Hialeah Gardens Water Hardness & Quality Report (2026)

Hialeah Gardens, Florida, in Miami-Dade County in northwestern Miami-Dade adjacent to Hialeah and near the Everglades Agricultural Area boundary, receives its municipal water from Miami-Dade WASD or the City of Hialeah Gardens Water Division, drawing from the Biscayne Aquifer through well fields in the western Miami-Dade area. Hialeah Gardens is positioned in the western reaches of Miami-Dade's developed urban zone, close to the boundary where the highly urbanized coastal strip meets the agricultural fringe of the Everglades system.

The very hard 295 mg/L hardness and extreme TDS of 956.1 mg/L are substantially higher than most other Biscayne Aquifer communities in this dataset, reflecting the western zone's more concentrated mineral character. The Biscayne Aquifer throughout Miami-Dade is composed of Miami Limestone and Fort Thompson Formation Pleistocene carbonates, but in the western Hialeah area, the aquifer receives reduced freshwater recharge from natural Everglades sheet flow (disrupted by decades of drainage canals and development) and greater influence from deeper, more mineralized aquifer zones. Agricultural drainage from the Everglades Agricultural Area to the north also contributes elevated mineral and dissolved solids loads to regional groundwater in this sector.

At 295 mg/L and TDS approaching 1,000 mg/L, Hialeah Gardens residents face very hard water — one of the hardest in the Miami-Dade dataset. Scale deposits form immediately on all water contact surfaces, dishwashers produce scaled glassware requiring softener treatment, and the high TDS produces a pronounced mineral taste in unfiltered drinking water. A whole-house water softener is strongly recommended. The PFAS level of 11.8 ppt — tied for the highest in this batch — adds critical urgency: a certified reverse osmosis drinking water system is essential for this community, addressing both the extreme mineral content and the PFAS contamination in a single treatment step.