The system itself
- Number of stages and whether there is a remineralization (alkaline) stage.
- Tank or tankless. Tankless units save cabinet space and often cost more. See tankless vs. tank RO.
- Faucet style and finish.
- Certification, such as NSF/ANSI 58 for the specific model.
Installation in your kitchen
| Factor | Effect on the quote |
|---|---|
| Countertop | Laminate is simple; granite, quartz or porcelain take more work to drill. |
| Existing hole for a sprayer or soap dispenser | Can often be reused for the RO faucet. |
| Cabinet space | Garbage disposals and deep sinks leave less room for a tank. |
| Drain connection | Needed for the RO's wastewater line. |
| Refrigerator or ice maker line | Optional extra tubing and fittings. |
| Water pressure | Low pressure may call for a booster pump. |
Your water matters too
The carbon pre-filters in an RO unit work to protect the membrane from chloramine, which both NMB Water and Miami-Dade WASD use. Higher chloramine or dissolved solids can shorten filter life. If you are on NMB Water, your water already includes a share of plant-treated reverse osmosis water from the Floridan Aquifer blended in, which can mean lower dissolved solids at the tap. The test shows where your home stands.
Ongoing costs to ask about
- Pre-filter and post-filter replacement intervals.
- Membrane replacement interval.
- Remineralization cartridge replacement for alkaline units.
- The drain ratio, meaning how much water goes down the drain per gallon of filtered water.
- Whether service visits are included.
See RO filter replacement for what to look for.
Questions to ask before you sign
- Is the quoted model certified, and for which claims? Ask for the listing.
- Is the faucet hole, drain saddle and any ice-maker line included?
- Which filters come with the system and when is the first change due?
- Who do you call if there is a leak or a drop in flow, and is that visit included?
- What does the warranty cover, and for how long, in writing?
Clear answers to these make two RO quotes much easier to compare, and they help you avoid surprise charges after installation in your Miami Gardens kitchen.
Compared with bottled water
Many Miami Gardens families weigh RO against buying cases or jugs. The bottled water vs. RO calculator lets you plug in your own numbers.
Financing and booking
Living Water offers financing through its financing partners; apply with a credit application, and a co-applicant can apply with you. To start, call, text or WhatsApp (305) 793-5974.
https://www.citynmb.com/DocumentCenter/View/14691/2025-CCR-ENGLISH-web-version
https://www.miamidade.gov/water/library/reports/water-quality-2024.pdf
Updated 2026-10-17 · Living Waters · Jorge Canela, Water Quality Specialist