Thatcher-Penrose Service District, UT
Lead detected, under the action levels
Latest 90th-percentile lead: 0.8 ppb (monitoring period 2025-2025). 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.
Who runs the water here
Thatcher-Penrose Service District serves about 590 people through 275 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 groundwater, in Box Elder County, Utah. EPA system ID: UTAH02025; phone on file: 435-466-0451. They can tell you what your service line is made of and whether they pay to replace it.
Thatcher-Penrose Service District's lead record
That is down 2.2 ppb from 3 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Thatcher-Penrose Service District is 3 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.8 ppb |
| 2022 | 3 ppb |
| 2021 | 3 ppb |
How Thatcher-Penrose Service District compares
Of the 521 Utah systems with a lead result, the median latest reading is 1.71 ppb; 8 are over 15 ppb right now and 27 have gone over at some point. Thatcher-Penrose Service District's 0.8 ppb sits at the 22nd percentile in Utah and the 48th nationally (higher means more lead).
Neighbouring systems
33 other systems share Box Elder County; 24 of them have a higher latest lead result than Thatcher-Penrose Service District. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Brigham City Water System | 20,540 | 0.8 ppb |
| Tremonton City | 13,000 | 1 ppb |
| Perry City | 6,570 | 1.3 ppb |
| West Corinne Water Co | 1,970 | 1.1 ppb |
| Honeyville Town Water System | 1,750 | 6.7 ppb |
| South Willard | 1,500 | 1.1 ppb |
| Ukon Water Company | 1,465 | 1.4 ppb |
| Elwood Town | 1,300 | 2.3 ppb |
| Mantua Town Water System | 1,200 | 1.8 ppb |
| Riverside-North Garland Water Co | 1,193 | 2.2 ppb |
Next steps for Tremonton, UT
Test your own tap with a certified lab first-draw sample; Tremonton, UT 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 Thatcher-Penrose Service District 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.