Marine Fresh Water Tanks for Your Boat
Fisheries Supply is a trusted source for marine fresh water tanks and related onboard water equipment.
What to Know
- Marine water tanks support drinking, cooking, and cleaning onboard
- Tank material and style should match installation constraints
- Regular cleaning improves water quality and system longevity
- Tank size should reflect usage, crew size, and onboard equipment
Our inventory includes marine water tanks and drinking water treatments designed for recreational and commercial boats alike, with options suited to a wide range of installations.
Understanding Marine Water Tanks
Marine water tanks store fresh water for essential onboard uses such as drinking, cooking, and cleaning. They are a core component of a boat’s potable water system and must withstand constant motion and changing temperatures.
These tanks are available in several materials, including plastic marine water tanks, which are widely used for their durability and lightweight construction.
Types of Boat Water Tanks and Holding Tanks
- Rigid tanks
- Flexible boat water tanks
- Custom-built tanks
Each tank style offers distinct advantages depending on space, capacity, and installation requirements. Our representatives can help match the right option to your boat. The water tanks offered here are suitable for use as holding tanks when appropriate.
Maintaining Your Boat Fresh Water Tank
Regular maintenance of your fresh water tank helps ensure safe, good-tasting water and extends the life of the entire system. Routine care is especially important for boats that sit unused for extended periods.
- Regular cleaning and sanitization
- Use of water treatments such as chlorine tablets or UV purifiers
- Installation of water tank sensors and level gauges
Why Choose Fisheries Supply for Marine Water Tanks
- Wide selection of boat water tanks and accessories
- Established marine brands including Todd Water and Holding Tanks, KUS, and Tank Tender
- Knowledgeable, practical guidance from experienced staff
- Competitive pricing
Choosing the Right Size for Your Boat Water Tank
Selecting the correct tank size depends on how your boat is used and how much water you need on board between refills.
- Overall size of the boat
- Number of people onboard
- Coastal versus offshore use
- Presence of a watermaker
Proper sizing helps avoid running short on water while also preventing wasted space or unnecessary weight.
Frequently Asked Questions
How often should I clean my boat’s water tank?
Clean tanks annually or whenever water tastes or smells off; flush with fresh water and use appropriate cleaners.
Can I use my water tank for drinking water?
Yes, if the tank and fittings are food-grade and the system is regularly cleaned and sanitized.
Do I need a vent loop or check valve?
Yes. A vent or vented loop above the keel helps prevent siphoning and backflow. Check valves can also reduce the risk of contamination or siphoning between tanks.
What materials are commonly used for marine water tanks?
Marine water tanks are primarily constructed from high-density polyethylene (HDPE) due to its non-corrosive, leak-proof, and odor-free properties. For specialized applications, you can also find tanks and access plates made from aluminum and stainless steel, as well as flexible nylon fabric tanks with specialized linings.
How do flexible water tanks differ from rigid polyethylene tanks?
Flexible water tanks, such as those from Nauta, are designed to fit into irregularly shaped spaces where rigid tanks cannot. They are typically made from heavy-duty nylon fabric and do not require venting because they collapse as water is used, which also helps minimize sloshing noise and improves weight distribution.
What is the purpose of an accumulator tank in a marine plumbing system?
An accumulator tank, like those offered by Jabsco and Groco, acts as a pressure buffer in your boat's freshwater system. It holds a reservoir of air and water down-line from the pump, reducing pump cycling, smoothing water flow, and absorbing pressure spikes to extend the life of your plumbing components.
Can I monitor the water levels in my tanks remotely?
Yes, there are several monitoring systems available, including Tank Tender pneumatic gauges and electronic sensors from brands like SCAD Technologies and Blue Sea Systems. These systems allow you to check levels for multiple tanks (freshwater, grey water, or black water) from a single centralized panel.
Are there ways to improve the taste of water stored in marine tanks?
To maintain water quality and remove odors, you can utilize specialized drinking water treatments and taste/odor conditioners. Additionally, choosing tanks with FDA-compliant linings, such as Tedlar or polyethylene, ensures the water remains taste-free and safe for consumption.