Safest Drinking Water in Utah 2026
Utah has 5 public water systems serving 840,810 people. The safest system is Granger-Hunter Improvement District in Salt Lake City with a score of 82/100.
Top 5 Water Systems in Utah
| # | Water System | City | Pop. Served | Source | Violations | Score |
|---|---|---|---|---|---|---|
| 1 | Granger-Hunter Improvement District | Salt Lake City | 121,083 | Surface water | 0 | B (82) |
| 2 | West Jordan City Water System | West Jordan | 117,025 | Surface water | 0 | B (80) |
| 3 | Provo City | Provo | 116,288 | Surface water | 0 | B (80) |
| 4 | St George City Water System | St George City | 105,240 | Surface water | 0 | C (78) |
| 5 | Salt Lake City Water System | Salt Lake City | 381,174 | Surface water | 2 | F (54) |
Water quality data for Utah is sourced from the EPA Safe Drinking Water Information System (SDWIS), which tracks compliance for all public water systems.
Frequently Asked Questions
Granger-Hunter Improvement District in Salt Lake City has the highest Water Safety Score in Utah at 82/100 (Grade B), serving 121,083 people.
Utah has 5 public water systems serving 840,810 people. The average Water Safety Score is 75/100.
The Water Safety Score (0-100) is based on health violations (40%), contaminant exceedances (30%), enforcement history (20%), and monitoring violations (10%). Higher scores mean cleaner, safer water.
Water Safety Score: health violations (40%), contaminant exceedances (30%), enforcement history (20%), monitoring violations (10%).
The this entity category groups every U.S. public drinking-water safety entity sharing this attribute. The list above is the data; the paragraphs below explain what the grouping means against the broader the EPA Safe Drinking Water Information System (SDWIS) distribution and how to read the relative rankings within the category.
For readers using this category as a starting point, the per-entity detail pages linked from the table above carry the underlying the EPA Safe Drinking Water Information System (SDWIS) data in full. The category-level view is the filter; the per-entity pages are the actual answer.
Source: EPA Ground Water and Drinking Water, 2026.