Hialeah Gardens Water Hardness & Quality Report (2026)

The Hialeah Gardens Water and Sewer Department serves approximately 22,200 residents in Hialeah Gardens, Florida, within Miami-Dade County. The utility sources all drinking water from groundwater wells tapping the Biscayne and Upper Floridan Aquifers. Water is treated at regional facilities including the Hialeah, John E. Preston, and Alexander Orr water treatment plants, as well as the South Dade Water Supply System for southern areas. This groundwater-dependent system ensures a reliable supply for the community's residential and commercial needs.

The supply originates from the Biscayne Aquifer system in the Greater Everglades watershed, underlain by Quaternary sands and Pleistocene Miami Limestone, overlying the deeper Upper Floridan Aquifer with Eocene Avon Park Formation limestones. This karstic geology, prevalent in South Florida, features highly soluble carbonate rocks that naturally impart minerals to percolating groundwater. The limestone dissolution shapes a moderately mineralised supply, characteristic of Florida's aquifer systems where calcium and magnesium are abundant from ancient marine deposits.

Moderately hard water can lead to moderate scale buildup in pipes, water heaters, and dishwashers, causing reduced efficiency and higher energy use over time. Affected appliances include washing machines, coffee makers, and faucets, where spots may appear on glassware. Maintenance tips include using vinegar rinses for fixtures, installing scale inhibitors, or periodic descaling. A water softener is recommended for households noticing soap scum or appliance issues. The 2026 report indicates the water meets federal legal limits, though two contaminants exceed EPA health guidelines (MCLGs), prompting filter recommendations for vulnerable groups; treatment involves disinfection and likely lime softening at regional plants.