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Updated 2026-10-15
County water report

Salt Lake County Water Quality: 8 Cities Ranked by the Records

Salt Lake County, Utah: 8 city reports built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.

Find my systemOpen on the mapPrivate wells in Salt Lake County
Across the county's systems

Highest result for each contaminant

One row per contaminant: the highest result any system in the county reported, against its limit. Open a row for the systems behind it.

LithiumDetected in 8 systems10 µg/L EPA health reference level (screening, not a legal limit) · US EPAHighest86 µg/L
Perfluorohexanesulfonic acid (PFHxS)Detected in 1 system of 8 tested10 ng/L federal MCL (2024) · US EPAHighest18.2 ng/L
Perfluorooctanesulfonic acid (PFOS)Detected in 1 system of 8 tested4.0 ng/L federal MCL (2024) · US EPAHighest7.1 ng/L
Water hardnessDetected in 1 systemAesthetic, no federal health limit · USGSHighest20.7 gpg
Lead (90th percentile)Detected in 8 systems15 µg/L federal action level · US EPAHighest6 µg/L
Perfluorobutanesulfonic acid (PFBS)Detected in 1 system of 8 tested2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPAHighest3.1 ng/L
Perfluorohexanoic acid (PFHxA)Detected in 3 systems of 8 tested400,000 ng/L Michigan EGLE state MCL (strictest US state) · Michigan EGLEHighest8.5 ng/L
Perfluoropentanoic acid (PFPeA)Detected in 3 systems of 8 testedNo federal or state limit; shown for transparencyHighest6.2 ng/L
24 PFAS tested, none detected in any systemShow

Tested in these 8 systems: DRAPER CITY WATER SYSTEM, HERRIMAN CITY MUNICIPAL WATER DEPARTMENT, MIDVALE CITY WATER SYSTEM, RIVERTON CITY WATER SYSTEM, SALT LAKE CITY WATER SYSTEM, SANDY CITY WATER SYSTEM, SOUTH JORDAN CITY, WEST JORDAN CITY WATER SYSTEM

  • 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
  • 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
  • 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
  • 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
  • 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
  • 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
  • Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
  • N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
  • N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
  • Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
  • Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
  • Perfluoro-3-methoxypropanoic acid (PFMPA)
  • Perfluoro-4-methoxybutanoic acid (PFMBA)
  • Perfluorobutanoic acid (PFBA)
  • Perfluorodecanoic acid (PFDA)
  • Perfluorododecanoic acid (PFDoA)
  • Perfluoroheptanesulfonic acid (PFHpS)
  • Perfluoroheptanoic acid (PFHpA)
  • Perfluorononanoic acid (PFNA)
  • Perfluorooctanoic acid (PFOA)
  • Perfluoropentanesulfonic acid (PFPeS)
  • Perfluorotetradecanoic acid (PFTA)
  • Perfluorotridecanoic acid (PFTrDA)
  • Perfluoroundecanoic acid (PFUnA)
8 cities

Cities ranked by the records

Showing 6 of 8 cities · scores are system-level, not tap tests

Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no county score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works.

PFAS in Salt Lake County1 of 8 city reports had a PFAS sample above a 2024 EPA limit
  1. Salt Lake City7.1 ng/L
4.0 ng/L federal MCL · PFOS, ng/LPFAS in Utah
Lead

0of 8 cities above the 15 µg/L action level

Based on each system's 90th-percentile result. Lead from household plumbing isn't in this record.

Lead in Utah
Hard water

1city reports hardness · Salt Lake City, 20.7 gpg

Hard on the USGS scale. An aesthetic measure with no federal health limit.

Hard water explained
Who supplies the county

Largest water systems

  1. Salt Lake CitySALT LAKE CITY WATER SYSTEM · UTAH18026
    383,612 served
  2. West JordanWEST JORDAN CITY WATER SYSTEM · UTAH18020
    117,025 served
  3. SandySANDY CITY WATER SYSTEM · UTAH18028
    99,750 served
  4. South JordanSOUTH JORDAN CITY · UTAH18023
    89,704 served
  5. HerrimanHERRIMAN CITY MUNICIPAL WATER DEPARTMENT · UTAH18157
    60,000 served
  6. RivertonRIVERTON CITY WATER SYSTEM · UTAH18025
    45,600 served
  7. MidvaleMIDVALE CITY WATER SYSTEM · UTAH18017
    33,005 served
  8. DraperDRAPER CITY WATER SYSTEM · UTAH18133
    23,205 served
Questions

Frequently asked

How does Salt Lake County tap water compare across cities?

PurityMap ranks 8 cities in Salt Lake County by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is West Jordan's main water system: WEST JORDAN CITY WATER SYSTEM · PWSID UTAH18020 · Purity Score 97 (Excellent) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.

How many Salt Lake County cities had a PFAS sample above a 2024 EPA limit?

1 of 8 Salt Lake County city reports had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing, including Salt Lake City (PFHxS 18.2 ng/L). That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation. PFAS were detected at any level in 3.

Is there lead in Salt Lake County tap water?

Utilities report lead as a 90th-percentile result from home taps. 8 of 8 Salt Lake County cities reported a value above zero, and none was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.

Have Salt Lake County water systems had drinking-water violations?

1 city in Salt Lake County has a health-based violation in the federal SDWIS record within about the last ten years. Each city report lists the contaminant, year and whether it was resolved.

Does Salt Lake County have hard water?

Hardness is published in utility water-quality reports for 1 Salt Lake County city on record; the hardest is Salt Lake City at 20.7 grains per gallon. Hardness affects scale and appliances; it is not a health finding.

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