Hickory Hill Water, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 4.3 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.
Hickory Hill Water at a glance
Hickory Hill Water serves about 342 people through 114 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Wilson County, Missouri. EPA system ID: TX2470018; phone on file: 254-355-9124. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Hickory Hill Water's lead record
That is up 4.3 ppb from 0 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Hickory Hill Water is 4.3 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 4.3 ppb |
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
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. Hickory Hill Water's 4.3 ppb sits at the 89th percentile in Missouri and the 89th nationally (higher means more lead).
Neighbouring systems
3 other systems share Wilson County; 0 of them have a higher latest lead result than Hickory Hill Water. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| C Willow Water | 855 | 0 (not detected) |
| Shady Oaks Water | 432 | 0 (not detected) |
| Arrowhead Water System | 141 | 0.6 ppb |
Next steps for Saint Louis, MO
Test your own tap with a certified lab first-draw sample; Saint Louis, 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 Hickory Hill Water 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. Size matters more than most people expect: small vs large water systems.