South Jordan City, 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.
Who runs the water here
South Jordan City serves about 89,704 people through 26,555 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Salt Lake County, Utah. EPA system ID: UTAH18023; phone on file: 801-253-5203. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2023 (4.1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for South Jordan City is 5 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 4.1 ppb |
| 2023 | 4.1 ppb |
| 2020 | 2.1 ppb |
| 2020 | 2.1 ppb |
| 2017 | 5 ppb |
How South Jordan City 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. South Jordan City's 4.1 ppb sits at the 84th percentile in Utah and the 88th nationally (higher means more lead).
Neighbouring systems
38 other systems share Salt Lake County; 9 of them have a higher latest lead result than South Jordan City. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Salt Lake City Water System | 383,612 | 2.51 ppb |
| Granger-Hunter Improvement District | 121,083 | 1.9 ppb |
| West Jordan City Water System | 117,025 | 2.5 ppb |
| Sandy City Water System | 99,750 | 2.92 ppb |
| Jordan Valley Wcd | 99,335 | 5.05 ppb |
| Taylorsville-Bennion Id | 67,098 | 3.3 ppb |
| Herriman City Municipal Water Department | 60,000 | 3.8 ppb |
| University Of Utah | 57,080 | 5.5 ppb |
| Kearns Improvement District | 56,700 | 1.3 ppb |
| Riverton City Water System | 45,600 | 3 ppb |
Next steps for South Jordan, UT
Test your own tap with a certified lab first-draw sample; South Jordan, 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 South Jordan City 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. Size matters more than most people expect: small vs large water systems.