What is the proper handling of rinse water during sprayer cleaning?

• A. Pour rinse water into a nearby ditch.
• B. Use rinse water to spray on crops.
• C. Drain and dispose of rinse water per label; avoid discharge to the environment beyond label directions.
• D. Reuse rinse water for future mixing without testing.

Answer: (C)

Rinse water from sprayer cleaning is rinseate and must be handled strictly according to the pesticide label. It may contain residues that can harm people, wildlife, or water quality, so it shouldn’t be dumped anywhere without following label directions. The proper approach is to drain and dispose of rinse water per the label, which might mean collecting it for disposal at an approved facility or applying it only in ways the label allows (such as to labeled crops or soil at the specified rate). Avoid discharging to surface water, storm drains, or areas beyond what the label permits, and don’t reuse rinse water for future mixing unless the label explicitly allows it and testing confirms safety. Following these steps protects the environment and keeps you compliant.