What reaches your kitchen
The USD treats surficial aquifer water with air stripping, lime softening, chlorine and ammonia, and filtration. The 2025 report lists the disinfectant at a highest running annual average of 2.87 ppm and sodium at 25.6 ppm. Lime softening reduces hardness but leaves other dissolved minerals; RO lowers those at one tap.
The 2025 report also lists nitrate at 0.41 ppm against a limit of 10, and disinfection byproducts well under their limits. Those numbers describe the water the USD delivers. An RO changes what comes out of one faucet in your kitchen, which is why it is usually chosen for taste and for people who want a consistent glass of water for drinking, coffee and cooking.
What an under-sink RO handles
- Chloramine taste and odor, through carbon before and after the membrane.
- Dissolved solids, through the membrane.
- Specific contaminants only if the exact model is certified for them, usually under NSF/ANSI 58.
Fitting it in
- Space under the sink.
- A faucet hole or an existing sprayer hole.
- A drain connection.
- Optional line to the fridge.
Many oceanfront and high-rise condos have compact kitchens; a tankless unit can help. See tankless vs. tank RO.
In older single-family homes west of US-1, cabinets are usually roomier, but drain lines may be older; Jorge checks the trap and the shutoff valve before recommending an install. In a rental, ask the landlord first; the unit can be removed later if you move.
Alkaline or standard
The alkaline stage adds minerals after the membrane for taste. Some prefer standard RO. See alkaline vs. standard RO.
During the free chlorine flush
The USD periodically switches from chloramine to free chlorine to clean the pipes; the 2025 flush ran July 1 to July 22. The district notes possible chlorine odor and brief discoloration. An RO's carbon stages handle the chlorine; if water looks discolored, run the cold tap as the district suggests before drawing RO water, so sediment does not load the pre-filter.
Book a test
Jorge measures dissolved solids and chlorine at your tap and shows what RO would change. Call, text or WhatsApp (305) 793-5974.
https://www.rivierabch.com/filestorage/24577/24726/24735/31500/51398/Final_Draft-__Annual_Water_Quality_Report_2025_%282%29_%282%29.pdf
https://www.rivierabch.com/FCFP
Updated 2026-10-17 · Living Waters · Jorge Canela, Water Quality Specialist