Monticello City, UT
Lead detected, under the action levels
Latest 90th-percentile lead: 3.6 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
Monticello City serves about 2,393 people through 940 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 surface water, in San Juan County, Utah. EPA system ID: UTAH19004; phone on file: 435-587-2271. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Monticello City's lead record
Against the period ending 2023 (3.6 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Monticello City is 3.6 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 3.6 ppb |
| 2023 | 3.6 ppb |
| 2022 | 3.3 ppb |
| 2020 | 3.3 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. Monticello City's 3.6 ppb sits at the 79th percentile in Utah and the 86th nationally (higher means more lead).
Nearby utilities
9 other systems share San Juan County; 4 of them have a higher latest lead result than Monticello City. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Blanding City | 3,500 | 1.3 ppb |
| San Juan Spanish Valley Ssd | 550 | 6.9 ppb |
| Bluff Water Works Service District | 430 | 0.3 ppb |
| Glen Canyon Nra - Halls Crossing | 190 | 7.3 ppb |
| Rockland Ranch | 175 | 0 (not detected) |
| Mexican Hat Ssd | 120 | 2.2 ppb |
| Eastland Special Service District | 90 | 7.2 ppb |
| Pack Creek Water Company | 75 | 49 ppb |
| Wilson Arch Water & Sewer Ssd | 37 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Monticello, 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 Monticello 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. Why sampled homes are the worst-case ones is in the guide to reading the number. The action level is dropping - the 10 ppb rule from 2027.