For solar-panel cleaning, plan the washwater route before work begins. A biodegradable label does not establish permission to discharge cleaning water into stormwater.
What to check
- Identify gutters, roof drainage and receiving drains with the site manager before starting.
- Use the product safety data sheet and agreed work method to plan runoff capture and disposal.
- Confirm the disposal route with the relevant authority or qualified contractor, including water carrying dirt or other residues.
- Keep chemical packaging and worn tools separate; cleaning panels does not mean the business is authorised to remove electrical equipment.
Source context
EPA requires prevention of waste and wastewater entering stormwater so far as reasonably practicable and lists detergents as pollutants. EPA Victoria: Stormwater.
Related resources
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Sources
- EPA Victoria — Stormwater. Stormwater and the law. Checked 18 September 2026.
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