Bypassing The Freshwater Tank: Is It Possible For Campers?

If you're considering bypassing your fresh water tank, it's probably because you're looking to convert your RV into a full-time stationary home. While it is possible to bypass your fresh water tank, it's important to note that doing so may lower the resale value of your RV. Additionally, bypassing the tank can damage the valves, seals, and pumps on your RV's holding tank system.

If you decide to proceed with bypassing your fresh water tank, there are a few methods you can use. One option is to remove the vent pipe, as this will prevent the contents of the tank from being released into your pipes. You can also try using seawater or toilet paper to get rid of any unpleasant odors or appearances. Another option is to use empty bottles with caps, fill them up, and dump them directly into the tank. Keep in mind that these methods are not intended for everyday use and should only be used as a last resort.

The benefits of bypassing your fresh water tank

Bypassing your fresh water tank in your camper or RV can have several advantages, especially if you are considering converting it into a permanent stationary home. Here are some benefits of bypassing your fresh water tank:

Convenience

One of the main benefits of bypassing the fresh water tank is convenience. With a bypass system, you no longer need to worry about dumping and flushing tanks, which can be time-consuming and inconvenient, especially when travelling.

Resale Value

If you decide to convert your RV into a stationary home, bypassing the holding tanks can lower the resale value. However, if you are planning to make it a permanent home, this may not be a concern, and you can benefit from the increased convenience and comfort.

Plumbing Options

When bypassing the fresh water tank, you have the option to replace the RV's plumbing with 3-inch PVC piping. This can provide more flexibility and durability in your plumbing system.

Stationary Home Benefits

If you are considering making your RV a permanent home, bypassing the fresh water tank can be a step towards that goal. You can explore options such as park models or single-wide trailers, which offer more livability in terms of space, appliances, and water heating systems.

Sewer Gas Smell

By bypassing the fresh water tank and installing a residential toilet, you can eliminate the issue of sewer gas smells coming from the toilet flap valve, which is common in RV-style toilets.

Water Quality

Bypassing the fresh water tank can also provide an opportunity to improve your water quality. It is essential to sanitize your water tank regularly (every six months or sooner if there are issues) to ensure the water is safe for consumption and use, preventing bacteria growth and other problems.

Overall, bypassing your fresh water tank in your camper offers a range of benefits, particularly if you are considering a more permanent setup. It can enhance convenience, provide plumbing options, and improve your water quality, making your RV feel more like a home.

How to bypass your fresh water tank

Bypassing your fresh water tank in a camper is possible but it is not recommended for everyday use as it can damage the valves, seals and pumps on an RV holding tank system. Here are some ways to bypass your fresh water tank:

• Remove the vent pipe: The vent pipe on an RV is connected to the holding tank and will prevent any of the contents from being released into your pipes. If you remove this, then some water may flow out but most of it should stay in the tank.
• Use sea water or toilet paper: If you have access to seawater, pour it into the tank after sanitizing it to prevent contamination. The same can be done with a container of plain water and some toilet paper to get rid of any unpleasant odor or appearance.
• Use bottles: To avoid damaging valves, use empty bottles with caps. Fill them up and dump them directly into the tank to get rid of any odors or potential damage to your system.
• Take off the insulation: Underneath most RV holding tanks is a thin layer of insulation. Removing this will allow for better air circulation, which speeds up evaporation and causes the tank to empty faster.
• Locate the water heater bypass valve: The water heater is connected to your holding tank. If you can find a way to bypass this, the tank will empty much faster. You can use a water hose to connect the drain valve on your holding tank directly into your freshwater pipes.
• DIY bypass: If you’re good with tools, you can create an emergency bypass using PVC pipe, valves and tape, which will allow any contents to flow out without needing to remove insulation or take off vent or water heater valves.
• Use a U-shaped fitting: Install an additional U-shaped fitting on your RV holding tank system to lead waste away from any water or electrical connections and allow it to be released easily.
• Use baking soda: Pour about half a cup of baking soda into the top opening on your blackwater valve (not into the tank itself), then add some vinegar or drain cleaner. The two chemicals will react and help break down waste matter more efficiently!
• Use only water: This method is best for when you need to get rid of only urine, rather than feces/paper/water, etc. Fill up an extra water bottle or another container with fresh drinking water from your RV sink faucet, then slowly pour it into the top opening on the valve until there’s no more left inside that particular tank.
• Use RV antifreeze: Purchase standard antifreeze from your local auto parts store and mix with an equal amount of freshwater before pouring it into the blackwater valve’s top opening to avoid damaging anything inside.

The risks of bypassing your fresh water tank

Bypassing your fresh water tank in a camper can be risky and is generally not recommended. Here are some of the potential risks and issues to consider:

