Clawson Water System, UT
Lead detected, under the action levels
Latest 90th-percentile lead: 1.8 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.
About Clawson Water System
Clawson Water System serves about 200 people through 114 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 surface water, in Emery County, Utah. EPA system ID: UTAH08002; phone on file: 435-381-5333. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2025 (1.8 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Clawson Water System is 2.5 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.8 ppb |
| 2025 | 1.8 ppb |
| 2016 | 2.5 ppb |
How Clawson Water System 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. Clawson Water System's 1.8 ppb sits at the 51st percentile in Utah and the 67th nationally (higher means more lead).
Other water systems in Emery County
10 other systems share Emery County; 6 of them have a higher latest lead result than Clawson Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Huntington - Castle Valley Ssd | 2,129 | 2.4 ppb |
| Castledale | 1,700 | 2.7 ppb |
| Ferron - Castle Valley Ssd | 1,660 | 2.2 ppb |
| North Emery Ssd | 1,452 | 3 ppb |
| Orangeville | 1,420 | 1.7 ppb |
| Green River City | 910 | 1.3 ppb |
| Cleveland Water System | 509 | 3.4 ppb |
| Elmo Town | 368 | 6.5 ppb |
| Emery | 315 | 1 ppb |
| Trail Cyn Residents Assn | 62 | 0.69 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Castledale, 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 Clawson Water System 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. Systems that went over once often dip back under; here is what that means.