Big Horn Regional Jpb, WY
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2026-2028). 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
Big Horn Regional Jpb serves about 25 people through 10 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 Washakie County, Wyoming. EPA system ID: WY5601630; phone on file: 307-347-4042. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Big Horn Regional Jpb is 3 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2028 | 1 ppb |
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 3 ppb |
| 2016 | 1 ppb |
How Big Horn Regional Jpb 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. Big Horn Regional Jpb's 1 ppb sits at the 33rd percentile in Wyoming and the 50th nationally (higher means more lead).
Neighbouring systems
3 other systems share Washakie County; 1 of them has a higher latest lead result than Big Horn Regional Jpb. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Worland Utilities Commission | 4,787 | 3 ppb |
| Washakie Rural Water System | 990 | 1 ppb |
| Ten Sleep, Town Of | 400 | 0 (not detected) |
Next steps for Worland, WY
Test your own tap with a certified lab first-draw sample; Worland, 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 Big Horn Regional Jpb 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.