The drinking water serving Dothan and Houston County comes primarily from groundwater sources managed by Dothan Utilities, City of. Water is drawn from underground aquifers, treated through a multi-step process, and distributed to over 31,000 connections within the city. As water flows from the system into homes, concerns about lead often arise, prompting residents to seek clarity on what the data means and how to address it.
Lead Enters Groundwater or Distribution Mainly Through Plumbing Materials, Not the Aquifer
In this region, lead is not typically found naturally in the groundwater supply. Instead, lead presence is more commonly linked to corrosion or leaching from plumbing components such as older pipes, fixtures, and solder within the home's internal system. Municipal treatment and careful water chemistry control limit lead introduction at the water source and during treatment.
Seasonal and Multi-Year Sampling Shows Consistently Low Lead Levels in the Distribution System
Dothan Utilities’ most recent lead sampling, conducted in 2025, indicates a 90th percentile lead concentration of 0.0032 mg/L in the distribution system. This measurement reflects water quality after it reaches customer taps but before entering home plumbing. The data has shown stability over time without fluctuations that would indicate rising lead levels within the system itself.
Public Water System Records Establish General Distribution Water Quality but Not Individual Home Conditions
The EPA’s record for this public water system covers a representative sample of homes to estimate lead levels in the distribution network. However, because lead contamination often occurs inside individual homes due to plumbing, these records cannot specify the exact lead level in any single household’s water. Testing water from your own taps via a certified laboratory is needed to determine specific conditions.
Lead Exposure Depends on Home Plumbing Materials and Their Age, Separate from System Water Quality
Even with a low lead level in the water system, older homes with lead plumbing or solder may still experience elevated lead in tap water. This distinction highlights why two neighbors served by the same utility can have different lead exposure risks. Lead in water often originates within household plumbing rather than the municipal supply.
Lead Issues Differ From Commonly Confused Water Problems Like Hardness or Iron
While hard water and iron can cause staining or scaling, these do not indicate lead contamination. Lead is a distinct element with specific health concerns and must be addressed through targeted testing and treatment. Confusing these issues delays effective action to reduce lead exposure.
Certified Laboratory Lead Tests Provide Quantitative Results That Guide Treatment Decisions
To understand your household’s lead level, a test from a certified laboratory measuring lead concentration in tap water is essential. Such a report will offer precise readings expressed in mg/L. This objective data helps determine whether additional treatment is needed beyond the municipal supply’s baseline quality.
With this understanding of how lead behaves in Houston County’s water system and homes, residents can make informed decisions. The Fleck Lead in Water Filter ships ready to configure as a direct-purchase solution designed to address lead that may enter from household plumbing, providing an added layer of protection tailored to individual water conditions.
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
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