Understanding Runoff Rules for Responsible Pressure Cleaning

Pressure cleaning removes dirt, algae, oil and other residues from driveways, paving and building surfaces. However, that contamination does not disappear: it becomes part of the wash water. For property owners in Mawson Lakes, responsible cleaning means controlling this runoff so it does not enter street gutters, stormwater drains or local waterways.

Why Pressure Cleaning Runoff Matters in Mawson Lakes

Stormwater systems are separate from the sewer network. Water entering a roadside drain should not be assumed to receive sewage treatment before reaching downstream waterways. In Mawson Lakes, protecting lakes, wetlands and stormwater infrastructure makes careful wash-water management especially important.

Even cleaning with water alone can produce polluted runoff. Pressure washing can dislodge sediment, paint flakes, fertiliser residues and vehicle fluids. Adding detergent, bleach or degreaser introduces further substances that require appropriate containment and disposal.

Understanding South Australian Runoff Requirements

South Australia’s Environment Protection Act 1993 establishes a general environmental duty to take reasonable and practicable measures to prevent or minimise environmental harm. The Environment Protection (Water Quality) Policy 2015 also regulates water pollution, including the entry of pollutants into stormwater systems.

Do not direct contaminated pressure-cleaning water into gutters or stormwater drains. Before starting work, check current Environment Protection Authority South https://pressurecleaningmawsonlakes.com.au/tennis-court-cleaning/ Australia guidance and any relevant City of Salisbury requirements. Jobs involving public land, traffic management or particular waste streams may need additional arrangements.

How to Control Runoff Before Cleaning

1. Inspect the site: Identify drains, surface slopes, neighbouring properties and places where water could escape.
2. Remove dry contamination: Sweep or vacuum loose sediment, leaves and debris. Collect oil residues using an appropriate absorbent rather than washing them away.
3. Contain the cleaning area: Use suitable berms, temporary bunding or drain protection, supported by a recovery system. A drain cover alone does not manage accumulating water.
4. Recover the wastewater: Use a suitable wet vacuum or wash-water recovery unit and collect the liquid in appropriate containers.
5. Arrange disposal: Choose a lawful disposal method based on the contaminants present, obtaining approval where required.

Work in manageable sections and use the lowest effective pressure and water flow. Avoid cleaning during rain or when rainfall is likely to overwhelm containment.

Choosing a Suitable Disposal Method

Sewer Disposal Requires Permission

A sewer connection is not an automatic disposal option. Commercial cleaning wastewater may require SA Water trade waste approval and must meet applicable discharge conditions. Do not empty recovered water into a toilet, sink or sewer access point without confirming that the discharge is permitted.

Garden Disposal Is Not a Universal Solution

Do not assume that directing runoff onto a lawn makes it safe. Chemicals, salts, oils and metals can damage plants or contaminate soil. Any proposed land application must be lawful, suitable for the wastewater and prevented from flowing onto neighbouring land or into drains. Where suitability is uncertain, seek advice or arrange collection by an appropriately licensed waste contractor.

Questions to Ask a Mawson Lakes Pressure Cleaning Provider

Ask how the contractor identifies stormwater entry points, contains runoff and recovers wastewater. Request an explanation of the disposal method, particularly for oily driveways, commercial premises or painted surfaces.

“Biodegradable” detergent does not make runoff safe for stormwater. Responsible pressure cleaning combines effective surface treatment with a clear containment and disposal plan, helping protect both your property and Mawson Lakes’ local water environment.

Mawson Lakes Pressure Cleaning

Unit 7/12 William St, Cavan SA 5094

(08) 7282 0689