Why Every Orlando Family Should Have Reverse Osmosis Drinking Water

If you're buying bottled water for drinking in your Orlando home, you're paying a 300–1,000x markup over filtered tap water for a product that's frequently sourced from the same municipal supply you're trying to avoid. A reverse osmosis system produces water that's cleaner than virtually any bottled brand at a fraction of the cost. Here's the full picture.

What Reverse Osmosis Actually Does

Reverse osmosis is a pressure-driven membrane separation process. Water is pushed through a membrane with pores approximately 0.0001 microns in diameter, so small that virtually no dissolved substance can pass through. The membrane preferentially allows water molecules through while rejecting dissolved minerals, chemicals, and biological contaminants.

A complete under-sink RO system has 4–7 stages:

1. Sediment pre-filter (5 micron): Removes particles that would clog the carbon filters and membrane
2. Carbon block pre-filter: Removes chlorine and chloramines that would degrade the membrane
3. Second carbon stage: Additional chloramine removal (important for Central Florida, which uses chloramines)
4. RO membrane: The core treatment stage, rejects 95–99% of dissolved solids
5. Storage tank: Typically 2–4 gallons of treated water for instant delivery
6. Post-carbon polishing filter: Final taste refinement
7. Optional remineralization: Adds back a controlled amount of calcium and magnesium for taste and pH balance

Removal Performance for Central Florida's Specific Concerns

RO's broad-spectrum removal makes it effective against the range of contaminants found in Orlando metro water:

Hardness minerals (calcium, magnesium): 95–99% removal. RO drinking water is essentially mineral-free unless you add a remineralization stage.

Chloramines: The pre-carbon stages remove chloramines before they reach the membrane. Unlike simple carbon filters, proper RO system design includes enough carbon contact time (or catalytic carbon) to handle Central Florida's chloraminated water.

Trihalomethanes (THMs) and haloacetic acids (HAAs): 95–99% removal via carbon pre-treatment and membrane. This directly addresses the disinfection byproduct concern in municipal water.

PFAS (PFOA/PFOS): NSF International's P473 standard certifies RO membranes that remove >94% of these compounds. For homeowners near contamination sources (military bases, industrial facilities), RO is the most accessible treatment solution.

Lead: >95% removal. For homes with older plumbing, RO at the drinking tap provides direct protection regardless of what happens in the pipes between the street and your kitchen.

Nitrates: 83–95% removal. Critical for families with infants, the EPA MCL for nitrates (10 mg/L) is set specifically to protect infants from methemoglobinemia.

Arsenic: 90–95% removal. Naturally occurring arsenic in Florida's limestone formations makes this relevant for some groundwater-sourced utilities.

Bacteria and viruses: >99.99% removal via membrane exclusion. The 0.0001-micron pore size is orders of magnitude smaller than any microorganism.

The Cost Comparison That Surprises Everyone

The average American family of four spends $1,200–$2,400/year on bottled water. That's a recurring annual expense for a product that:

• Is frequently sourced from municipal tap water (Nestle Pure Life, Aquafina, Dasani are all filtered tap)
• Leaches microplastics from plastic containers (a 2019 study found an average of 325 microplastic particles per liter of bottled water)
• Generates 50 billion plastic bottles annually in the US, most of which aren't recycled
• Must be purchased, transported home, stored, and disposed of

An under-sink RO system installed by Pure Agua costs $600–$1,200 including installation. Annual filter maintenance costs $80–$150. Over a 10-year system life, total cost of ownership is approximately $1,400–$2,700. Compare this to $12,000–$24,000 in bottled water purchases over the same period.

RO water costs approximately $0.15–$0.30 per gallon to produce. Bottled water costs $1.00–$3.00 per gallon at retail. The math is unambiguous.

Connecting to Your Refrigerator

A frequently overlooked option: connecting your under-sink RO system to the refrigerator ice maker and water dispenser. With a simple T-fitting and small-diameter tubing, RO water flows to the fridge. Your ice cubes, chilled water, and kitchen tap all deliver the same filtered water.

This eliminates the internal refrigerator filter cost ($30–$60 every 6 months) while providing superior filtration, most refrigerator filters don't remove hardness, nitrates, or PFAS.

Maintenance: What's Actually Required

RO maintenance is straightforward and infrequent:

• Pre-filters (sediment and carbon): Replace every 6–12 months. Cost: $25–$50
• RO membrane: Replace every 2–3 years for typical residential use. Cost: $50–$120
• Post-carbon polishing filter: Replace every 12–24 months. Cost: $15–$30

Pure Agua includes a filter reminder program with every installation, we notify you when filters are due based on actual usage. Annual service visits are available for customers who want a professional check of membrane performance and system integrity.

Water Pressure Considerations

RO systems require a minimum inlet water pressure of 40 PSI to operate efficiently. Most Orlando and Kissimmee municipal water systems deliver 50–80 PSI, well above the minimum. If your home has a pressure reducing valve (PRV) set low, you may need to adjust it or add a pressure booster pump to the RO system.

Permeate pumps (non-electric pressure-recovery devices) improve RO efficiency by 80%, reducing waste water ratio from 4:1 to approximately 1:1. Pure Agua includes permeate pumps as standard on our RO installations.