ZIP Code 40211 Water Quality & Testing Report
Louisville, KY · Jefferson County County · Updated for 2026
Is Tap Water Safe to Drink in ZIP 40211 (Louisville, KY)?
Caution / Filtration Recommended: Tap water in ZIP code 40211 (Louisville, KY) has compliance concerns, earning an EPA Safety Grade of C (65/100) due to 0 health violation(s) and 1.1 ppb lead. While treated by Louisville Water Company, residents are advised to use an NSF/ANSI 53 certified water filter for drinking and cooking.
Water Safety Grade
Fair — Some compliance concerns
Health Violations
0
Total Violations
0
Lead Risk
High
Contaminants
0
About Tap Water in ZIP Code 40211
Tap water in ZIP code 40211 (Louisville, KY) is distributed by Louisville Water Company (EPA ID: KY0560258), serving approximately 764,769 residents. Based on EPA Safe Drinking Water Act compliance records, this system receives a water safety grade of C with a composite quality score of 65/100.
Water System
Louisville Water Company
EPA ID: KY0560258
Water Source
Surface Water
Population Served
764,769 residents
County
Jefferson County County, Kentucky
Lead Levels in ZIP 40211
EPA action level: 15 ppb | Public health goal: 0 ppb
Lead Level: 1.1 ppb — Very Low
Lead exposure risk in 40211 is rated High. EPA models estimate a 59% exposure probability based on housing and infrastructure age.
From annual CCR filing
From annual CCR filing
EPA model estimate based on housing age and infrastructure
Water Hardness & Mineral Content
Grains per gallon (GPG) & Parts per million (PPM / mg/L)
Water in ZIP 40211 is Hard (134 mg/L / 7.8 GPG). Residents may notice white mineral spots on glassware, reduced soap efficiency, and mineral scale on faucets and showerheads.
Grains per gallon
Parts per million CaCO3
Official EPA SDWIS Database Entry
Utility: Louisville Water Company · PWSID: KY0560258
Violation History
Past 5 years — EPA SDWIS data
Louisville Water Company has recorded zero violations in the EPA compliance database over the past 5 years.
Regulatory compliance risk for this utility is rated Low based on past reporting and enforcement records.
Contaminants Detected
Contaminants with health-based violations on record
No health-based contaminant violations are on record for ZIP code 40211 under the Safe Drinking Water Act.
From Consumer Confidence Report:
Chlorine Residual (Chloramines) (3.18 ppm); Haloacetic Acids (32.3 ppb)
Water Source & Environmental Factors
Surface Water
This system draws water from lakes, rivers, or reservoirs. Surface water is treated to remove sediment, microorganisms, and chemical contaminants before reaching taps.
Highest potential
Estimated annual flood-related costs per property
% of household income spent on energy — indicator of older infrastructure
EPA Radon Zone 1 — highest potential for radon in indoor air. Homeowners should test their home for radon and consider mitigation if levels exceed 4 pCi/L.
Water Quality Testing in ZIP 40211
Tap Water & Well Testing Recommendations
Residents in ZIP code 40211 served by Louisville Water Company can test tap water or private well systems to verify water purity. Testing detects hidden contaminants before they impact family health.
Tap Water Testing Steps
- 1.Conduct a certified lead check if your home was constructed before 1986.
- 2.Use certified lab testing kits rather than uncalibrated test strips for regulated compliance.
- 3.Sample water from both your kitchen faucet and water heater to compare line purity.
Private Well Testing Steps
- •Test for Coliform bacteria and Nitrates annually.
- •Test for heavy metals, radon, and PFAS every 3 years.
- •Send samples to a state-certified drinking water laboratory recognized by Kentucky Department for Environmental Protection.
🛡 What Should You Do? — ZIP 40211 Recommendations
Some compliance concerns — take precautions
- ⚠ Use a certified NSF/ANSI 53 filter for drinking and cooking water if you have young children
- ⚠ Never give unfiltered tap water to infants in formula — use certified bottled or filtered water
- ⚠ Request a copy of the Consumer Confidence Report to see what was detected and when
- ⚠ Call the EPA Safe Drinking Water Hotline: 1-800-426-4791
Recommended Water Treatment Systems:
NSF 53 Lead Pitcher Filter
Specifically certified to reduce lead and copper at the tap.
NSF 58 Under-Sink RO System
Advanced filtration for PFAS, fluoride, nitrates, and organic chemicals.
Frequently Asked Questions — ZIP 40211 Water Quality
Is tap water safe to drink in ZIP code 40211?+
How do I get my water tested in ZIP 40211 (Louisville, KY)?+
How hard is the tap water in 40211?+
Should I test private well water in 40211?+
What is the lead level in 40211 tap water?+
Is there an active boil water notice in 40211?+
Who provides tap water to 40211?+
What water filter should I use in 40211?+
Data Sources & Methodology
Water quality data for ZIP code 40211 is compiled from the EPA Safe Drinking Water Information System (SDWIS), EPA ECHO enforcement database, UCMR5 unregulated contaminant monitoring, and Consumer Confidence Reports filed by Louisville Water Company. Safety scores are composite metrics derived from violation history, lead levels, enforcement actions, and infrastructure risk indicators. Data reflects a 5-year monitoring window. Last dataset update: 2024. View EPA source data →