You may be alarmed or concerned if you turn on the tap and see discolored water flowing into your sink. Whether your water appears brown, yellow, or even green, it’s important to identify the cause and take the necessary steps to fix it. In this post, we’ll explore the common reasons for discolored water and how you can get clean, clear water back in your home.

Common Causes of Discolored Water

Rust and Sediment Buildup

Over time, pipes can accumulate rust and sediment, which may get stirred up due to:

Water Main Repairs or Maintenance — Work on your pipes can disrupt water flow, leading to temporary discoloration. 

Aging Pipes —  Old plumbing, especially when made of iron or steel, can accumulate rust and sediment. 

Increased Water Flow or Pressure Changes — Sudden changes in water pressure or flow can stir up deposits, causing them to flow through your taps. 

If you see rust or sediment discoloring your water, run cold water for a few minutes to flush out any sediment. If the problem persists, consider pipe replacement or installing a sediment filter. You may also need professional plumbing services to clean or replace your pipes.

Corroded Pipes

Old metal pipes, especially those made of iron or steel, can corrode, releasing rust into the water. This often results in brown, reddish, or yellowish water, which isn’t harmful but can look unappealing and stain fixtures.  

If your home has old plumbing, you may need to call a professional to replace corroded pipes. You may also consider installing a water softener to help reduce mineral buildup. Avoid using chemical drain cleaners as these can accelerate corrosion. 

Rubber materials such as gaskets or O-rings can also break down and release black particles into your water. Make sure these get replaced regularly to prevent water contamination. 

Municipal Water System Issues

Public water systems sometimes undergo maintenance or experience disruptions that can temporarily cause discolored water. Public water systems may also spring leaks, become contaminated, or have issues from aging infrastructure. 

If the issue doesn’t seem to originate in your home, check with your local water authority for any reported issues. If it’s a temporary issue, running your taps for a while can help clear the water.

High Levels of Minerals

Natural minerals like iron and manganese can give water an off-putting hue. Iron can cause water to appear yellow, orange, or reddish-brown. Manganese can cause water to be yellow or brown, and tannins, which are dissolved organic matter such as decaying leaves, can cause water to turn yellow or brown. 

If you are concerned about your water, you can purchase a water test to determine the mineral content in your water. You can also install a filtration system to help remove excess minerals.

Algae Growth (Green or Blue)

If your water appears green or blue, it could be due to algae growth in the water supply or issues with copper plumbing. Aglae can occur when there is a blockage in a filter or buildup in another part of your plumbing system. Copper pipes can leave a greenish coloration in water over time due to wear and tear. You will notice stains in your sinks and tub if there is copper in your system. 

If algae are the cause, flush your pipes or install a UV filter to help. If it’s related to copper corrosion, have your water tested and adjust pH levels accordingly. Large amounts of copper in your water can cause health problems, so make sure you take action as soon as possible 

Hot Water Heater Issues

If only your hot water is discolored, you may have an issue with your water heater. Sediment buildup inside the heater or a corroded anode rod can cause brown or yellow water.

Flush your water heater annually to remove rust and sediment buildup and replace the anode rod if it’s corroded. If the problem continues, you may need to call a professional to perform an inspection. 

When to Call a Professional

If discolored water persists despite flushing your system, or if you notice a metallic taste, strong odors, or sudden water pressure changes, you may want to call a plumber or your local water provider to diagnose and fix the issue. You don’t want to consume or use potentially harmful water. 

Don’t Panic When You See Discolored Water

Discolored water can have many causes, ranging from harmless sediment disturbances to serious plumbing issues. By identifying the issue and taking the right steps, you can ensure you and your family have safe, clean water to use and drink.