How to Fill Your Boat Fresh Water Tank

How to Fill Your Boat Fresh Water Tank

Freshwater is not an onboard luxury but a necessity. Drinking, cooking, bathing, and washing dishes require quality clean water in your portable water system. So, how to fill your boat fresh water tank isn’t rocket science.

 Filling a fresh water tank on a boat is pretty easy, but you need to take caution to keep your drinking water safe.

Depending on the fresh water tank you have, you can use an external water connection to fill your tank.

You can do this either by connecting your piping unit directly to the external water source or through a fill port on the side of the tank (a gravity fill).

 Some tanks have a customized freshwater connection or diversion valve that takes water from Cabela’s or campsites connections and directs it into the fresh water tank.

Just bear in mind that it’s essential to monitor your progress when filling your tank, so you know when it is full. 

How to Fill Your Boat Fresh Water Tank

Cleaning your boat’s fresh water tank is the first step. If you are not careful, cleaning your tank can be a messy and unpleasant experience.

Follow this guide for simple steps to take when cleaning out your freshwater supply.

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A couple of easy steps you can take before cleaning your boat’s freshwater tank will make the job much easier.

  • First, drain all of the water out of your freshwater tank. To do this, look for a spigot located on the fresh water tank at the bottom. Turn the spigot counter-clockwise and allow the water to drain out.
  • The next step is to locate your freshwater hose and remove any debris accumulated on the hose or near it. Once you have done this, turn the freshwater spigot back on to fill your tank with freshwater water. Turn the spigot counter-clockwise to open it, allowing fresh water access to your tank.

You are now ready to begin cleaning your freshwater tank. If you do not want to make a mess, wear rubber gloves and use some sort of mask to cover the bottom of your face.

  • You can now begin to scrub the inside of the freshwater tank with a medium-sized brush. If you plan on using any harsh chemicals to clean your tank, be sure that you are in a well-ventilated area.
  • If you are still wearing your gloves and mask, take them off now. Once you feel that your freshwater tank has been adequately cleaned, rinse it out with some warm water to ensure all the chemicals are washed away.
  • Once the water is turned off, reattach your fresh water hose to the spigot and drain your tank one last time. Close the freshwater spigot and make sure all of your tools are put away before refilling the tank with fresh water.

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Filling Fresh Water Tank Step by Step Instructions

Learn how to fill a boat fresh water tank in just three simple steps by following the advice set out below.

It really is quite easy to do, and you’ll be able to enjoy a day out on the water without having to worry about running low on fresh, clean water.

Step 1: Prepare the Boat

Before you begin filling your boat’s fresh water tank, it is important to make sure that your boat is ready for the water.

This means that you will have to remove all of the food, garbage, and clutter from your boat’s interior, as these items can contaminate the water.

Along with this, take the time to check your boat’s engine oil levels and fill up the fuel tank, as well as check that your engine is in good condition.

If there is any damage or leaks, these will need to be fixed before you can go out on the water.

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Step 2: Find Your Boat’s Fresh Water Fill Location

Now that your boat is prepared for a day on the water, it is time to find the fresh water fill location. This may seem quite obvious, but many boaters forget to check where they can access their boat’s fresh water tank.

On average, the main fresh water fill point will be located at the front of your boat, and in most cases, it is a gray (color) plug with a handle that you need to turn to release the liquid into your boat’s tank.

Step 3: Fill Your Fresh Water Tank

Once you have identified the fresh water fill point, it is time to begin filling your boat’s fresh water tank. Simply turn the plug and allow the liquid to drain into the tank until full.

Once this has been achieved, turn off the liquid supply and clean up any spills or mess that may have occurred during the process.

When you are finished, wipe down the excess water and check that no leaks have occurred before tightening the plug back into your boat’s fresh water supply point.

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Filtering the Incoming Water

If you are getting water from outside sources that you are not sure of its safety, take extra caution to ensure you are drawing in quality and clean water. Using water filters can guarantee you clean water.

 Filters provide a first, second, or even third defense line against water contamination, allowing you to eliminate all bacteria, viruses, and cysts from the water.

When purchasing a water filter, make sure that it meets all the Microbiological Purification Standard. 

 When filling the fresh water tank, run dockside water through a high-capacity inline filter to ensure clean water is brought aboard.

Since some dockside hoses lack a potable water approval rating, you can use a filter containing activated charcoal to help you neutralize the chlorine contained in external water supplies.

If you choose to leave filters on the dock, ensure they have opaque canisters since clear canisters are ideal places for algae. 

 You can install an onboard water filter immediately downstream of the boat’s water supply pump to serve the whole vessel. In this case, activated charcoal and a particulate filter are great options. 

 Alternatively, you can choose to filter only the water that you intend to drink, cook or wash utensils with, using an under-counter or point of use system.

These low-capacity filters often include a carbon component and depend on a compact filter and customized countertop spigot.

Frequently Asked Questions on Fresh Water in a Boat

Where Can I Fill My Boat’s Fresh Water Tank?

Local Campgrounds are one of the best places to get potable water to fill your fresh water tank. Nearly every campground provides drinkable freshwater included with your stay or for a small fee. Some camp trailers will stay a night or two to fill their tank and head to their dry camping destination with freshwater. Other campsites may have a customized dunghill station with access to portable water or may allow you to connect to water in an empty campground.  

 Other places to fill your freshwater tank include:
– Rest stops
– Travel centers
– Cabela’s

Why Does My Boat Fresh Water Pump Keep Running?

Usually, if your boat’s fresh water pump keeps running even when you are not frequently using it, it shows that you have a leak somewhere in the system. This may be due to a loose connection, a crack in one of your lines, or a faulty fresh water pump pressure switch.

Do You Have to Prime a Boat Water Pump When Refilling?

No, there is no need to prime a boat water pump. However, if you are refilling your boat’s freshwater tank with saltwater or vice versa, you should use a tube to suck out as much air as possible. This will remove any salt crystals that may obstruct the water flow.

Filling your fresh water tank on your boat is a relatively straightforward process that just requires a little bit of time and attention to detail.

By following these simple steps, you can ensure that your fresh water tank is clean and ready for use when you need it.

Have you ever filled up your fresh water tank? What tips would you add to this list? Let us know in the comments below.

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