Whole-House Filtration vs. Point-of-Use Treatment
Should treatment go where water enters the home, or at the tap you drink from? In most projects the answer involves both.
Treatment location is a design decision. Equipment installed where the water service enters the building treats everything downstream. Equipment installed at a single fixture treats only the water going to that fixture. Both have a place, and they solve different problems.
Comparison
| Whole-house | Point-of-use |
|---|---|
| Protects plumbing, fixtures and appliances | Focused on drinking and cooking water |
| Sized to the property's peak flow rate | Sized to a single fixture's demand |
| Typical for sediment, hardness and general filtration | Typical for reverse osmosis and polishing filters |
| Installed at the service entry | Installed under a sink or at a dispenser |
Why most homes use both
Whole-home equipment handles the things that affect the entire property — scale on fixtures, sediment reaching appliances, general filtration. A point-of-use system then adds a focused stage for the water you actually drink. Running the whole house through a drinking-water-grade process is rarely practical or necessary.
Sizing matters as much as technology. An undersized whole-home unit can restrict flow; an oversized one can cost more than the results justify. Both are avoided by measuring flow and testing water before selecting equipment.
Related pages on our site
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We evaluate the water and the plumbing before recommending anything.
