Can You Use Rainwater To Fill A Hot Tub?


Yes, you can use rainwater to fill a hot tub because it helps you save on water costs especially during the rainy season.

However, if you’re draining the water from rain barrels, make sure to drain a little higher from the bottom of the barrel. Rainwater contains dust and other debris. You don’t want all the dirt getting into your spa because it could make the water unsafe for use. 

As a general rule of thumb, you should fill your hot tub with rainwater via a filter. The filter traps all the dirt. You also need to check the alkalinity of the rainwater before filling the spa otherwise you could throw the pH levels off balance. 

The best way to fill your hot tub with rainwater is by filling it halfway with tap water and half of the amount using rainwater. That way, you’ll use less chemicals to enhance the quality of the water. 

Is it dangerous to be in a hot tub during a thunderstorm?

Water is a good conductor of electricity. If a thunderstorm strikes your hot tub, you could get electrocuted while inside.

Therefore, it’s dangerous to use your hot tub during a rainstorm. Don’t take any chances even though you can only hear the storms from far away-lightning travels quickly.

Bonus

Have you gotten your hot tub accessories this year?

Honestly, when I experienced a hot tub for the first time, it was good enough for me. It hasn’t gone a lot before I thought how cool it would be to have a drink in my hot tub, watch a game or bring my food with me. I had no idea people already made things for your hot tub so you can do just that. I have a long list of hot tub accessories that might be interesting to you. Click here to read the article.

Is it safe to be in an indoor hot tub during a thunderstorm?

If you thought using your indoor hot tub is safe during a thunderstorm, then you’re wrong. Lightning travels through electricity connections and plumbing works. A hot tub in use is always connected to the power source. It, therefore, implies that you can get injured if lightning strikes and travels through to your hot tub.

Is it safe to use a hot tub in the rain?

Yes, you can enjoy your hot tub in the rain. It’s fun to watch the raindrops fall near you and in the water. Since you don’t want to get all soaked and cold, you need to make some preparations for your spa sessions in the rain.

The first thing you need to get is an umbrella. The umbrella protects you from the cold rainwater. Besides, if you have your hot brewed drink, you can place it under the umbrella to protect it from the rain. You can also put some warm bathrobes and towels under the umbrella, or else they could become wet.

As a safety precaution, you need some shoes or slippers to wear to avoid slipping on the wet deck or patio. Slipping could give you serious injuries that you need to prevent. If you don’t have a deck, you could also slip in the mud.

Should I unplug my hot tub in a thunderstorm?

If you suspect an upcoming storm, you can protect your spa and probably give it more years of serving you. If a storm hits your spa, several things could happen; if you’re inside, it hurts you, or the electrical wires could get damaged.

A storm mainly strikes electrical connections and travels through water. Storm strikes could destroy electrical plumbing works or even lead to a surge in power. Electrical surges imply that more volts could get to your spa at a go, thus destroying it.

Therefore, if you think a storm might hit your area, it’s best to unplug your hot tub from the power source. It’s easy to unplug for the 110V hot tubs. If you have one directly connected to the main power source, you can trip the circuit breaker so that no power goes through to the hot tub plumbing works.

Can you get struck by lightning in a hot tub?

Yes, you can get struck by lightning while inside a hot tub. A hot tub doesn’t attract lightning, but the electricity connected to it can electrocute you if hit by lightning.

Should I keep a hot tub covered during thunderstorms?

Yes, you should have your hot tub covered during a thunderstorm. As a requirement, you should have your hot tub covered through all seasons when not using it. Covering a hot tub helps to maintain water temperatures so that you use less energy to heat it the next time you want to use it.

Besides, rainwater can be dirty, thus contaminating your hot tub water. You would either have to drain all the water from the hot tub and refill or use lots of sanitizers to make it safe.

Is it bad to get rainwater in a hot tub?

Rainwater isn’t bad, and if you love using your hot tub in the rain, then some rainwater obviously gets into the hot tub. The only problem with allowing rainwater to get into your hot tub is that it would require you to use more sanitizers to make the water safe. You would also need to use a vacuum to remove the debris from trees and dust that get into your water during a rain pour.

Bonus

Have You Considered Switching From
Chlorine To Bromine?

There’s been a trend where people are switching from chlorine to bromine. I feel there is not a lot of information about that transition and how to go about it since you can’t mix the two. I have addressed the most common misconceptions about this in the following article.

Are Lazy spas OK in the rain?

Yes, it’s perfectly fine to use a lazy spa in the rain. Lazy spas are no different from the typical hot tubs. The main difference is that lazy spas are deflatable. You can use your lazy spa in the rain because it’s waterproof and a small amount of rain getting inside cannot affect the pH levels.

However, if you suspect very heavy rainfall or even strong winds, we recommend that you place your lazy spa and pump indoors. 

Does rainwater raise or lower alkalinity?

Rainwater is slightly acidic so it will definitely affect the pH of your water. Rainwater increases the pH and lowers the alkalinity of the water in your spa.

You therefore need to use stabilizers to make sure the water is safe for users. Otherwise, you risk experiencing skin and eye irritations when you get into contact with the water.

Changes in pH also aggravate calcium buildup on the surfaces of your spa. Calcium accumulation makes the water appear cloudy, and it can also produce a bad odor. The calcium deposits appear as yellow flakes on the surface of your hot tub which isn’t appealing.

Editorial Staff

I'm Adnan Sabanovic, the guy behind Hot Tubs Report. I've had a chance to enjoy hot tubs last few years and have really become interested in owning one of them. Nearly every weekend you'll find me spending time with my family or playing sports. If I am not doing that then I'm here writing about tubs on Hot Tubs Report. This blog is a research for my first hot tub which I decided to document and share publically so others can benefit from it as well.

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