As cities and towns grow across Australia, stormwater runoff has become an increasing threat to our water supplies. When rainwater flows over roads, roofs, and other surfaces, it picks up pollutants — from oils and heavy metals to chemicals and rubbish — that can contaminate rivers, reservoirs, and ultimately your tap water.

In this article, we explore what stormwater runoff is, how it affects water quality, the risks it poses, and how EvaPure filtration systems can help protect your home’s water.

What Is Stormwater Runoff?

Stormwater runoff occurs when rainwater doesn’t soak into the ground but instead flows over impervious surfaces like concrete, picking up contaminants along the way. This polluted water often drains directly into waterways used for drinking water sources.

Common Pollutants in Stormwater Runoff

  • Vehicle oils and grease

  • Heavy metals like lead, zinc, and copper

  • Fertilisers and pesticides from gardens and farms

  • Sediment and debris

  • Bacteria and viruses from animal waste

  • Microplastics and chemicals from urban areas

How Stormwater Runoff Affects Drinking Water

These pollutants can:

  • Reduce water quality and clarity

  • Harm aquatic ecosystems

  • Introduce harmful chemicals and pathogens into municipal water supplies

  • Increase treatment costs and complexity for water authorities

Despite rigorous treatment, some contaminants can still reach household taps, especially during heavy rain or flooding.

Why You Should Be Concerned

Contaminated stormwater poses health risks such as gastrointestinal illnesses, skin irritation, and long-term exposure to toxins. It also affects taste, odour, and appearance of tap water.

How EvaPure Protects Your Water

EvaPure’s advanced whole-home filtration systems help remove a wide range of pollutants carried by stormwater runoff, including sediment, heavy metals, chemicals, and bacteria.

Key features:

  • Australian WaterMark certified for quality and safety

  • High flow rates of 60L/min without pressure loss

  • Fixed pricing with installation and delivery included

  • 5-year warranty for peace of mind

What You Can Do

  • Support local initiatives to reduce stormwater pollution

  • Maintain your property to prevent runoff contamination

  • Install EvaPure filtration to ensure clean, safe water at home


Don’t let urban pollution compromise your family’s water. Choose EvaPure for effective filtration and peace of mind.