Bonita Springs Water Hardness & Quality Report (2026)

Bonita Springs Utilities (BSU) serves approximately 77,000 people in Bonita Springs, Florida (Lee County), operating two wellfields east of Interstate 75. Water is drawn from the Lower Tamiami Aquifer via 19 wells approximately 100 feet deep, processed through lime-softening treatment, and from the brackish Lower Hawthorne/Upper Floridan Aquifer via 15 reverse-osmosis wells at 800–1,000 feet deep. The blended product undergoes corrosion inhibition, filtration, and chlorination before distribution from treatment plants at 11900 E. Terry Street. Contact the utility at 239-992-0711.

The supply taps into underground aquifers amid Southwest Florida's limestone-dominated terrain, with no surface rivers or reservoirs involved. The Lower Tamiami and Lower Hawthorne/Upper Floridan formations are Miocene-era limestone and karst features that dissolve calcium, magnesium, and other minerals into the groundwater, yielding a hard supply with elevated mineral content. This porous bedrock filters water naturally but imparts a mineralised character — including occasional iron or hydrogen sulfide — addressed by the dual lime-softening and reverse-osmosis treatment processes.

As a hard water supply, Bonita Springs water promotes limescale buildup in pipes, water heaters, dishwashers, and washing machines, reducing efficiency and lifespan — expect 20–30% higher energy use in heaters. Fixtures may stain from minerals or iron, and soap lathers poorly, leaving films on skin and hair. Regular vinegar descaling, low-flow aerators, and magnetic descalers help; a whole-house softener is recommended to extend appliance life and improve cleaning. BSU's 2022 CCR shows compliance with all MCLs (zero violations), though three contaminants exceed EPA health guidelines including haloacetic acids; a filter is advisable for sensitive users.