Water systems in Winston Salem, NC serve households with few reported safety events.

Data: EPA SDWIS Last verified: 2026-06-03

Water Quality Map: Winston Salem, NC

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 25 ZIP codes in Winston Salem, North Carolina (population ~275,105), covering 4 community water systems serving approximately 565,100 people region-wide.

No EPA violations recorded across any ZIP codes in Winston Salem — an excellent indicator of water quality.

Home Safety Score

Average Home Safety Score for Winston Salem: B (73/100)

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

Winston Salem water systems draw from: Groundwater.

Lead & Copper

• Lead data: not yet available for Winston Salem
• 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): 22 ZIP codes
• Zone 3 (Low): 3 ZIP codes

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

Areas with No Violations

All ZIP Codes in Winston Salem

• 27101 [B]
• 27102 [A]
• 27103 [B]
• 27104 [C]
• 27105 [B]
• 27106 [C]
• 27107 [B]
• 27108 [B]
• 27109 [B]
• 27110 [B]
• 27111 [B]
• 27113 [B]
• 27114 [B]
• 27115 [B]
• 27116 [B]
• 27117 [B]
• 27120 [B]
• 27127 [B]
• 27130 [B]
• 27150 [B]
• 27152 [A]
• 27155 [B]
• 27157 [B]
• 27198 [B]
• 27199 [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.

Winston Salem: Remediation Cost in Perspective

Given current Winston Salem valuations, the remediation-to-property-value ratio is low — most homeowners are looking at a proportionally modest share that fits within routine financial planning.

Median Home Value

$201,700

Est. Remediation

$904

Remediation as % of home value 0.4%

Remediation costs in Winston Salem are relatively low compared to home values. The $336–$1,548 estimated range is a small fraction of median property value. Home values are 14% below the North Carolina average.

Climate-Related Water Risk for Winston Salem

Flood risk in Winston Salem occupies the middle ground: 385 NFIP claims and 40% of local ZIP codes within FEMA flood zones. At that level, the risk pathways connecting flooding to water quality — treatment system stress, well infiltration, distribution backflow — become relevant considerations during significant flood events, even if day-to-day water quality is unaffected by flood history.

385

Total FEMA Flood Claims

$13,215

Avg Claim Payout

40%

ZIPs in FEMA Flood Zones

~19

Est. Claims/Year

Winston Salem has a moderate flood history with 385 FEMA claims averaging $13,215 per payout. 40% 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>$904</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.