London, KY Water Safety: 83/100 (2026)
6 ZIP codes · 7 water systems · Updated 2026-06-03
Although water quality varies across any metro, London's systems collectively post above-average compliance scores for KY — and documented violations are few.
How London Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: London, KY
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Distribution of water safety grades across London.
London Water: The Quick Version
- Average lead level: 0.002 mg/L.
- Estimated remediation: $1,483 per household.
Water Systems Serving London
Water supply in London, KY follows a divided structure: 3 utilities account for the largest share of residential service out of 7 total systems, each managing its own distribution network and EPA reporting. Because these systems operate independently, rate decisions and compliance outcomes are determined separately.
Overview
We track water quality and home safety data for 6 ZIP codes in London, Kentucky (population ~43,407), covering 7 community water systems serving approximately 88,267 people region-wide.
No EPA violations recorded across any ZIP codes in London — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for London: B (83/100)
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
London water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0020 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): 6 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
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 40741 | B | Laurel Company Water District #2 | 16,899 |
| 40742 | B | Laurel Company Water District #2 | 16,899 |
| 40743 | B | Laurel Company Water District #2 | 16,899 |
| 40744 | B | Laurel Company Water District #2 | 16,899 |
| 40745 | B | Laurel Company Water District #2 | 16,899 |
| 40750 | B | Laurel Company Water District #2 | 16,899 |
All ZIP Codes in London
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.
London: Remediation Cost in Perspective
When estimated remediation is placed alongside median property values in London, the resulting ratio is low — a finding consistent with a household financial perspective where documented issues can be addressed without a meaningful impact on overall equity position, making this market one of the more favorable contexts for remediation planning.
Remediation costs in London are relatively low compared to home values. The $750–$2,533 estimated range is a small fraction of median property value. Home values are 5% above the Kentucky average.
Protecting Children from Lead in London
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 London 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.
Climate-Related Water Risk for London
Flood history in London spans 8 NFIP claims and 33% flood zone coverage — enough to place it in moderate-exposure territory where flood events are genuinely recurring rather than statistical outliers. That distinction matters for water quality assessment because the connection between flooding and water safety is not uniform across communities. In low-exposure areas, flooding rarely generates the conditions needed to compromise treatment or distribution infrastructure. In high-exposure areas, it can do so repeatedly. Moderate-exposure communities sit in between: flood events occur with enough frequency to make periodic infrastructure stress a reasonable concern, particularly for private well owners and residents in lower-elevation FEMA-designated zones.
London has a moderate flood history with 8 FEMA claims averaging $118,671 per payout. 33% 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>$1,483</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.
Deep Dive Reports
Detailed analysis for London, KY