Answer: I understand your desire to conserve water and in some instances gray water (such as from your laundry) is okay to use in irrigation. But, it is never recommended for vegetables - only for ornamental plants. If you use soap rather than detergent, the soap won't harm ornamentals. Detergent will harm them and so will bleach. So, to be on the safe side, use only organic soaps, never use bleach, and direct the gray water only to ornamentals or lawns.
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