McComb Water Hardness & Quality Report (2026)

The City of McComb Municipal Water Company provides water to about 12,000 people in McComb, Pike County, Mississippi, and nearby areas. All of the city's water comes from several municipal wells that tap into a local groundwater aquifer. McComb doesn't have any surface water treatment plants; water is pumped straight from the wells to treatment facilities. There, it's disinfected and given basic processing before it heads out to homes and businesses through the city's pipes. The supply originates from groundwater within the vast Mississippi Alluvial Plain and Coastal Plain watersheds.

The geology beneath McComb consists of Cenozoic-era unconsolidated sediments. These are mainly sands and gravels mixed with calcareous clays found in the Tertiary Hattiesburg and Pliocene Citronelle Formations. This aquifer contains layers rich in minerals, which contribute to the water's hardness. As the water flows underground, it leaches calcium and magnesium ions from fragments of limestone and shell deposits. This process gives the water its mineralized character, without the dilution that would come from surface runoff.

Homeowners in McComb may notice moderate scale buildup in appliances such as water heaters, dishwashers, and coffee makers. This can decrease their efficiency and shorten their lifespan. Laundry might feel stiff, and soap scum can appear on bathroom fixtures. Heating elements and pipes are particularly vulnerable to mineral deposits over time. To combat this, you can regularly delime appliances annually, use vinegar to soak showerheads, or install a whole-house water softener. A softener is often recommended for hard water supplies like McComb's to help extend the life of your equipment. The 2024 Consumer Confidence Report confirms compliance with EPA standards for pH, lead, and copper at the tap, with no violations.