300 Gallon Rectangular Truck Bed Water Tank

Name: 300 Gallon Rectangular Truck Bed Water Tank
Brand: Custom Roto Mold
SKU: 300RT
Price: 684.0 USD
Availability: InStock

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$855.00

$684.00

Buy 2+ tanks, save 5% with code: BULK

Email us for a Price + Shipping Quote: info@ewatertank.com

This 300-gallon tank fits perfectly in standard 6.5′ truck beds—FDA-approved, UV-stable, and built tough for farms, off-grid use, or emergency water hauling.

Fits in standard 6.5' or longer truck beds
Lowest Price Guarantee
5 Year Warranty
Made & Shipped from Idaho

Special Order Item: This item ships direct from the manufacturer and may require additional processing time. Usually ships within 3-6 weeks.

Outlet Placement

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300 Gallon Portable Tank for Truck Beds or Water Storage

This 300-gallon rectangular tank is a compact, durable option for mobile water storage—perfect for farms, job sites, off-grid living, or emergency use—but it's also suitable for food-grade liquids, agricultural chemicals, and other non-corrosive fluids. Crafted from FDA-approved, BPA-free polyethylene, it safely stores consumable or sensitive materials and withstands tough conditions without cracking or leaking. The short, wide footprint provides a stable ride in most truck beds and trailers, while the UV-stabilized resin helps it endure prolonged outdoor exposure. Whether you're hauling clean water to remote areas or transporting other compatible liquids, this tank offers a dependable, space-efficient solution.

Pro Tip: If you plan to transport liquid in this tank, we recommend the optional hold down bands! The hold down bands include 2 steel bands, 4 J-hook bolts with washers and nuts. They are not required for stationary use.

FDA-Approved for Drinking Water
Made with safe materials that meet FDA rules, so it’s okay to store clean, drinkable water.
Corrosion-Resistant HDPE
Made from tough plastic that won’t rust or fall apart over time.
Flat-Bottom Design
Sits flat and steady in truck beds, trailers, or on job sites.
Offset Fill Cap
Easy-to-reach top opening so you can fill it and check the water level quickly.

Seamless, Leak-Resistant Design
Built in one solid piece to help stop leaks and keep the tank strong.
UV-Stabilized for Outdoor Use
Can stay outside in the sun without cracking or fading.
Algae-Resistant Interior
The dark color helps block sunlight to keep algae from growing inside.
Heavy-Duty Construction
Strong enough for farms, work areas, or off-grid places.

300 Gallon Water Tank Specifications

Technical Drawing
5-Year Warranty
Complies with U.S. Food and Drug Administration regulation 21CFR 177.1520 (1) 3.1 and 3.2 for storage of potable water.
Capacity: 300 gallons
Material: High-Density Polyethylene (HDPE)
Lid: 8" threaded vented lid (center-mounted – see Image #3)
Outlet Fitting: 2" female NPT fitting (located on long or short side)
Color: Translucent white (easy to see water level)
Weight: 110 lbs
Length: 58"
Width: 48"
Height: 29"

Shipping & Delivery

Freight Shipping Class: LTL / 250
Shipping Weight: 160 lbs.
Length: 48"
Width: 58"
Height: 33"
Ships vertically on a 48x48 pallet and is shrink wrapped for protection
Ships from Caldwell, Idaho - free in-store pickup option available

Freight is calculated at checkout. Alternatively, you can reach out to us at info@ewatertank.com for a customized quote.

We also offer a free in-store pick up option from 307 Evans St, Caldwell, ID 83605. Pick up must be scheduled with us after order placement.

Prior to delivery, please ensure access to the tank site and make sure the location of the tank is level and clear of any obstructing materials.

For more information, see our shipping & delivery page or contact us with any questions.

Questions? We're Here to Help.

Our team is standing by Monday - Friday 10 am to 6 pm CST.