---
title: "Common Pool Water Problems and How to Fix Them"
date: 2023-03-23
author: "Dan"
featured_image: "https://www.testyourownpool.com/wp-content/uploads/2023/03/pool-water-problems-hero.png"
---

# Common Pool Water Problems and How to Fix Them

A clean and healthy pool creates a safe and enjoyable swimming environment for yourself, your family, and your friends.

However, even the most careful and meticulous pool owners can encounter problems with their pool water.

If you start to see water discoloration, cloudiness, or if something just seems “off” from the norm, it is important to diagnose the issue and take steps to correct it as soon as possible.

## Algae Outbreaks and Prevention

Pool algae outbreaks are an all-too-common problem that can be frustrating for a lot of pool owners. Algae makes the pool look unsightly and unsafe to swim in, and it can even damage the pool equipment.

Depending on the type of algae, there are steps to not only eradicate it from the pool but prevent outbreaks in the first place.

![example of green algae](https://www.testyourownpool.com/wp-content/uploads/2025/05/green-algae-example.webp)



### Green Algae

Green algae is the most common algae in pools. It’s also the easiest to remove.











[](https://www.testyourownpool.com/maintenance/green-algae)

![example of mustard algae](https://www.testyourownpool.com/wp-content/uploads/2025/05/mustard-algae-example.webp)



### Mustard Algae

Mustard or yellow algae is more stubborn and considered chlorine resistant.











[](https://www.testyourownpool.com/maintenance/mustard-algae)

![example of black algae](https://www.testyourownpool.com/wp-content/uploads/2025/05/black-algae-example.webp)



### Black Algae

Black algae grows “roots” into the pool surface and creates a protective barrier around it.











[](https://www.testyourownpool.com/maintenance/black-algae)





## Cloudy Water and Fast Fixes

If you start to see cloudy water, the first step should be determining what is causing it. A lot of times, it can be due to poor circulation or falling debris that hasn’t had a chance to get filtered out.

Other times, however, it can be a start of an algae outbreak or other contaminants in the water.

![Pool water is cloudy](https://www.testyourownpool.com/wp-content/uploads/2024/04/cloudy-water-1024x501.jpg)





### Clearing a Cloudy Pool

While most instances of cloudy water can be solved quickly, they can be a sign of a larger problem.











[](https://www.testyourownpool.com/maintenance/cloudy-water)

## Rainstorm Management

Most issues that come from rainstorms are fairly easy to fix. Temporary changes in water balance can cause cloudy water. Extra dirt and debris in the pool may require some extra vacuuming.

If there aren’t any larger issues, your pool should be back to its clean and balanced self in no time!

![swimming pool during a rainstorm](https://www.testyourownpool.com/wp-content/uploads/2022/09/pool-maintenance-after-rainstorm-1024x501.jpg)





### Maintaining Your Pool After a Rainstorm

Rainwater isn’t a issue. Not taking care of it in a timely manner, however, can cause problems.











[](https://www.testyourownpool.com/maintenance-tips/cloudy-pool-after-rain)

![pool overflowing](https://www.testyourownpool.com/wp-content/uploads/2024/09/overflowing-pool-1024x501.jpg)





### How to Handle an Overflowing Pool

When it rains so much that your pool starts to overflow, some issues might extend beyond unbalanced water.











[](https://www.testyourownpool.com/maintenance-tips/overflowing-pool)





## Stains on the Surface

Pool stains can show up even in well-maintained pools. If ignored, they often get worse over time. The good news is that most stains can be removed once you know what you’re dealing with.

With the right approach and a bit of patience, you can get rid of existing stains and take simple steps to prevent new ones from forming.

![iron pool stains on steps](https://www.testyourownpool.com/wp-content/uploads/2023/03/Iron-stain.jpg)





### Identifying & Removing Stains

Most stains are usually caused by organic contaminants and debris or by metals in the water.











[](https://www.testyourownpool.com/maintenance/pool-stains)

## Metals in the Water

Metals like copper and iron can get into your pool water without you even realizing it. They’re often found in well water, city tap water, or can leach from corroding pool equipment, especially older heaters and pipes.

Left untreated, these metals can cause unsightly stains on your pool surfaces and even tint the water.

![copper in pool water](https://www.testyourownpool.com/wp-content/uploads/2025/05/copper-pool-water.webp)





### Copper in Water

Don’t listen to viral trends. Copper is not something that you want in your pool water.











[](https://www.testyourownpool.com/maintenance/copper-water)

![iron in pool water](https://www.testyourownpool.com/wp-content/uploads/2025/05/iron-pool-water.webp)





### Iron in Water

While not inherently dangerous to , iron can turn your water rusty or green, and interfere with chemical balance.











[](https://www.testyourownpool.com/maintenance/iron-water)





## Prevention is the Best Cure

A properly balanced pool will solve *most* water issues before they become larger problems.

Know your chemistry, and know what you are putting into your pool. Whether it’s chemicals or adding more water, you don’t know what’s in them if you don’t look!