Adding Clothes Washer Water to Cistern
We have a cistern into which all the roof run-off empties, thanks to my husband's re-routing of all the spouting. What I'm wondering is this: I'd like to empty the clothes washer water into the same cistern. Can I do so without creating problems with bacteria build-up, and/or is there anything I can safely put into the cistern to "purify" the water and still be able to use it for the garden?
Thanks in advance for any information.