Gorgoza Mutual Water Co, UT
Lead detected, under the action levels
Latest 90th-percentile lead: 8.2 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 Gorgoza Mutual Water Co
Gorgoza Mutual Water Co serves about 4,326 people through 1,690 service connections, which makes it a medium-sized system under EPA's size classes. It is privately owned and draws groundwater, in Summit County, Utah. EPA system ID: UTAH22030; phone on file: 435-214-7306. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2025 (8.2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Gorgoza Mutual Water Co is 8.2 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 8.2 ppb |
| 2025 | 8.2 ppb |
| 2022 | 4.9 ppb |
| 2021 | 3 ppb |
| 2017 | 5.6 ppb |
| 2016 | 6.8 ppb |
| 2016 | 4.6 ppb |
How Gorgoza Mutual Water Co 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. Gorgoza Mutual Water Co's 8.2 ppb sits at the 96th percentile in Utah and the 96th nationally (higher means more lead).
Neighbouring systems
26 other systems share Summit County; 0 of them have a higher latest lead result than Gorgoza Mutual Water Co. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Park City Water System | 8,875 | 1.9 ppb |
| Mountain Regional Water Ssd | 8,245 | 4.5 ppb |
| Summit Water Distribution Company | 6,000 | 3.8 ppb |
| Kamas City Water System | 2,200 | 2 ppb |
| Oakley Town Water System | 1,800 | 1 ppb |
| Francis Town Water System | 1,700 | 2.5 ppb |
| Coalville City Water System | 1,590 | 2.1 ppb |
| Pine Meadow Mutual Water | 1,251 | 3.7 ppb |
| Summit County Service Area #3 | 1,140 | 0 (not detected) |
| Henefer Town Water System | 882 | 1.3 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Park City, 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 Gorgoza Mutual Water Co 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.