Louisville Water Company
EPA ID: KY0560258 · 764,769 people served · 87 ZIP codes
ZipCheckup's reading of EPA SDWIS for Louisville Water Company (KY0560258): 483 confirmed lead service lines. In the most recent five-year monitoring window, Louisville Water Company posted zero EPA violations serving 764,769 residents.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Louisville Water Company Source: EPA SDWIS service area boundaries.
Service area boundary - Grade C
Service Area Demographics
The Louisville Water Company serves a community with a median household income of $73,502 and an estimated 940,062 residents across its service area. Approximately 62% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 33% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Louisville Water Company's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 203 detections recorded. 51 exceed federal EPA limits (4 ppt for PFOA/PFOS). 51 exceed state limits.
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
LOUISVILLE WATER COMPANY (EPA ID: KY0560258) is a community water system in Kentucky that serves approximately 764,769 people from surface water sources.
This system provides water to 87 ZIP codes across 21 communities.
Average Home Safety Score: C (61/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 40201 | 0.0011 mg/L | No | N/A |
| 40202 | 0.0011 mg/L | No | N/A |
| 40203 | 0.0011 mg/L | No | N/A |
| 40204 | 0.0011 mg/L | No | N/A |
| 40205 | 0.0011 mg/L | No | N/A |
| 40206 | 0.0011 mg/L | No | N/A |
| 40207 | 0.0011 mg/L | No | N/A |
| 40208 | 0.0011 mg/L | No | N/A |
| 40209 | 0.0011 mg/L | No | N/A |
| 40210 | 0.0011 mg/L | No | N/A |
| 40211 | 0.0011 mg/L | No | N/A |
| 40212 | 0.0011 mg/L | No | N/A |
| 40213 | 0.0011 mg/L | No | N/A |
| 40214 | 0.0011 mg/L | No | N/A |
| 40215 | 0.0011 mg/L | No | N/A |
| 40216 | 0.0011 mg/L | No | N/A |
| 40217 | 0.0011 mg/L | No | N/A |
| 40218 | 0.0011 mg/L | No | N/A |
| 40219 | 0.0011 mg/L | No | N/A |
| 40220 | 0.0011 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: 50 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 37 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
This system serves 87 ZIP codes:
40010 · 40013 · 40014 · 40018 · 40023 40025 · 40026 · 40027 · 40031 · 40041 40047 · 40056 · 40059 · 40109 · 40110 40118 · 40129 · 40150 · 40165 · 40166 40177 · 40201 · 40202 · 40203 · 40204 40205 · 40206 · 40207 · 40208 · 40209 40210 · 40211 · 40212 · 40213 · 40214 40215 · 40216 · 40217 · 40218 · 40219 40220 · 40221 · 40222 · 40223 · 40224 40225 · 40228 · 40229 · 40231 · 40232 40233 · 40241 · 40242 · 40243 · 40245 40250 · 40251 · 40252 · 40253 · 40255 40256 · 40257 · 40258 · 40259 · 40261 40266 · 40268 · 40269 · 40270 · 40272 40280 · 40281 · 40282 · 40283 · 40285 40287 · 40289 · 40290 · 40291 · 40292 40293 · 40294 · 40295 · 40296 · 40297 40298 · 40299
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Louisville Water Company (KY0560258) on EPA.gov.
Frequently Asked Questions
Is Louisville Water Company water safe to drink?
Based on EPA records, Louisville Water Company has no recorded violations in the past 5 years - a positive indicator of water quality management.
How many people does Louisville Water Company serve?
Louisville Water Company serves approximately 764,769 people across 87 ZIP codes in Kentucky.
Where does Louisville Water Company get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
How to cite this page
ZipCheckup. (2026). Louisville Water Company, KY: Serves 765K People - 61/100. https://zipcheckup.com/water-system/ky0560258/
@misc{zipcheckup-water-system-ky0560258,
author = {{ZipCheckup}},
title = {{Louisville Water Company, KY: Serves 765K People - 61/100}},
year = {2026},
url = {https://zipcheckup.com/water-system/ky0560258/}
}
Data as of April 2026.
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Louisville Water Company (EPA ID: KY0560258) - request the latest Consumer Confidence Report or ask about specific contaminants.