Bottled spring water will be just fine in your grow. Your soil and the microbes in it will work with the plant to control the ph of the rhizosphere. This is why organic growers don’t worry about the ph levels. To take it a step further, when using water with below 50 ppms ph becomes almost irrelevant, especially in your specific soil. I know this from education, and personal experience.
Bottled water gets expensive quickly, especially once you’re deep into flower and are having to give a gallon every couple days. I HIGHLY recommend picking up a cheap system like this:
With a system like that, water will no longer be a variable in your grow. It may be overkill but as
@OGpapa said, I don’t trust people messing with my drinking water. There are multiple instances of municipal water managers tampering with the water supply then forging the water reports. It’s just not worth the headache. Not to mention, if you look at what’s “acceptable” for human consumption it’s horrifying. Just because it’s fit for consumption doesn’t mean it should be consumed.
Once you switch over to RO you will be able to smell and taste the chlorine/chloramine in your tap water. I drink at minimum, 64 ozs of water a day, usually closer to 128. Before my RO unit I would get stomach aches after so much tap water. After the RO unit I can drink as much as I want without ever feeling ill. That was enough for me. I don’t even give my dog tap water.
If the waste water is a concern you don’t have to drain it. You can run the line to a container and use that water for a variety of things like cleaning, watering the lawn, etc.
Good luck Chris, it makes me happy to see the progress you’re making!
Make sure to keep me updated when possible! Hopefully it’s positive changes!