2023 | 0.56 ppb |
| 2022 | 1.2 ppb |
| 2020 | 1.2 ppb |
| 2020 | 1.2 ppb |
| 2019 | 2.17 ppb |
| 2017 | 2.17 ppb |
| 2017 | 2.17 ppb |
| 2016 | 2.13 ppb |
| 2016 | 2.13 ppb |
How Green Ridge 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. Green Ridge Pws's 1.99 ppb sits at the 70th percentile in Missouri and the 69th nationally (higher means more lead).
Neighbouring systems
18 other systems share Pettis County; 6 of them have a higher latest lead result than Green Ridge Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sedalia Pws | 21,725 | 1.72 ppb |
| La Monte Pws | 1,120 | 5.51 ppb |
| Mo American Maplewood Subdivision | 1,008 | 2 ppb |
| Mo American Smithton | 500 | 1 ppb |
| Southgate Subdivision | 216 | 14.8 ppb |
| Houstonia Pws | 198 | 2.53 ppb |
| Hughesville Pws | 158 | 5.5 ppb |
| Mo American Monsees Lake Estates | 155 | 12 ppb |
| Elm Hills Utility Operating Company Inc | 154 | 0 (not detected) |
| Southern Hills Water Co | 144 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Green Ridge, MO may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Green Ridge 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. Systems that went over once often dip back under; here is what that means.