How the Fleck System Removes Lead for Residential Use
Lead removal through filtration media
The Fleck Lead in Water Filter uses filtration technology designed to reduce lead particles that originate within household plumbing or the distribution system. This approach helps lower lead concentrations from tap water before use.
Neutralization and capture of lead ions
The system's media can capture dissolved lead ions, preventing them from reaching your faucet. This process effectively reduces lead exposure risks associated with water consumption and contact.
Differences Between Public Water Records and Private Well Testing
Public system records indicate distribution-wide lead levels
Madison Water Utility's 2023 data shows a 90th percentile lead concentration of 0.0018 mg/L in the distribution system, reflecting levels found in plumbing across many homes, not source water.
Private well testing is required for individual water quality
Since lead levels can vary widely by household plumbing condition, testing your own water is necessary to know your home's specific lead concentration.
Influence of Sample Depth, Well Depth, and Water Source
Groundwater source characteristics
Madison's water comes from groundwater, which typically has different lead profiles compared to surface water. However, lead may enter water through aging pipes rather than the source itself.
Sample depth reflects household plumbing interaction
Lead measurements reported by Madison Water Utility come from taps and household plumbing, representing conditions that include potential lead leaching after the water leaves the source.
Understanding Aesthetic Secondary Standards Versus Health-Based Limits
Aesthetic issues relate to taste and staining, not safety
Secondary standards for lead address aesthetic factors such as water discoloration or metallic taste. These are not health-based standards and do not indicate water is unsafe if exceeded.
Health-based violations are specific and documented
Madison Water Utility had two EPA health-based violations on record, but the lead 90th percentile concentration sampled in 2023 was well below EPA action levels, reflecting compliance for lead in the distribution system.
Symptoms and Signs Related to Lead in Household Water
Symptoms may include metallic taste or staining
Lead itself is tasteless and odorless, but problems with lead plumbing can cause metallic taste or discoloration, which might indicate water contact with lead-containing materials.
No visible water changes specifically diagnose lead
Water that looks clear and tastes normal may still contain lead, so visual or taste checks alone do not confirm safety.
How Lead Enters Groundwater and Distribution in Madison
Corrosion of household plumbing supplies lead
Lead typically enters tap water through corrosion of pipes, solder, or fixtures within the household plumbing system rather than the groundwater source.
Distribution system materials can contribute
Lead in older distribution pipes or service lines can also leach into water, influencing household lead levels reported by Madison Water Utility.
Following failure of existing treatment equipment, selecting the Fleck Lead in Water Filter, which ships ready to configure, can help reduce lead concentrations measured in your household water. It is important to base treatment on your specific water test results to meet your household’s lead reduction needs effectively.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2023-09-30. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA SDWIS record for MADISON WATER UTILITY (WI1130224), groundwater supply, serving 272000 people: 2 health-based violations of 4 total; lead 90th percentile 0.0018 mg/L
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