Drinking water tracked for Salt Lake City by UT authorities posts above-average scores — the majority of systems are free from health-based exceedances and the city's grade sits above the state median.

Data: EPA SDWIS Last verified: 2026-06-04

Water Quality Map: Salt Lake City, UT

Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.

A B C D F

Overview

We track water quality and home safety data for 56 ZIP codes in Salt Lake City, Utah (population ~635,938), covering 15 community water systems serving approximately 1,104,553 people region-wide.

No EPA violations recorded across any ZIP codes in Salt Lake City — an excellent indicator of water quality.

Home Safety Score

Average Home Safety Score for Salt Lake City: B (82/100)

The score combines three factors:

Factor	What It Measures
Water Quality	EPA violations and compliance history
Lead Levels	90th percentile lead concentration vs EPA action level
Radon Risk	EPA radon zone classification

Water Sources

Salt Lake City water systems draw from: Groundwater, Surface water.

Lead & Copper

• Average lead level (90th percentile): 0.0025 mg/L (EPA action level: 0.015 mg/L)
• 0 ZIP codes exceed the EPA lead action level

Radon Risk

Dominant radon zone: Zone 2 (Moderate Risk)

• Zone 1 (High): 0 ZIP codes
• Zone 2 (Moderate): 56 ZIP codes
• Zone 3 (Low): 0 ZIP codes

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

Areas with No Violations

All ZIP Codes in Salt Lake City

• 84101 [B]
• 84102 [B]
• 84103 [B]
• 84104 [B]
• 84105 [B]
• 84106 [B]
• 84107 [B]
• 84108 [B]
• 84109 [B]
• 84110 [B]
• 84111 [B]
• 84112 [B]
• 84113 [B]
• 84114 [B]
• 84115 [B]
• 84116 [B]
• 84117 [B]
• 84118 [B]
• 84119 [B]
• 84120 [B]
• 84121 [B]
• 84122 [B]
• 84123 [B]
• 84124 [B]
• 84125 [B]
• 84126 [B]
• 84127 [B]
• 84128 [B]
• 84129 [B]
• 84130 [B]
• 84131 [B]
• 84132 [B]
• 84133 [B]
• 84134 [B]
• 84136 [B]
• 84138 [B]
• 84139 [B]
• 84141 [B]
• 84143 [B]
• 84144 [B]
• 84145 [B]
• 84147 [B]
• 84148 [B]
• 84150 [B]
• 84151 [B]
• 84152 [B]
• 84157 [B]
• 84158 [B]
• 84165 [B]
• 84170 [B]
• 84171 [B]
• 84180 [B]
• 84184 [B]
• 84189 [B]
• 84190 [B]
• 84199 [B]

Data Sources

• Water quality: EPA Safe Drinking Water Information System (SDWIS)
• Lead/copper: EPA Lead and Copper Rule sampling data
• Radon: EPA Map of Radon Zones

Updated daily.

Cost Context: What Remediation Means for Salt Lake City Homeowners

For most homeowners in Salt Lake City, the estimated cost of water and safety remediation represents a proportionally modest share of what properties are worth — placing this area in the lower tier of the remediation share scale.

Median Home Value

$436,600

Est. Remediation

$1,148

Remediation as % of home value 0.3%

Remediation costs in Salt Lake City are relatively low compared to home values. The $498–$1,868 estimated range is a small fraction of median property value. Home values are 12% above the Utah average.

Lead Exposure Risk for Children in Salt Lake City

0.0025

mg/L Avg Lead (Limit: 0.015)

Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

Lead risk in Salt Lake City appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Flood & Climate Risk in Salt Lake City

The NFIP claim record for Salt Lake City — 331 filed incidents — reflects genuine, recurring flood exposure rather than an isolated event or two. When a community accumulates flood claims at this volume and carries 30% of its ZIP codes inside FEMA-designated zones, flood history starts to factor into water quality planning in ways it doesn't for lower-exposure areas. Flooding introduces specific contamination pathways — runoff overwhelming treatment facility intake, surface water infiltrating private wells, and pressure disruptions in distribution systems allowing backflow — all of which become more relevant as flood frequency increases.

331

Total FEMA Flood Claims

$5,865

Avg Claim Payout

30%

ZIPs in FEMA Flood Zones

~17

Est. Claims/Year

Salt Lake City has a moderate flood history with 331 FEMA claims averaging $5,865 per payout. 30% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,148</strong> remediation cost per household.

Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.

Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.