How Often Should I Drain My Hot Tub

Although draining and refilling your hot tub takes a lot of time, it needs to be done regularly to ensure that the water is clean and suitable for usage. As a matter of fact, you should drain or empty your spa or hot tub to get rid of any bacteria or other undesired organisms that may have developed resistance to the chemicals in the spa every 2-4 months.

In some cases, draining is preferable to extensive shock treatment because the latter can damage spa seals and finishes over time. But, when emptying a hot tub, there are a few things to take into account, such as regional water limits, spa water chemistry, and in some places, water discharge laws.

When To Drain A Hot Tub Or Spa?

Commercial or public spas that receive a lot of traffic would need to drain every few days to maintain the water’s health. Your spa water, however, will last longer, up to 4 months between changes.

Some spa owners will empty the spa if the water is consistently hazy, if there was a busy weekend with lots of visitors, or if they accidentally let the spa go for a while without cleaning or filtration. At some point, you might want to drain your spa for any of these reasons; but otherwise, just do it every three to four months to be on the safe side.

Issues With Old Hot Tub Water

Swimmers and your hot tub might both suffer a variety of problems from old water. Numerous foreign contaminants are introduced into the water by the swimmers who use your hot tubs each year. Swimmers themselves can introduce lotions, oils, and even skin contaminants into your water, and bathing suits can introduce detergents and other cleaning agents that are not wanted.

These swimmers sweat and spit into the water as they have fun or workout in it. It may surprise you to learn that some swimmers who didn’t wash before entering your pool can even leave fecal residues behind. Yes, some swimmers have been known to bring excrement into a pool. Gross, right?

In addition to the contaminants that swimmers bring in, the surroundings around the pool or hot tub can also introduce contaminants. Animal feces, pollen, dust, trash, landscaping chemicals, and even actual animals themselves can get into your pool. These are just a few of the exotic organisms that could get into your hot tub and contaminate the water.

Finally, all of the chemicals in our swimming pools, including chlorine, sodium bicarbonate, and other chemicals, will entirely dissolve in the water and leave a trace of residue inside your hot tub. 

What Are Total Dissolved Solids?

Total dissolved solids is a common term used in the swimming pool business to describe all the detritus we have just discussed. Total dissolved solids are rather easy to comprehend. This is the amount of the aforementioned materials that enter your hot tub or pool, disintegrate in the water, and shrink to a size that is invisible to the unaided sight.

The major issue is that TDS (total dissolved solids) are invisible. Algae is at least apparent, and stains can be seen and removed, but TDS is your pool’s invisible enemy. The fact that TDS is substantial is another issue. The TDS is not lost with the water when it evaporates out of the pool. Instead, the freshwater evaporates, causing your pool’s TDS to steadily increase.

Are Total Dissolved Solids Bad For Your Hot Tub?

TDS certainly has the potential to ruin your hot tub or pool. TDS can start to cause galvanic corrosion problems inside your pool as it accumulates, which will cause the metal components in your water to get discolored. TDS levels might even start to make your water appear lifeless, cloudy, and drab if they are high enough. In the end, removing TDS from water is an essential step in maintaining clean and clear water in your hot tub.

How Can I Clean Total Dissolved Solids In My Hot Tub?

Actually, draining the water is the only practical technique to remove all dissolved solids from your hot tub or pool. Sadly, there isn’t a chemical that can lower your TDS levels because introducing more chemicals would actually increase them.

Although it’s not ideal, the only method to guarantee you have the best odds of having a clean and clear hot tub is to use fresh water. Now that we are aware of what TDS is and how it is eliminated, it is time to discuss how frequently your hot tub should be drained.

How Often Should I Drain My Hot Tub?

The process of draining a hot tub is fairly similar to that of a pool. Simply take a TDS reading after filling the hot tub for the first time. The hot tub TDS will then be regularly checked until it reaches 1,500 ppm over your starting measurements. Since hot tubs are typically smaller, have more people in them at once, and have hotter water than a pool, the rise in TDS there will typically occur much more quickly than it would in a pool.

Where Should I Drain My Hot Tub Water?

Where you are authorized to drain the treated pool or hot tub water depends on your local code and the EPA’s recommendations. Some places demand that hot tubs drain into the sewer. Others permit you to use the water for home chores or to water your grass.

