Intro to Tiny House Plumbing

Tiny House Plumbing 101

Choose the right tiny house plumbing and water system option for you.

The rising popularity of tiny homes is astounding, even for us tiny lovers. One big reason might be that more than half of tiny homeowners report more savings compared to the average American. Money saved can add up to major quality of life upgrades.

Of course, living in a tiny house has its challenges too. For starters, figuring out how to create and maintain suitable plumbing system.

In our friendly guide, we’ll tell you all you need to know about tiny home plumbing, including both grid-connected and off-grid plumbing systems.

Read on to learn more about the various tiny house plumbing options.

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Grid-Connected Tiny Home Plumbing 

Many tiny home builders opt to be grid-connected, especially as permitted accessory dwelling units (ADUs), on single city lots, or in some community settings. If that’s what you’re looking for, then you can follow standard plumbing methods. That includes using full water pressure connection to the municipal sources.

The wastewater disposal, in this case, is via a city sewer system. Also, depending on your locale, it could be a septic system.

In grid-connected plumbing, you can make use of permanent connections that are plumbed directly into the grid system. Take note this is mostly done when a tiny house is foundation-built.

Though, in cities with zoning for movable tiny houses as ADUs, they require city sewer hook-ups.

Off-Grid Tiny House Plumbing Options

In case you prefer a tiny house on wheels (THOW, aka movable tiny house), then your best option is to design the plumbing system like an RV.

To future-proof your THOW, you can build in the ability to switch to a flush toilet for easy city sewer connection.

An off-grid water system provides the most flexibility. The system includes four components which we discuss in detail below:

  1. Tiny Home Water Tanks

All tiny homes with an off-grid tiny house water system require water tanks. Generally, three tank varieties are needed:

Freshwater Tanks

These storage tanks are for holding the water you’ll be drinking and using for cleaning, like dishes and bathing. On average, Americans use 80 to 100 gallons of water per person every day. If you live in a tiny home, you’ll need to reduce that number to between 5 and 15 gallons.

Low flow showerhead and faucets will significantly help with water usage management.

Further, it’s time to change wasteful habits, like running the faucet during your entire toothbrushing routine. Additionally, nixing a flush toilet makes meeting this goal a piece of cake (more on this later).

The smartest option is to find an RV water storage tank with a capacity of about 60 gallons of water. Such a container will give you about a week’s supply of water if you’re alone. For more than one person, the tank will keep you supplied with water for several days.

Though we’ve made our 20-gallon fresh-water tank last a handful of days, this did involve no showers or maybe one military-style shower each.

Ultimately, we wished we had gone with a larger option.

Don’t forget to purchase a dedicated freshwater hose for filling the tank. You don’t want to contaminate it by using an unclean or non-potable hose.

Greywater Tanks 

You’ll need two tanks to hold wastewater, depending on your toilet choice. One of those will hold greywater.

Greywater refers to wastewater that is without human waste, such as shower water, dishwater, and so on.

When shopping for a tank to hold greywater, you can choose either a standard freshwater tank or a black wastewater tank. That’s because there aren’t any pathogens in greywater, so any type of tank will do.

It can be mounted under your tiny home; school bus conversions always do this. Portable tanks are also available; these can often be stored under your tiny house, while parked.

It can be okay to let greywater back into the environment as long as you use bio-degradable products when bathing or cleaning. Though, please read up about best practices, as well as benefits of reuse.

Consider a simple grey-water system for your tiny home. Further, greywater permits are available in several cities and some states.

Another disposal option is running greywater into an RV sewer, often available in RV parks/tiny house communities. You can also use dump stations, or get it pumped out like RV blackwater tanks.

Blackwater Tanks 

A blackwater tank holds sewage. The container is typically opaque and features a high-density material to avert any leaks or damage. It’s only needed if you chose an RV flush toilet.

The tank doesn’t have to be as big as the fresh-water tank since only a small amount of the water you use throughout the day will be going down your toilet.

Water Pumps

Now that you’ve made sure you have sufficient water storage, it’s time to think of the suitable water pumps for your pint-sized house.

For tiny homes on wheels, you’ll need a water pump if you intend to have traditional showers/faucets.

The water pump will connect to your power and water system and move water throughout the house. A pump works perfectly with off-grid connections, allowing you to enjoy a comfortable lifestyle, and can easily be turned off if connected to pressurized water.

The best water pumps for tiny homes produce minimal noise, such as the ones designed for RVs and boats.

Tiny Home Hot Water Heaters

A soothing hot shower is just what you need after a grueling day. When it comes to water heaters for tiny houses, you can decide between a traditional water heater and a tankless one.

A traditional water heater heats the tank holding the water and maintains the water at a specific temperature indefinitely. These water heaters are quite popular for conventional homes.

However, they’re unsuitable for most tiny houses on wheels because they take up lots of space.

A tankless water heater heats water instantly on-demand. It takes up little space and runs on either electric power or propane.

For a tiny house dweller who wants hot water jetting, a tankless water heater will always be one of the best tiny house plumbing options.

The best off-grid option is a portable tankless water heater, and ventless options can be installed indoors, minimizing freezing concerns and winterizing needs.

Tiny Home Toilets

As you think about your tiny house sewer system, don’t forget to give serious consideration to the type of toilet you choose for your home.

Generally, there are six common varieties from which you can choose:

  • Conventional Flush Toilets (for on-grid, long-term parking situations only)
  • Composting Toilets
  • Cassette Toilets
  • Gravity Flush Toilets
  • Macerating Toilets
  • Incinerating Toilets

Each of these varieties has its benefits. Composting toilets, for instance, can break-down waste easily, without need for chemicals or water, and are easy to maintain.

A gravity or macerating toilet, on the other hand, works much like the conventional flush toilet, but require a black holding tank.

Incinerating toilets completely burn solid waste, so you never have to deal with it though can admit occasional pungent odors outside your tiny home, not ideal for close neighbors.

Get Your Tiny House Plumbing Right

For many Americans, the versatility and convenience of tiny home living are an irresistible allure. Once you’ve decided to make the transition to living in a tiny house, it’s essential to research your plumbing solutions ahead of time so you can make the adventure a blissful one with a reliable water system.

Would you like to more advice for building or transitioning into a tiny home?

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6 Responses to Intro to Tiny House Plumbing

  1. KissAnime February 29, 2020 at 11:43 pm #

    THOW will always have problems finding a legal place to park and will most always have monthly rental expense. If one needs to be mobile, much more easy to just remodel an rv.; As times go by, more and more local governments will look more favorable on smaller and smaller minimum sq footage homes on foundation. Investing in real estate is more expensive, but also a more secure investment with potential for increased value. Bottom line….if one wants mobility, go with an RV. if one wants a permanent tiny house, invest in real estate first.

  2. khuyến mãi casino trực tuyến March 31, 2020 at 7:15 am #

    Incinerating toilets completely burn solid waste, so you never have to deal with it though can admit occasional pungent odors outside your tiny home, not ideal for close neighbors.

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  4. khuyến mãi casino trực tuyến July 3, 2020 at 9:29 am #

    As you think about your tiny house sewer system, don’t forget to give serious consideration to the type of toilet you choose for your home.

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  6. khuyến mãi casino August 1, 2020 at 5:19 am #

    Now that you’ve made sure you have sufficient water storage, it’s time to think of the suitable water pumps for your pint-sized house

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