Thomas Hill Pwsd 1, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 3.09 ppb (monitoring period 2022-2024). 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.
Thomas Hill Pwsd 1 at a glance
Thomas Hill Pwsd 1 serves about 11,250 people through 4,500 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Randolph County, Missouri. EPA system ID: MO2024504; phone on file: 660-263-6603. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Thomas Hill Pwsd 1's lead record
Against the period ending 2021 (2.54 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Thomas Hill Pwsd 1 is 4.49 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 3.09 ppb |
| 2021 | 2.54 ppb |
| 2021 | 2.54 ppb |
| 2018 | 2.74 ppb |
| 2018 | 2.74 ppb |
| 2016 | 4.49 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. Thomas Hill Pwsd 1's 3.09 ppb sits at the 83rd percentile in Missouri and the 83rd nationally (higher means more lead).
Other water systems in Randolph County
4 other systems share Randolph County; 2 of them have a higher latest lead result than Thomas Hill Pwsd 1. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Moberly Pws | 13,783 | 2.46 ppb |
| Huntsville Pws | 1,563 | 4.02 ppb |
| Higbee Pws | 560 | 6.79 ppb |
| Clark Pws | 300 | 2.75 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Moberly, 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 Thomas Hill Pwsd 1 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. The lead result guide covers how utilities pick the homes they sample. Systems that went over once often dip back under; here is what that means.