Water systems across Lexington produce average compliance results for KY overall — pockets with documented violations exist, and the variation between areas makes checking the specific system serving a given address the most useful step for residents here.

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

Water Quality Map: Lexington, KY

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 39 ZIP codes in Lexington, Kentucky, covering 8 community water systems serving approximately 321,882 people.

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

Home Safety Score

Average Home Safety Score for Lexington: C (55/100)

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

Lexington water systems draw from: Surface water.

Lead & Copper

• Average lead level (90th percentile): 0.0090 mg/L (EPA action level: 0.015 mg/L)
• 0 ZIP codes exceed the EPA lead action level

Radon Risk

Dominant radon zone: Zone 1 (High Risk)

• Zone 1 (High): 39 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 Lexington

• 40502 [C]
• 40503 [D]
• 40504 [D]
• 40505 [C]
• 40506 [D]
• 40507 [C]
• 40508 [C]
• 40509 [C]
• 40510 [C]
• 40511 [C]
• 40512 [D]
• 40513 [C]
• 40514 [C]
• 40515 [D]
• 40516 [C]
• 40517 [C]
• 40522 [D]
• 40523 [D]
• 40524 [C]
• 40526 [D]
• 40533 [D]
• 40536 [D]
• 40544 [D]
• 40546 [D]
• 40550 [D]
• 40555 [D]
• 40574 [C]
• 40575 [D]
• 40576 [D]
• 40577 [D]
• 40578 [D]
• 40579 [D]
• 40580 [D]
• 40581 [D]
• 40582 [D]
• 40583 [D]
• 40588 [D]
• 40591 [D]
• 40598 [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.

Cost Context: What Remediation Means for Lexington Homeowners

Setting Lexington remediation figures against its property market, the resulting ratio sits comfortably in the low tier — a classification that reflects the kind of household financial position where most homeowners can identify documented issues, schedule the work, and absorb the cost without it registering as a significant budget disruption.

Median Home Value

$289,900

Est. Remediation

$1,964

Remediation as % of home value 0.7%

Remediation costs in Lexington are relatively low compared to home values. The $1,300–$2,656 estimated range is a small fraction of median property value. Home values are 94% above the Kentucky average.

Lead Exposure Risk for Children in Lexington

0.009

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 Lexington 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 Lexington

FEMA data shows 41% of Lexington's ZIP codes mapped into designated flood zones, paired with an NFIP record of 465 claims. That footprint places local flood exposure in the range where it warrants attention without rising to high-severity planning territory.

465

Total FEMA Flood Claims

$15,295

Avg Claim Payout

41%

ZIPs in FEMA Flood Zones

~23

Est. Claims/Year

Lexington has a moderate flood history with 465 FEMA claims averaging $15,295 per payout. 41% 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>$1,964</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.