Graywater pH for Acid-Loving Plants: GAIN Detergent Test Results

UGA soil lab tested graywater from a GAIN detergent load: pH 6.4, alkalinity 40—comparable to well water (pH 7.06, alkalinity 56). Sodium and most elements were low; only boron in the first wash might harm sensitive plants if concentrated in one spot. Rotate application areas.

Graywater should NEVER be used on vegetable gardens due to disease risk. Most water providers exempt food gardens from restrictions.