You will need to confirm the laws and regulations in your area because some municipalities and localities forbid the use of so-called “grey water” for things like washing cars or watering lawns. However, the best and safest option is to use a sump pump to direct the treated water into your pump room’s waste hole.

Best Hot Tub Drainage Guidelines

Recycling and reusing your hot tub water is a smart idea at all times. Water is an extremely valuable resource that we should all be preserving more of for future generations. It shouldn’t come as a surprise that many people want to know if they can utilize the water from their hot tub to irrigate their garden or clean their car because finding ways to maximize its use is important.

Although some cities and municipalities compel hot tub owners to dump their hot tubs’ contents directly into the sewer system, many permit homeowners to use the drained water for a variety of purposes around their residence. However, keep in mind that you should never empty your hot tub directly into a storm drain as this form of drain may flow into a natural body of water, which your used water could damage.

Your old hot tub water can be recycled and reused in a variety of ways. Among the best choices are:

  • Watering the lawn, bushes, and trees: As long as the chemical content of the spa water is low, you can use it to water your lawn, bushes, and trees. The grass will turn yellow and the plants may suffer if the water contains an excessive amount of bromine or chlorine. However, if the water is appropriately balanced with a pH level below 7.8 (and preferably between 7.0 and 7.2), it can keep your lawn thriving even during dry spells. Make sure not to oversaturate a single lawn area if you decide to do this. Simply by using test strips, you can determine the PH of the water.
  • Watering the foundation of your home: If you reside in an arid environment, your home’s foundations may crack if the ground becomes overly dry. The same is true for freshly poured concrete driveways and pathways, as they could move when the ground beneath them shrinks and dries up. The ground around concrete surfaces can benefit from being soaked with hot tub wastewater. In order to sustain steel and concrete structures, it will absorb into the ground and cause it to expand.
  • Add it to a pool: If you have a pool, you might be able to add your used hot tub water to it. Draining your hot tub into the pool can be resourceful while reducing your sewer expenditures since most in-ground pools only need to be drained every 5 to 7 years. Compared to hot tub spas, pool chemicals and filters are much stronger and more aggressive. The pool’s water quality would hardly be impacted by adding the much less volume of your hot tub content.
  • Pet bathing: Many dogs can become overheated in the summer. You could use the hot tub water to keep them cool during bath time, or you could even fill out an inflated pool for them to play in.
  • Hot tub water can be used for washing: You can wash cars, yachts, and any other vehicles without causing any issues to them.

The Best Way To Drain A Hot Tub

Different hot tub types use various draining techniques. However, most people rely on a few tried-and-true techniques:

  • Using an attached hose  Some hot tubs come with a hose that can be used to drain the water from the bottom of the tub. Don’t forget to turn off the tub first; you don’t want the pumps running while the water is being drained.
  • Using submersible pumps – Another option for swiftly and conveniently draining the hot tub is to use a submersible pump.
  • Using a garden hose – Some hot tubs don’t have a drainage hose attached, these tubs can be drained by connecting a standard garden hose.

How Can Make I Sure That the Chemical Levels Are Appropriate To Reuse?

In order to maintain the water in your hot tub clean and safe to use, you most likely employed chemicals. But you shouldn’t irrigate your lawn with water that has a lot of chlorine or bromine in it. Therefore, you should refrain from adding any chlorine to your tub for a few days prior to when you intend to drain the water.

As long as the hot tub’s lid is off, the chlorine will quickly dissipate. Check the water’s chlorine content to make sure it is at zero before draining it. Run the tub’s jets for a few hours with the lid open if the level is still high. The chlorine will quickly dissipate, as you’ll discover. A water-balancing product that only contains natural components is a good alternative and will eliminate the need to wait for the hazardous chlorine to leave the water before draining it onto your lawn.

Is There Anything You Can Do To Increase The Time Between Hot Tub Drainages?

Every hot tub owner will eventually need to drain their tub, there is no way around that, but there are a few things you can do to extend the water’s life so it can last longer between drainages.

  • Before using your hot tub, take a shower.
  • Apply a shock therapy following each use.
  • When filling the tub, use pre-filter for hot tub water.
  • Use a spa clarifier or spa enzymes.
  • Filter your water for longer periods each day.

You’ll be able to avoid draining and cleaning your hot tub for a longer period of time if you adhere to this professional advice. Nevertheless, you won’t be able to put off this duty indefinitely, so be ready and plan accordingly to know where you’ll empty your hot tub’s water when the time comes.