My water supply is brown and rusty

Why Is My Tap Water Brown or Rusty?

No one wants to turn on the tap and see brown, discoloured water flowing out. It’s not just unpleasant to look at—it can be a real cause for concern. Clean, clear water is essential for everyday tasks like drinking, cooking, showering, and washing, so when something seems off, it’s best to stop using the water and call a plumber immediately.

What Causes Brown or Rusty Water?

The most common reason for discoloured water is sediment in the pipes, typically rust (iron oxide) or manganese. Over time, older metal pipes—especially iron ones—can corrode. That corrosion builds up inside the pipe, and when disturbed (often by a change in water pressure), it mixes with the water flowing through your tap and turns it brown.

This kind of disturbance might happen after nearby plumbing work, fire hydrant use, or routine maintenance on the water supply system. It can also occur within your own home if your pipes or hot water unit are degrading.

Could My Hot Water System Be the Issue?

Yes—brown water is often linked to issues in your hot water heater. Inside the tank, there's a protective lining that separates the metal exterior from the water. If this lining becomes damaged or deteriorates with age, rust can form inside the tank and end up in your hot water.

If the brown water is only coming from your hot taps, your water heater could be the culprit. This may also be a sign that your hot water unit is reaching the end of its lifespan.

How Can I Tell Where the Problem Is Coming From?

If you're unsure whether the issue is isolated to your home or part of a wider water supply problem, here's a simple test: check with your neighbours. If their water is running clear, the issue is likely coming from within your own plumbing system. If they’re also experiencing discoloured water, it may be a supply-side problem.

Is Rusty or Brown Water Harmful?

In most cases, brown or rusty water isn't dangerous to your health—but it’s definitely not recommended for consumption or household use. It may taste metallic or unpleasant, and it can be harsh on your skin, dry out your hair, and stain your clothes or dishes.

In particular, people with dyed or chemically treated hair may notice unwanted changes in colour or texture after bathing in rusty water.

What Should You Do If You See Brown Water?

Don’t use it. Stop using the water and get in touch with an experienced plumber right away. A professional plumber will be able to:

• Pinpoint whether the issue is coming from corroded pipes, your water heater, or another source

• Provide expert advice on whether pipes need repairing or replacing

• Repair or replace a failing hot water unit

• Help restore clean, clear water to your home quickly and safely

Let MDG Plumbing Services Help

If you’ve noticed brown, rusty or discoloured water coming from your taps, don’t wait. Call MDG Plumbing Services on 0435 636 278. We’ll guide you through what to do over the phone and arrive at your property promptly to diagnose and fix the issue.

Clean water is essential—let’s make sure yours is safe, fresh, and crystal clear.