Cloudy Hot Tub Water: Reasons and Remedies

Having cloudy hot tub water can be frustrating, particularly because it can result from many different factors. More troubling is that after speaking with your hot tub company, looking up solutions online, and watching countless UA-cam videos, every source offers a different answer to the problem.
This deep dive into the causes and cures of cloudy hot tub water and how you can prevent it in the future will alleviate some of your confusion.
CAUSES OF CLOUDY SPA WATER
A number of factors can contribute to cloudy hot tub water. The following are the most common causes that can make your hot tub cloudy and foamy:
Filling the hot tub with cloudy water
High pH and alkalinity of the fill water
Dirty filters or insufficient filtration
Oxidizing minerals in the water
Poor hot tub sanitation
Hot tub contamination
The removal of accumulated buildup in the plumbing
Bathing suit dyes and foreign matter
Particulate in the water
To help you better understand how each of these contributes to cloudy spa water, read on for a more detailed explanation.