Tillmans Corner Water Hardness & Quality Report (2026)

Tillmans Corner, an unincorporated community in Mobile County, Alabama, receives its drinking water from the Mobile Area Water and Sewer System (MAWSS), the primary utility serving the greater Mobile metropolitan area. MAWSS sources water from a combination of surface water reservoirs — including Big Creek Lake and Lake Forest — supplemented by groundwater from local aquifers. Treatment occurs at the Big Creek Water Treatment Plant, processing raw water through coagulation, sedimentation, filtration, and disinfection before distribution to over 300,000 residents across Mobile County.

The supply draws from the Big Creek drainage basin within the Mobile Bay watershed, part of the broader Tensaw River Delta system in the Gulf Coastal Plain. Underlying geology features Tertiary sands and clays overlying the Floridan Aquifer System's limestone layers, which are prone to karst dissolution. Calcium and magnesium ions leach from these carbonate formations into both groundwater and surface sources, yielding moderately mineralised water chemistry that distinguishes the supply from softer upland surface waters with less carbonate bedrock influence.

Moderately hard water leads to scale buildup in appliances such as water heaters, dishwashers, and washing machines, reducing efficiency over time and leaving spots on glassware. Showers and fixtures may accumulate soap scum, requiring more detergent. Annual deliming of heaters and use of rinse aids helps mitigate effects. A water softener is recommended for households noticing persistent scaling. MAWSS water maintains a pH of 7.0–8.5, meeting EPA standards; the utility complies with lead and copper tap rules through corrosion control, PFAS levels are monitored and below advisory thresholds, and disinfection byproducts are managed below MCLs per recent Consumer Confidence Reports.