Unlike many cities its size in CA, Buena Park keeps health-based violation rates low — systems here score at or above the state average for tap water safety, with no systemic concerns flagged in the current data set.

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

Overview

We track water quality and home safety data for 4 ZIP codes in Buena Park, California (population ~82,727), covering 5 community water systems serving approximately 741,224 people region-wide.

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

Home Safety Score

Average Home Safety Score for Buena Park: A (86/100)

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

Buena Park water systems draw from: Surface water.

Lead & Copper

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

Radon Risk

Dominant radon zone: Zone 3 (Low Risk)

• Zone 1 (High): 0 ZIP codes
• Zone 2 (Moderate): 0 ZIP codes
• Zone 3 (Low): 4 ZIP codes

Areas with No Violations

All ZIP Codes in Buena Park

• 90620 [A]
• 90621 [B]
• 90622 [A]
• 90624 [A]

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.

Buena Park: Remediation Cost in Perspective

The household financial picture for Buena Park homeowners is proportionally favorable — addressing documented issues claims a small slice of equity, and the cost-to-value ratio puts this area well within the manageable tier.

Median Home Value

$782,000

Est. Remediation

$1,800

Remediation as % of home value 0.2%

Remediation costs in Buena Park are relatively low compared to home values. The $1,200–$2,600 estimated range is a small fraction of median property value. Home values are 6% above the California average.

Climate-Related Water Risk for Buena Park

Measured across the NFIP's multi-decade tracking period, Buena Park shows a moderate flood record — 22 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.

22

Total FEMA Flood Claims

$7,689

Avg Claim Payout

50%

ZIPs in FEMA Flood Zones

~1

Est. Claims/Year

Buena Park has a moderate flood history with 22 FEMA claims averaging $7,689 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.