I'm trying to figure out whether I should start using filtered or distilled water for my plants since I have hard tap water. I'm wondering if it's more cost-effective to keep buying gallons of distilled water, or if using a mineral filter would be cheaper in the long run. I'd prefer a pitcher-type filter for convenience instead of attaching something directly to my faucet. What do you all usually use, and what's going to save me money over time?
3 Answers
A reverse osmosis (RO) filter is probably the best way to go in the long run. While those pitcher filters like Brita are convenient, they don't filter out as many minerals as you'd need for plants. Plus, buying RO water is usually cheaper than constantly buying distilled water, and you save on all those trips to the store. I invested in a Whirlpool RO system for around $159 a few years back—it's served me well, and the filters only need to be replaced about once a year for $80-100. Just keep in mind that you'll need some space under your sink for the setup.
Have you considered capturing rainwater? It's probably the most cost-effective option if it's allowed in your area. I collect rainwater for my plants and supplement it with distilled water occasionally. If that's not feasible, many places offer the option to fill up a 5-gallon jug with distilled water, which can be cheaper than buying single gallons.
If you're really stuck on using distilled water, look into those refill stations for 5-gallon jugs. They’re usually cheaper per gallon compared to buying bottled distilled water, especially if you're dealing with hard water issues in your area. Just an idea, but it might save you some cash!