• Inconvenience and reduced functionality: Bypassing the fresh water tank means losing the ability to use water facilities when not connected to an external water source. This can be a significant inconvenience, especially when boondocking or camping in remote areas without hookups.
• Potential damage to the water system: The water system in an RV is designed to work with the fresh water tank. Bypassing it can put unnecessary strain on the system and may even cause damage to components such as pumps, pipes, and valves.
• Contamination and health risks: The fresh water tank plays a crucial role in ensuring clean and potable water. Bypassing it may introduce contaminants into the water system, leading to health issues for those using the water for drinking, cooking, or personal hygiene.
• Weight distribution and vehicle handling: Water is heavy, weighing over 8 lbs. per gallon. Filling the fresh water tank can help distribute weight more evenly in the camper and improve vehicle handling. Bypassing the tank and relying solely on external water sources can affect weight distribution and handling, especially when travelling with a partially or empty tank.
• Resale value: Modifying an RV by bypassing the fresh water tank can significantly lower its resale value. Potential buyers often look for unaltered vehicles, and bypassing the tank may reduce the pool of interested buyers.
• Maintenance and sanitization: Regular maintenance and sanitization of the fresh water tank are essential to prevent the growth of bacteria, algae, mould, and mildew. Bypassing the tank may make it more challenging to perform proper maintenance and could lead to water quality issues.
• Flexibility and independence: The fresh water tank provides flexibility and independence by allowing campers to access water even when not connected to external sources. Bypassing the tank reduces this flexibility and increases dependence on campsites or other sources of water.

While bypassing the fresh water tank may seem like a convenient option, it is important to carefully consider the potential risks and drawbacks. Proper maintenance and use of the fresh water tank system will help ensure a safer and more enjoyable camping experience.

When you should bypass your fresh water tank

There are several reasons why you may want to bypass your fresh water tank in a camper. Here are some scenarios where bypassing the fresh water tank can be useful:

• Convenience: Bypassing the fresh water tank eliminates the need for dumping and flushing, which can be time-consuming and inconvenient, especially when you're on the road or in a remote location.
• Full Tank: If your fresh water tank is full and there is no place to dump it, you may consider bypassing it temporarily. This can be helpful when you're at a campground or in an area without proper dumping facilities.
• Maintenance: In some cases, you may need to bypass the fresh water tank for maintenance or repair purposes. This could involve repairing leaks, cleaning the tank, or accessing other components connected to the water system.
• Water Source: If you have access to an external water source, such as a freshwater hose or a jug of potable water, bypassing the fresh water tank allows you to use that water directly without filling up the tank first. This can be useful when you're boondocking or dry camping and want to conserve water.
• Sanitization: When sanitizing your fresh water tank, you may need to bypass the tank temporarily to ensure that the sanitizing solution reaches all parts of the plumbing system. This helps in effectively cleaning and disinfecting the water lines.
• Winterization: In cold weather, you may need to bypass the fresh water tank to prevent freezing and potential damage to the system. This typically involves draining the tank and plumbing lines to avoid any standing water that could freeze and cause issues.

Remember that bypassing the fresh water tank in a camper should be done judiciously and only when necessary. Always refer to your camper's owner's manual and follow the manufacturer's guidelines for any maintenance, repair, or modification tasks. Improper bypassing of the fresh water tank can lead to damage to valves, seals, and pumps, as well as potential water contamination.

What to do if you can't bypass your fresh water tank

If you can't bypass your fresh water tank, you'll need to regularly sanitise your water tank to keep the water fresh and safe to use. You should do this at least every six months, or sooner if you suspect there's an issue with the water quality.

Here's what to do if you can't bypass your fresh water tank:

Step 1: Prepare the necessary supplies

Before you begin, gather the following supplies:

• One external water filter
• One internal water filter (you may have more than one)
• Bleach
• A funnel with a flexible hose and stopper
• A water filter wrench for your internal filter
• A container for mixing bleach and water
• Measuring cups
• Rags

Step 2: Sanitize your equipment

Start by sanitising your funnel and hose with bleach. Allow the bleach to sit for about 15 minutes.

Step 3: Drain your water tank

Next, drain about a quarter to half of your water tank. If the water is not safe to use, drain the entire tank and refill it with clean water to about the halfway or three-quarter mark. Never pour undiluted bleach directly into the tank.

Step 4: Prepare your bleach mixture

For a 40-gallon water tank, mix one cup of bleach with four gallons of fresh water. Do not use more bleach than necessary.

Step 5: Add the bleach mixture to your water tank

Using your funnel and hose, pour the bleach mixture into the fresh water fill.

Step 6: Fill the water tank

Add fresh water to the tank until it comes out of the overflow hose.

Step 7: Turn on the water pump

Turn on the water pump to start using water from the tank.

Step 8: Run the chlorinated water through all water lines

Run the chlorinated water through all water lines for about two minutes. It is normal to smell chlorinated water during this step.

Step 9: Refill the water tank

Turn on your fresh water supply and top off the tank with fresh water.

Step 10: Let the water sit

Let the water and bleach mixture sit in the tank for at least four to five hours to ensure the tank is sanitised. You can also leave it overnight.

Step 11: Drain and refill the water tank

After the sanitisation period, drain the water tank until it's empty and refill it with fresh water.

Step 12: Flush the water lines

Turn off the fresh water supply, turn on the pump, and flush the water lines until the smell of bleach is gone. If the bleach smell persists, drain the tank, refill it, and flush the system again.

Step 13: Replace your water filters

Turn off your water supply and replace your external and internal water filters with new ones.

Step 14: Refill your water heater

If you have a water heater, refill it with fresh water according to the manufacturer's instructions.

Additional tips for keeping your water fresh:

• Use a dedicated drinking water hose to fill your water tank, and only use this hose for filling your water tank.
• Use a water filtration system when filling your tank to remove harmful bacteria and other contaminants.
• Always winterise and de-winterise your camper correctly to prevent the growth of mould and bacteria.
• Sanitize your water system whenever you take your RV out of storage or notice a foul odour or bad taste in the water.

Frequently asked questions