Tiny House

Tiny House Plumbing

By taufiqhaque

Doesn’t the term “tiny house” conjure up images of a tent, an igloo, or a treehouse? However, it resembles a larger home building with all of the necessities. The plumbing system is one such necessity. Many people built the tiny house themselves to save money, while others get the service done by a professional. There is a lot to consider and cope with when it comes to DIYing one’s own home. Fortunately, plumbing is the easiest aspect of designing a tiny house that one needs to deal with, among others. However, the question remains how tiny house plumbing can be done properly when you are merely an expert?

This article will guide you through all of the thorough descriptions and information you’ll need before starting your tiny house plumbing project.

Provision for tiny house

Provision for tiny house

In the tiny house, potable water must be available for drinking, cleaning, and hygiene. There must also be particular arrangements for a kitchen with at least one sink and a restroom with at least one water closet, one waterproof bath, one lavatory, and a shower system.

How to DIY

As this plumbing system is not complicated, it may be completed without the assistance of a professional. However, there are some core guidelines and measures to follow before attempting it alone. The instructions and techniques to do your tiny house plumbing independently are outlined here.

Tiny House Plumbing: Plumbing diagram

The first step is to think out how you’ll do tiny house plumbing on your own by drawing a diagram. Remember to draw the diagram with separate hot and cold-water pipes in mind. In addition, the drain line should be separated. Determine where you want the hot and cold water to be supplied. The water entering the tiny house and the water exiting it should be connected to separate lines. Connect all the exiting water lines to the septic and RV sewer connections using a single drain line.

Tiny House Plumbing: Water hook-ups

Tiny houses that stay in one place can connect to water via an RV hookup, an underground water supply with a pedestal that feeds water into sinks, and other taps as needed. The water supply can be connected to your tiny house in two ways. If you plan on staying nomadic, one is for long-term connections, and the other is for short-term connections. One major issue with either method is that the pipelines will freeze as it travels from the water source in winter. Whatever method you choose, be sure it is well insulated.

Tiny House Plumbing: Water Inlet

When installing your plumbing, make sure you choose the right hose. This is because a regular hose does not prevent the release of dangerous chemicals into your drinking water. As a result, using an RV water inlet to bring water into your home will ensure that you have clean drinking water and stay disease-free. An RV water intel is simple to install and is compatible with most campgrounds, making it ideal for tiny house plumbing.

Tiny House Plumbing: Direct connection

Direct connection, a more permanent method for tiny house plumbing, is also an option. Indirect connections, keep in mind that the hose will be less prone to freezing and will appear cleaner. Also, choose the cheapest but most durable connection. 

Tiny House Plumbing: Water Tanks

If you cannot get a direct connection, a water tank may be an excellent alternative. However, when using water tanks, one must adapt their water usage. The reason for this is that the water tank you’ll be installing in your tiny house won’t be as huge as one attached to a larger home. The storage capacity is also limited. So, you must conserve water for daily activities such as cleaning, cooking, showering, and washing.

Tiny House Plumbing: Sink

You have two alternatives for tiny house plumbing for the sink. One is a volt sink pump connected to the water tank directly. The other is a foot sink pump connected to the water tank. Water pumps with a voltage of 12 volts are common. This water tank could be a good substitute if you can’t get a direct connection. When using water tanks, however, one must adjust their water usage. Due to the small water tanks, storage capacity is also limited. As a result, you must conserve water when cleaning, cooking, showering, and washing your clothes. This one is only good for cold water. Foot pumps, on the other hand, are a simple choice to attempt if you don’t want to deal with the inconvenience of installing a volt water pump. The installation of the foot pump sink is simple.

Tiny House Plumbing: How does it work

Knowing how the plumbing system works might help you address any problems you may encounter in the future. Keep reading to know how tiny house plumbing works. 

Bringing water

Regular tap fitting is done in tiny house plumbing connected to water tanks to collect water and bring it into the house. Nowadays, there are also water tanks that collect rainwater from the roof via downpipes. However, if it’s a tank that collects rainwater or the tank that stores water, either of them will bring the water into the house through to the regular tap fitting that is done into the house. 


The greywater that will be e past through a filter and a grease trap before going into a gravel pit outside onto the garden is usually the water from the showers, bathrooms, kitchen sink, and washing machines. Ensure to dispose of those grey waters into places far away from water bodies. 


The black water coming out of your residence is most likely water containing urine and feces. Make sure to properly dispose of any black water by following your local council’s instructions. 


Keep the sink and shower on the same side of the house to make venting for the plumbing system easier to plan. Also, the draining lines in your main plumbing system should be carefully built so that water disposal is not a concern. Avoiding shallow and steep slopes in this scenario will make it easier to drain the water down your sink.


