Public water data for West Mifflin, PA shows a low safety grade — health-based violations appear across a meaningful share of service areas in current EPA records.

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

Overview

We track water quality and home safety data for 2 ZIP codes in West Mifflin, Pennsylvania (population ~18,941), covering 2 community water systems serving approximately 525,565 people region-wide.

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

Home Safety Score

Average Home Safety Score for West Mifflin: D (43/100)

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

West Mifflin water systems draw from: Surface water.

Lead & Copper

• Lead data: not yet available for West Mifflin
• 0 ZIP codes exceed the EPA lead action level

Radon Risk

Dominant radon zone: Zone 1 (High Risk)

• Zone 1 (High): 2 ZIP codes
• Zone 2 (Moderate): 0 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 West Mifflin

• 15122 [D]
• 15123 [D]

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.

How Remediation Costs Compare in West Mifflin

Looking at how documented remediation costs fit within West Mifflin property values, the equity share lands in the moderate tier — a finding that positions the household financial perspective between routine maintenance and a significant budget commitment, where most homeowners can successfully address documented issues by treating the expense as a planned financial priority rather than an unexpected one.

Median Home Value

$131,400

Est. Remediation

$1,800

Remediation as % of home value 1.4%

Remediation costs are moderate relative to home values in West Mifflin. The estimated $1,200–$2,400 range is manageable for most homeowners but still worth budgeting for. Home values are 38% below the Pennsylvania average.

West Mifflin: Flood History & Water Damage Risk

Measured across the NFIP's multi-decade tracking period, West Mifflin shows a moderate flood record — 23 claims and 50% of ZIP codes carrying FEMA flood zone status. For water quality, that combination matters because flood events at this frequency can periodically stress infrastructure: treatment plants, private wells, and distribution systems all face elevated risk during significant flooding.

23

Total FEMA Flood Claims

$7,729

Avg Claim Payout

50%

ZIPs in FEMA Flood Zones

~1

Est. Claims/Year

West Mifflin has a moderate flood history with 23 FEMA claims averaging $7,729 per payout. 50% 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>$1,800</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.