Clarkton Pws, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 1.25 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.
Who runs the water here
Clarkton Pws serves about 1,124 people through 436 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 Dunklin County, Missouri. EPA system ID: MO4010170; phone on file: 573-448-3728. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is down 1.41 ppb from 2.66 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Clarkton Pws is 2.66 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.25 ppb |
| 2022 | 2.66 ppb |
| 2022 | 2.66 ppb |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 1.06 ppb |
| 2016 | 1.06 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. Clarkton Pws's 1.25 ppb sits at the 55th percentile in Missouri and the 60th nationally (higher means more lead).
Neighbouring systems
11 other systems share Dunklin County; 7 of them have a higher latest lead result than Clarkton Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Kennett Pws | 10,200 | 1.12 ppb |
| Dunklin County Pwsd 1 | 4,307 | 1.66 ppb |
| Malden Pws | 3,700 | 2.46 ppb |
| Dunklin County Pwsd 2 | 2,900 | 1.41 ppb |
| Campbell Pws | 1,992 | 1.4 ppb |
| Dunklin County Pwsd 3 South | 1,972 | 0 (not detected) |
| Senath Pws | 1,767 | 5.48 ppb |
| Holcomb Pws | 635 | 1.8 ppb |
| Cardwell Pws | 533 | 1.57 ppb |
| Hornersville Pws | 526 | 0 (not detected) |
Next steps for Clarkton, MO
Test your own tap with a certified lab first-draw sample; Clarkton, 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 Clarkton 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. Systems that went over once often dip back under; here is what that means.