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1. What 'Detected', 'Median', and 'Range' Mean in Wyandotte County Lead Sampling

Detection Does Not Mean Violation

Government sampling of the Kansas City Board of Public Utilities system serving Wyandotte County found lead present at a 90th percentile concentration of 0.0075 mg/L in 2023. This detection reflects plumbing conditions in the distribution system, not raw source water or any single home’s water quality. No health-based violations have been recorded.

Median and Range Represent Distribution Variability

Lead levels vary across samples. The median indicates the middle value of samples taken, while the range shows the spread between lowest and highest detected figures. These measures help understand common levels but do not specify conditions in individual homes.

2. What a Certified Laboratory Test Reports and How to Read It

Sampling Your Household’s Water

To know your home’s lead levels, water must be sampled and analyzed by a certified laboratory following EPA protocols. The report will provide concentration values, often highlighting the 90th percentile if multiple samples are taken.

Interpreting Your Report

Comparing your lab result to public system data shows if your water differs significantly. Lab results do not reveal causes—such as internal plumbing materials or water usage patterns—that also influence lead presence.

3. Sample Size and Its Effect on Confidence

Number of Samples Behind Public Data

The Kansas City system sampling represents many homes — over 50,000 connections supplying more than 150,000 people. This large sample size lends reliability to the system-wide data but cannot predict individual conditions.

Limitations of Small Household Sampling

A single or few samples at one residence do not represent community-wide conditions. Multiple samples over time improve confidence in a household’s true lead level.

4. Seasonal and Multi-Year Variations in Lead Levels

Sampling Dates and Trends

Lead data from Wyandotte County includes measurements taken through late 2023. Public water systems monitor trends over years to detect changes, but individual home levels may fluctuate more due to plumbing changes or water use shifts.

What Affects Lead Variability

Seasonal water chemistry changes can influence lead release from pipes. System treatments aim to minimize such effects but cannot control all household factors.

5. Household Signs Linked and Not Linked to Lead

Possible Indicators

Water discoloration, metallic taste, or staining can prompt lead concerns but are not definitive indicators. Lead in water is colorless and tasteless at typical levels.

What Does Not Indicate Lead

Cloudy water, odors, or common mineral taste changes generally relate to other constituents, not lead.

6. Influence of Sample Depth, Well Depth, and Source Type

Surface Water Source Effect

Wyandotte County’s system uses surface water rather than groundwater wells. Surface water typically has lower lead content at the source but lead may enter from distribution or household plumbing.

Sample Collection Impact

First-draw samples from faucets often reveal highest lead levels. Flushed samples may show lower values by clearing standing water in pipes.

Conclusion: The Definitive Step for Your Home

The key to deciding if specialized treatment is needed is a certified laboratory test of your household water, collected according to EPA protocols. A test report showing lead concentrations near or above public system levels suggests evaluating treatment options like the Fleck Lead in Water Filter, which ships ready to configure and offers targeted lead reduction. Clear knowledge from testing will best guide your water treatment choice.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2023-12-31. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA SDWIS record for KANSAS CITY BOARD OF PUBLIC UTILITIES (KS2020906), surface water supply, serving 152960 people: 0 health-based violations of 14 total; lead 90th percentile 0.0075 mg/L