Johns Branch Water Co, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 0.62 ppb (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. 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.
Johns Branch Water Co at a glance
Johns Branch Water Co serves about 75 people through 29 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Wayne County, Missouri. EPA system ID: MO4036309; phone on file: 573-300-6694. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Johns Branch Water Co's lead record
That is down 2.61 ppb from 3.23 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Johns Branch Water Co is 7.8 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.62 ppb |
| 2022 | 3.23 ppb |
| 2019 | 2.9 ppb |
| 2018 | 2.9 ppb |
| 2016 | 7.8 ppb |
Against other Missouri systems
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. Johns Branch Water Co's 0.62 ppb sits at the 43rd percentile in Missouri and the 45th nationally (higher means more lead).
Nearby utilities
14 other systems share Wayne County; 6 of them have a higher latest lead result than Johns Branch Water Co. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Piedmont Pws | 1,987 | 0 (not detected) |
| Wayne & Butler County Pwsd 4 | 1,400 | 0 (not detected) |
| Wayne County Pwsd 2 | 950 | 0 (not detected) |
| Greenville Pws | 497 | 0 (not detected) |
| Community Water System | 378 | 6.15 ppb |
| Williamsville Pws | 342 | 0 (not detected) |
| Wayne County Pwsd 3 | 300 | 7.1 ppb |
| Ridgetop Waterworks Corp Subdivision | 227 | 1.77 ppb |
| Liberty Utilities Whispering Hills Subd | 150 | 0 (not detected) |
| Lost Creek Water Company | 133 | 0.63 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Wappapello, 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 Johns Branch Water Co 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. The action level is dropping - the 10 ppb rule from 2027.