The 'ole UK-US word difference again.
Your faucet = our tap (water outlet).
I have been using tap water from when I started since that is how I hope to go on in order not to lug distilled water. No adverse reaction so far but only herb and salad green currently. If I had issue, I was going to try filtered or boiled before trying distilled.
When I got the liquid pH test kit, I got something in the neighbourhood fo 6.5 -6.7 which should be fine. Don't know EC yet.. May need to invest in a Bluelab soon.
Do you mean water out of the faucet? Or water in the AG? You must mean out of the faucet. I'll check it and post.
You may find that your plants will do fine in the AG with your water.
There's quite a bit bandied about with using distilled in the AG, I would use your normal water first - if your plants show any adverse reaction, then you need distilled. You may save yourself money.
Have you done any tests on your water, EC & pH?
I don't know anything about my water except that it seems to work fine for the bucket brigade. I've been using distilled in the AG's because it was recommended, and the plants have been doing well. (pretty alkaline, but after the flora series is added, it comes down)
I went to Costco this morning and saw an Osmosis system, but didn't pay much attention to it since I know nothing about it. I guess I'll have to do some research this weekend if you think it might work well. What, exactly, do the plants need to be eliminated from the water?
In my apartment, because it is somewhat underground, I have to run a dehumidfier, so I reuse that water. :P pH7, ppm in the 20s.
Is your water pretty bad Judith, mine has a high pH (7.8) and is classed as 'hard'. However, it still grows my plants well - luckily.
I guess you have a few options:
1. Buy a mains powered distiller, they can sit on your worktop and will probably get you approx. 1 litre per hour. Not sure how cost effective they are to run, the power consumption is quite high. This is a UK site but will give you some idea of what I mean.
2. Reverse Osmosis, these connect to your water supply and filter out the impurities. I think there are two types, one which resides on your counter top and is portable. The other is plumbed in completely below your sink, something like this. These are just some examples, there are many more on the market.
These will all need filter changes at some point.
Non of these are particularly cheap, but, it will probably work out cheaper in the long run. You are going to have to offset the cost of buying distilled water with the cost of one of these units, see how long it takes to break even.
You probably know that normal water filters are not any good, they don't filter out minerals, only organic solvents and certain taste chemicals i.e. chlorine.
Hope some of this helps.