When Households in New Zealand Consider Reverse Osmosis
Reverse osmosis systems are commonly installed as under-bench drinking water systems connected to a dedicated kitchen tap.
Households may consider reverse osmosis filtration when they want to reduce:
- nitrates in groundwater
- fluoride in municipal water supplies
- heavy metals or dissolved contaminants
- elevated total dissolved solids
Because RO membranes are extremely fine, these systems are typically used specifically for drinking and cooking water, rather than for whole-house filtration.
Many homes combine multiple filtration approaches. For example, a whole-house filtration system may treat water entering the home, while a reverse osmosis system provides additional purification at the kitchen sink.