Lead Levels on a Laboratory Report Reflect Sampling, Not Just Source Water
A water test report for lead often shows a value measured at a specific sampling point, typically at a tap. The 90th percentile figure reported by the Environmental Protection Agency (EPA) for Dothan Utilities in Houston County is from samples taken within homes or buildings, reflecting the water as it passes through plumbing as well as the source water itself. This 0.0032 mg/L figure from December 2025 is a distribution measurement, not a direct measure of the groundwater supplying the system.
Sampling Depth and Source Type Influence What Levels Are Found
The Dothan public water system draws from groundwater sources. Groundwater chemistry can vary with well depth and location underground. However, lead concentrations found in distribution samples often result from plumbing materials in buildings rather than the groundwater itself, since lead is not naturally common in groundwater at notable levels. Thus, a sample taken at the tap can differ significantly from the water at the wellhead or deeper in the aquifer.
Interpreting Dothan’s Median and Range as a Homeowner
The EPA’s lead 90th percentile value means that 90% of the samples collected in Dothan’s public water system were at or below 0.0032 mg/L. This distribution statistic does not imply any violation or unsafe condition, especially considering that the system has no health-based violations on record out of 27 measured parameters. It is important for homeowners to know that the highest concentrations occur sporadically and often relate to plumbing materials, not the water source itself.
How Lead Enters Groundwater or the Distribution System in Houston County
In this region, lead primarily enters household water through corrosion or leaching from plumbing fixtures and service lines inside buildings. The groundwater supply itself typically contains minimal lead. Municipal water systems like Dothan Utilities treat water to minimize corrosion and maintain water quality. Since lead is found in distribution samples rather than source water, your household plumbing’s age and materials are key factors influencing your tap water’s lead levels.
How the C-Series Lead in Water Filter Addresses Lead Concerns
The C-Series Lead in Water Filter ships ready to configure for household use and is designed to reduce lead concentrations in water as it passes through the filter. The technology targets lead at the point of use, providing an effective barrier for households concerned about lead from internal plumbing or service lines. Regular maintenance of the filter media ensures continued performance and reliability in reducing lead exposure.
Confirming Your Household Water’s Lead Level
To understand your own water’s lead content, the essential step is to request a certified laboratory test for lead at your tap location. This test will provide a precise concentration specific to your home, clarifying the situation beyond regional public system data. A laboratory report of this nature can guide your decision-making and determine whether the C-Series Lead in Water Filter is the appropriate solution for your household’s water quality needs.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2025-12-31. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA SDWIS record for DOTHAN UTILITIES, CITY OF (AL0000681), groundwater supply, serving 97146 people: 0 health-based violations of 27 total; lead 90th percentile 0.0032 mg/L