Houstonia Pws, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 2.53 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.
Houstonia Pws at a glance
Houstonia Pws serves about 198 people through 90 service connections, which makes it a very 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: MO3010384; phone on file: 660-568-3555. They can tell you what your service line is made of and whether they pay to replace it.
Houstonia Pws's lead record
That is down 5.27 ppb from 7.8 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Houstonia Pws is 7.8 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2.53 ppb |
| 2023 | 7.8 ppb |
| 2022 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2017 | 0 (not detected) |
| 2016 | 0.54 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. Houstonia Pws's 2.53 ppb sits at the 78th percentile in Missouri and the 78th nationally (higher means more lead).
Neighbouring systems
18 other systems share Pettis County; 4 of them have a higher latest lead result than Houstonia 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 |
| Green Ridge Pws | 595 | 1.99 ppb |
| Mo American Smithton | 500 | 1 ppb |
| Southgate Subdivision | 216 | 14.8 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) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Housonia, 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 Houstonia 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. The action level is dropping - the 10 ppb rule from 2027.