---
title: "What Is Cloudy water? Pool Glossary | Marina Pool Services"
description: "Cloudy water is hazy water caused by tiny particles, poor filtration, or unbalanced chemistry."
url: https://marinapool.multisites.ai/glossary/cloudy-water
publisher: Marina Pool Services
phone: +1-817-896-1120
quote: https://marinapool.multisites.ai/contact
---

Water chemistry

# Cloudy water

Cloudy water is hazy water caused by tiny particles, poor filtration, or unbalanced chemistry.

Cloudy water is a warning sign, not just a looks problem. If you cannot see the main drain, the pool may not be safe to swim in.

Common causes are low [free chlorine](https://marinapool.multisites.ai/glossary/free-chlorine), high [pH](https://marinapool.multisites.ai/glossary/ph) or alkalinity, a dirty filter, or too few pump hours. Start with a water test. Then clean the filter, run the pump longer, and fix the chemistry. A [clarifier](https://marinapool.multisites.ai/glossary/clarifier) or [flocculant](https://marinapool.multisites.ai/glossary/flocculant) can help after that. If the water turns green, treat it as algae.

[Marina can helpPool Filter Service & Installation](https://marinapool.multisites.ai/our-services/pool-filter-repair)

## Related terms

-   [Clarifier](https://marinapool.multisites.ai/glossary/clarifier)
-   [Flocculant](https://marinapool.multisites.ai/glossary/flocculant)
-   [Pool filter](https://marinapool.multisites.ai/glossary/pool-filter)
-   [Green algae](https://marinapool.multisites.ai/glossary/green-algae)

## Need a hand with your pool?

Call or text and tell us what your pool needs. Estimates are free for qualifying services, and same-day estimates are possible when the schedule allows.

[Call (817) 896-1120](tel:+1-817-896-1120)[Get a quote](https://marinapool.multisites.ai/contact)

![A pool technician working on an equipment pad](https://marinapool.multisites.ai/_astro/technician-equipment-pad.BW5xZMNY_Zum1K5.webp)