Ophir Canyon Water Association, UT
Lead detected, under the action levels
Latest 90th-percentile lead: 4.1 ppb (monitoring period 2021-2023). 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 Ophir Canyon Water Association
Ophir Canyon Water Association serves about 108 people through 40 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Tooele County, Utah. EPA system ID: UTAH23006; phone on file: 435-830-5996. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2020 (5 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Ophir Canyon Water Association is 5 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 4.1 ppb |
| 2020 | 5 ppb |
Against other Utah systems
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. Ophir Canyon Water Association's 4.1 ppb sits at the 83rd percentile in Utah and the 88th nationally (higher means more lead).
Nearby utilities
12 other systems share Tooele County; 1 of them has a higher latest lead result than Ophir Canyon Water Association. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Tooele City Water System | 41,770 | 2.6 ppb |
| Grantsville City | 16,284 | 2.9 ppb |
| Stansbury Park Improvement District | 9,839 | 2.6 ppb |
| Oquirrh Mountain Water Co | 2,500 | 8.7 ppb |
| Wendover City Water System | 1,525 | 0.8 ppb |
| Erda Acres Water Co | 1,150 | 1.4 ppb |
| South Rim Water System | 834 | 1.1 ppb |
| Lincoln Culinary Water Assn | 660 | 1.3 ppb |
| Stockton Town Water System | 620 | 1.5 ppb |
| Dugway - English Village | 600 | 2.1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Tooele, 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 Ophir Canyon Water Association 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.