Stonebridge West Subd, MO
Exceeded the action level in the past
Latest 90th-percentile lead: 1.11 ppb (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Who runs the water here
Stonebridge West Subd serves about 162 people through 58 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Stone County, Missouri. EPA system ID: MO5036201; phone on file: 405-834-9477. They can tell you what your service line is made of and whether they pay to replace it.
Stonebridge West Subd's lead record
Against the period ending 2025 (1.64 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Stonebridge West Subd is 27.4 ppb across 7 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.11 ppb |
| 2025 | 1.64 ppb |
| 2024 | 27.4 ppb over 15 |
| 2021 | 0.55 ppb |
| 2021 | 0.55 ppb |
| 2018 | 2.47 ppb |
| 2016 | 3.32 ppb |
How Stonebridge West 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. Stonebridge West Subd's 1.11 ppb sits at the 52nd percentile in Missouri and the 58th nationally (higher means more lead).
Nearby utilities
87 other systems share Stone County; 41 of them have a higher latest lead result than Stonebridge West Subd. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mo American Stonebridge Village | 2,100 | 0 (not detected) |
| Stone County Pwsd 1 | 2,052 | 2.13 ppb |
| Pwsd 2 Of Stone County 265 | 1,535 | 2.59 ppb |
| Crane Pws | 1,495 | 2.59 ppb |
| Mo Ark Water Co | 1,478 | 1.52 ppb |
| Reeds Spring Pws | 1,287 | 0 (not detected) |
| Mo American Ozark Mtn Water Company 2 | 583 | 7 ppb |
| Twin Island Estates | 525 | 4.58 ppb |
| Ocwc Lantern Bay | 502 | 3.54 ppb |
| Galena Pws | 500 | 1.01 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Kimberling City, 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 Stonebridge West 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. More in what a past exceedance means today.