To maintain a well-working plumbing system, it is important to check the overall tiny house plumbing. Also, clean your system regularly and check if there are any leaks or damages. Using biodegradable cleaning and beauty products will also be safe for your plumbing system and the environment.  

Tiny House Plumbing: Tips to follow

Provision for tiny house
24568565 – man’s hands with wrench turning off valves

If you are a beginner DIYing your tiny house plumbing, then here are some tips to get you started:

  1. Always plan your plumbing system before you begin implementing it. Not only will this save you a lot of money and time, but it will also make your stay less stressful.
  2. Plan your drains carefully so that they can take out the water of your house without causing any mismanagement. 
  3. If you have installed a water heater stove and shower fans, you have to plan exhaust venting.
  4. Plan the slope of the drain lines properly so that they are not too shallow or steep. Getting it right will save you a lot of money and stress. 
  5. Try to level all the draining lines of your home properly. Otherwise, the water drainage will not happen properly. 
  6. Shut off the plumbing system of the whole house when there is any leakage problem to fix or when you are staying far away from home. 
  7. Avoid reusing fittings or tubing as they may not last for a very long time or will bring complications to your tiny house plumbing system. 
  8. There are some kinds of water heaters that are tankless. Try to get one of those as it will be easy to get rid of the heater easily. Also, there will be no bulk of the tank’s weight that your house has to bear. 
  9. Try to maintain the weight of the water tanks that carry hot and cold water. You need to work into their weight calculation properly so that your plumbing system of the tiny house can run smoothly. 
  10. Frost prevention should also be a serious concern when DIYing your tiny house plumbing system. 
  11. Make sure you know the water lines of your tiny house well and always have access to them. If you do not have convenient access to your waterline, you may face problems fixing them at times of need. 

Tiny House Plumbing: Facts to know

Provision for tiny house

There are some facts to consider about tiny house plumbing to help an individual to understand the process better. 

It Isn’t hard

Many mistakes the tiny house plumbing to be quite different from the regular house plumbing. However, it is not as hard or different as one might think. Yes, the system may require association with fittings and processes that may appear difficult. But the truth is that it is as simple as you haven’t even thought of. In the case of a tiny house plumbing system, there are not many issues to deal with. In almost all tiny houses, there is commonly a sink, toilet, and shower included in the plumbing system.

Off grids Aren’t the best

For tiny houses, storage is one of the main concerns. So, the tiny house plumbing system should not include more than 3 tanks to store water separately. One tank should be for clean water and should be connected to water faucets to be brought into the house. The rest of the two tanks should be used for water disposal. The grey waters will be stored in one, while the black waters will be stored in the other.

Water not dumped

Tiny homeowners face the problem of dumping wastewaters mostly. Though greywater can be dumped onto the grounds, black water cannot be disposed of like that. Blackwater needs separate designed dump stations.

Alternative methods to dump

Two different toilets can be used to dispose of the black water of your tiny house plumbing system. One is a composting toilet which is very popular. In this one, the liquids are converted into grey water tanks, and the solids remain stored for extended periods. This needs to be cleaned every month, which is a gross process for many. So, the alternative incinerating toilet can help you out here. The toilet waste gets burned so that nothing is left other than some dust to clean off. However, these toilets use electricity or gas to do this burning process. 

Water heating process 

The water heating methods in a typical house and a tiny house are quite similar. When it comes to water heating, there are usually two choices. The first is an electric heater, and the second is a propane gas heater. 

Indoor plumbing

Indoor plumbing is quite inexpensive compared to regular plumbing for your tiny house. So do research and then install the tiny indoor plumbing to keep the costs in an affordable state. 

Most maintenance

The plumbing system in tiny houses is prone to additional problems in the winter. Because of the outside water connection, the pipes frequently froze, necessitating the usage of a heater to thaw them out.


Tiny house plumbing doesn’t cost a lot unless you hire a plumber who charges. If you can avoid having a plumber and do it on your own, you will be able to save a lot of money. 

Possible problems with solutions

For your tiny house plumbing, finding an available water source and hooking up to it will help you avoid many plumbing problems. It’s possible that finding hookups in new places will be difficult. In that situation, keeping water in portable water tanks will come in handy. Another problem you might face is including too many appliances in your tiny house plumbing like bigger houses. Just set up what is needed for you and avoid the rest of the appliances. Also, if you want to avoid the gross cleaning process, get a composting toilet for your home.


If you have read this far, you know everything you need to know about tiny house plumbing. When an individual owns a tiny house, it is almost clear that the person is on a tight budget financially. So, the plumbing system that needs to be done in that house should be inexpensive too. And to make this plumbing process inexpensive, it is best to DIY it. While doing your tiny house plumbing, keep in mind everything that has been stated in this article and experiment with them. Thus, you will be able to set up your plumbing system properly.

You can also read: The Cost Of Plumbing A Tiny House

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