Thermopolis, Town Of, WY
Lead detected, under the action levels
Latest 90th-percentile lead: 4 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.
Thermopolis, Town Of at a glance
Thermopolis, Town Of serves about 2,775 people through 1,630 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 surface water, in Hot Springs County, Wyoming. EPA system ID: WY5600056; phone on file: 307-864-2658. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 4 ppb from 0 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Thermopolis, Town Of is 4 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4 ppb |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 2 ppb |
How Thermopolis, Town Of compares
Of the 311 Wyoming systems with a lead result, the median latest reading is 1 ppb; 0 are over 15 ppb right now and 16 have gone over at some point. Thermopolis, Town Of's 4 ppb sits at the 90th percentile in Wyoming and the 88th nationally (higher means more lead).
Other water systems in Hot Springs County
6 other systems share Hot Springs County; 0 of them have a higher latest lead result than Thermopolis, Town Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| South Thermopolis W&S District | 450 | 1 ppb |
| Lucerne Water And Sewer Dist. | 350 | 0 (not detected) |
| East Thermopolis, Town Of | 254 | 0 (not detected) |
| Red Lane Domestic Water, Inc. | 110 | 2 ppb |
| Owl Creek Water District | 100 | 0 (not detected) |
| Kirby, Town Of | 70 | 1 ppb |
Next steps for Thermopolis, WY
Test your own tap with a certified lab first-draw sample; Thermopolis, WY 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 Thermopolis, Town Of 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.