When equipping a truck for long hauls, RV trips, or concession operations, a large-capacity water tank can simplify sanitation, sanitation water storage, and on-the-road reliability. The following selections focus on large, durable tanks designed for fresh or gray water storage, NSF-approved materials, and flexible mounting options. Each option below is suitable for truck use, with ribbed designs, built-in fittings, and compatibility with standard NPT connections. Use the buying guide to compare capacities, configurations, and installation considerations to fit your vehicle and workflow.
| Product | Brand | Capacity (Gallons) | Notes |
|---|---|---|---|
| Class A Customs | T-12500 | classAcustoms | 125 | Fresh or gray water, ribbed for support, built-in fittings |
| classAcustoms | T-10000 | classAcustoms | 100 | Fresh or gray water, ribbed, built-in fittings |
| RomoTech 60 Gallon Storage Tank | RomoTech | 60 | Heavy-duty, UV-resistant, BPA-free |
| RecPro Combo Pack (30 & 42 Gallon) | RecPro | 30 & 42 | NSF approved, American made, pressure tested |
| Class A Customs | T-6500 | classAcustoms | 65 | Fresh or gray water, ribbed for support |
Class A Customs T-12500 125 Gallon Tank
The T-12500 is designed for RV fresh water and gray water storage, manufactured with NSF-approved materials. It supports freshwater safety and can be configured for either fresh or gray water. The tank measures approximately 64.5 inches in length, with dimensions tailored for flexible placement on multiple sides. Built-in fittings include six 1.5″ female NPT connections and two 0.5″ fittings, with careful guidance on installation to preserve watertight seals.
Key features include ribbed exterior for added structural integrity, compatibility with standard fittings, and a design that accommodates rotating the tank to adjust height or width as needed. The product notes emphasize careful handling of fittings to avoid leaks and the use of plastic threaded fittings to prevent damage to the tank fittings. This option is suitable for truck applications that require a large freshwater or gray water reservoir with reliable fittings and adaptable orientation.
classAcustoms T-10000 100 Gallon Tank
The 100-gallon tank from Class A Customs also serves dual roles for fresh or gray water storage. It uses NSF-approved materials and features a ribbed exterior for enhanced support. The largest dimension is listed at 50 inches in length, with overall footprints designed to fit a range of mounting setups. As with the larger model, it includes a built-in six 1.5″ FPT fitting array and two smaller 0.5″ fittings. Prospective buyers should consider orientation flexibility and potential height/width adjustments during installation.
Performance notes highlight water safety for drinking use, compatibility with standard plastic threaded fittings, and the importance of not over-tightening connections to avoid damage. This tank is well-suited for truck operators needing a sizable reservoir with straightforward plumbing options.
RomoTech 60 Gallon Poly Storage Tank
This RomoTech tank offers versatile storage for potable water, agricultural solutions, or industrial liquids. Constructed from UV-stabilized, medium-density polyethylene, the tank is designed to resist cracking and outdoor degradation. It features a dome top that is corrosion-resistant and BPA-free, ensuring safe long-term water storage for farm, concession, or industrial settings. While not the largest option in this list, the 60-gallon capacity provides a robust, durable solution suitable for auxiliary storage on trucks where space is limited but reliability is essential.
RecPro Combo Pack 30 & 42 Gallon Tanks
RecPro’s combo pack includes 30 and 42 gallon tanks. These tanks are NSF approved and manufactured in America, with pressure testing common to the line. They are designed for fresh and gray water applications and can be integrated into mobile setups where space and configuration flexibility matter. They are suitable for smaller auxiliary storage needs on trucks or concession setups requiring multiple tanks for different water lines or use cases. The emphasis on pressure testing and NSF compliance supports reliability and safety for on-the-road installations.
Class A Customs T-6500 65 Gallon Tank
The T-6500 is a 65-gallon fresh or gray water holding tank built by Class A Customs. It follows the same NSF-approved material standards and ribbed exterior structure for added support. With dimensions around 44.5 inches in length, the tank remains able to sit on multiple sides and supports height/width adjustments through orientation changes. It includes two 1.5″ FPT fittings and two 0.5″ fittings, with explicit guidance to avoid over-tightening and to use plastic threaded fittings to protect the tank fittings during install.
Buying Guide
Capacity needs and vehicle space: Larger tanks provide longer autonomy between refills but require more mounting space and weight management. For trucks, consider the available flat areas, clearance, and the ability to rotate or reposition tanks to fit behind or under components.
Material and safety: NSF-approved materials ensure water quality, especially for drinking water. BPA-free plastics help prevent contamination and leaching. For long-term outdoor use, UV resistance reduces degradation and extending tank life.
Fittings and plumbing: Built-in fittings (often 1.5″ NPT) simplify installation and reduce the risk of leaks. Plan for sealants, gaskets, and compatible plastic threaded fittings to avoid damage to tank threads. Check whether you need additional fill fittings or venting for non-pressurized use.
Installation orientation: Tanks labeled as rotatable or able to sit on multiple sides offer installation flexibility. Ensure you have enough room to maneuver and secure the tank to minimize movement during transit.
Maintenance and cleaning: Tanks that are easy to drain and clean minimize contamination risks. Consider accessibility for cleaning, especially in concession or food truck environments where hygiene is critical.
Cost versus utility: Compare not only the upfront price but also the overall value, including fittings, mounting hardware, and compatibility with your existing hoses and pumps. For truck operations needing robust, long-term storage, prioritize rugged construction and NSF certification.
Maintenance and service life: Tanks with ribbed construction offer structural integrity but verify the availability of replacement fittings and warranty coverage. When mounting, ensure electrical or mechanical components are not compromised and that access for inspection remains possible.