Where whole-house systems usually go
A point-of-entry system treats water where it enters the home, so it goes on the main line after the shutoff and before the line branches to fixtures and the water heater. In South Florida homes that often means:
- A garage wall, where the main line enters many homes.
- An outside wall near the main, when there is no garage. Outdoor installs need protection from sun and weather.
- A utility or laundry room in some layouts.
Condos and apartments are different; see condo installation questions.
What the installer needs besides floor space
| Need | Why |
|---|---|
| Access to the main line | The system connects into it, usually with a bypass valve |
| Service clearance | Room above and around tanks to open them and change media |
| A drain | Backwashing filters and softeners send water to drain during regeneration |
| Electrical outlet | Many control valves need power |
| Level, solid base | Filled tanks are heavy |
| Room for salt | Softeners need a brine tank you can refill easily |
Combining treatment adds space
Many homes pair a filter with a softener, or add a pre-filter. Each adds a tank or housing. If you also want drinking water treatment, an under-sink reverse osmosis system lives in the kitchen cabinet instead, with its own space needs. See whole-house vs under-sink filters.
Local rules and HOA questions
The EPA's WaterSense guide notes that some local jurisdictions restrict ion-exchange softeners because of the salt they discharge, and advises checking local requirements before buying. Outdoor equipment can also run into HOA rules about what is visible from the street. Ask before you commit to a location.
Weight, heat and sun
Filled media tanks and brine tanks are heavy, so they need a level, solid surface such as a garage slab or a concrete pad outdoors, not a soft patch of ground that can settle. Heat and direct sun can be hard on plastic tanks, valves and their electronics over time, which is why outdoor equipment is often shaded or covered. Manufacturers list operating temperature limits and placement guidance in the installation manual; ask your installer to show you the relevant page for the model you are considering. Also think about access: you or a technician will need to reach the valve, the bypass and the salt lid for years, so avoid spots blocked by storage shelves, bikes or a car parked tight against the wall.
Questions to ask at the site visit
- Where does my main line enter, and can the system go there?
- Where will the drain line run, and is there an outlet?
- How much clearance does this model need for service?
- Does outdoor placement need a cover or enclosure?
- Will a softener's brine tank be easy to reach for refills?
- Is there room to add a second stage later?
Jorge looks at the install location during the free in-home test and gives you an itemized quote that reflects the plumbing work your site needs. Site conditions are one reason installation quotes differ.
https://www.epa.gov/system/files/documents/2025-01/ws-products-home-water-treatment-guide_v2_508.pdf
https://www.cdc.gov/drinking-water/prevention/about-choosing-home-water-filters.html
Updated 2026-10-17 · Living Waters · Jorge Canela, Water Quality Specialist