> Reverse osmosis systems for the main drinking water sources are around $200 each now

A whole house RO system is several thousand up to ten thousand dollars. A whole house heavy metal filter would be around $200. For this particular case they can likely do without full RO.

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antif 5 days ago | parent | next [-]

With RO, could* focus on kitchen and bathroom sinks; amortized cost should be $5-10 per-month per-sink.

Toilet, shower, and laundry could all be low-risk with unfiltered service tap water.

	▲	adgjlsfhk1 5 days ago \| parent [-]
		honestly just doing kitchen should be enough to get 90% of the benefit

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cma 4 days ago | parent | prev [-]

I'm not talking about whole house but just for your kitchen sink, but ic a heavy metal one for the whole house is just $200 that's even better though, especially if they have kids who might drink from everywhere.

But most water for drinking/cooking is going to come from the kitchen sink and refrigerator, which if it is too expensive to plumb into the one for the sink you can disconnect and use ice trays.