Finding a reliable 50 gallon water tank involves evaluating durability, portability, and ease of use across outdoor, agricultural, and RV contexts. The following selections cover horizontal polyethylene tanks, rotomolded designs, collapsible bladders, and purpose-built fresh water options. Each product includes practical features like clear volume markings, easy-fill lids, and compatibility with pumps or hoses. Use this guide to compare capacity, materials, and mounting options to meet essential water storage needs.
| Product | Brand | Capacity | Key Strengths |
|---|---|---|---|
| RomoTech 82123919 Horizontal Square Reservoir | RomoTech Store | 50 gallons | Clear marking for volume, UV-stabilized, outdoor durability, built-in bulkhead and 3/4″ NPT outlet |
| RTS Plastics PCO-50 Gallon Tank | RTS Companies Inc. Store | 50 gallons | Vented cap for pump hookup, molded grad strips, ready drainage with siphon elbow |
| Chapin 98142 Water Storage Tank | Chapin International Store | 40 gallons | Translucent, chemical-resistant, UV protection, 2″ drain and garden-hose port |
| FoundGo Water Storage Bladder | FoundGo Store | Large capacity (bladder) | Emergency use, foldable/portable, dual ports, indoor/outdoor versatility |
| Class A Customs T-5000 50 Gallon Tank | Class A Customs | 50 gallons | NSF-approved materials, fresh/gray water option, varied orientation, two 1.5″ and two 0.5″ fittings |
RomoTech 50 Gallon Horizontal Water Tank
The RomoTech 82123919 horizontal square reservoir provides an accurate 50 gallon capacity with molded gallon and liter markings. Its natural translucent poly allows quick level checks for potable water or other non-flammable liquids. UV stabilization protects the tank from sun damage, while the rust-proof design ensures long outdoor life on farms, work sites, or in RV setups. A large 5-1/2″ lid opening makes filling and cleaning straightforward, and the built-in bulkhead with a 3/4″ NPT outlet supports efficient refilling, siphoning, and hose hookups.
Designed for rugged outdoor use, this tank resists warping, fading, and cracking across seasons of daily service. It is particularly well-suited to applications requiring visible liquid level and reliable outdoor performance. While it excels as a portable water storage solution, its squared shape also helps maximize space on trailers or equipment yards. The combination of viewable volume, outdoor durability, and easy access makes it a versatile option for irrigation, RV water storage, or small-scale agricultural tasks.
RTS Plastics 50 Gallon Rotomolded Tank
This rotomolded polyethylene tank emphasizes ease of use and reliability. It features a vented cap to prevent vacuum lock during pump hookup, promoting smooth refills. Molded-in grad strips with gallon markings offer quick volume checks, while the included siphon elbow enables full drainage. The design includes strap grooves for secure mounting during transport or stationary use, and a pre-installed bulkhead fitting allows fast, secure hose or valve connections. The seamless construction provides durability against impact and weather, making it ideal for long-term outdoor storage or portable irrigation setups.
With modular fittings and straightforward installation, this RTS tank supports flexible configurations for classrooms, farms, or workshop sites. Its rotomolded polymer body resists chemicals and weathering, helping maintain structural integrity under outdoor exposure. This makes it a practical option for users seeking dependable, easy-to-handle 50 gallon storage with built-in level monitoring and simple drainage.
Chapin 98142 40-Gallon Water Storage Tank
The Chapin 98142 tank focuses on mobility and durability for irrigation, cleaning, or emergency readiness. While it has a 40-gallon capacity, it emphasizes translucent, chemical-resistant poly construction with UV protection to resist sun damage. Its design includes a fast-draining system via a 2-inch drain and a molded 3/4-inch garden-hose port, enabling quick, controlled emptying. The combination of portability and robust seals ensures steady performance when moving water across trucks, tractors, or trailers.
Ideal for gardens, orchards, or remote locations, this Chapin tank balances ease of transport with practical pumping compatibility. The translucency provides quick visual checks on liquid levels, while the tank’s sealing mechanisms help preserve water quality. Users seeking a compact, reliable storage solution for outdoor irrigation or emergency water should consider this model among compact 40-gallon options that still offer solid drain and hose access.
FoundGo Water Storage Bladder
The FoundGo water storage bladder offers a large-capacity, portable solution suitable for emergencies, camping, RVs, and yard irrigation. Its foldable, lightweight design makes it easy to store when not in use, and the bladder can be deployed indoors or outdoors as needed. The container features two ports—an inlet around 1.26 inches and an outlet around 0.98 inches—supporting flexible water needs. Added armrest clasps improve carrying comfort, while the 0.7 mm thickness provides a balance between durability and portability.
This product is especially valuable where fixed water storage facilities are unavailable or impractical. It supports survival planning, disaster readiness, and temporary water distribution at events or work sites. The bladder’s versatility extends to yard watering, farm irrigation, outdoor recreation, and emergency response scenarios, offering a compact alternative to bulkier tanks without sacrificing capacity or reliability.
Class A Customs T-5000 50 Gallon Tank
The Class A Customs T-5000 50 gallon tank is built for RV and concession use, offering NSF-approved materials for safe fresh or gray water storage. The tank measures about 38.25 inches in length with a 14.25 by 22.25-inch footprint, designed to fit various configurations by rotating orientation. It includes two 1.5″ female NPT fittings and two 0.5″ female NPT fittings, allowing flexible plumbing layouts. The fittings are designed to be watertight when installed with the membrane removed, making it suitable for demanding RV, mobile kitchen, or concession applications.
Manufactured to meet safety standards, this model emphasizes compatibility with potable water storage needs, while offering flexibility in how it can be set up around a vehicle or trailer. The longer length provides capacities appropriate for continuous use in the field, though users should verify space constraints and fitting configurations for a particular setup. The combination of NSF materials and versatile fittings positions it as a practical choice for RV parks, event trailers, and outdoor markets requiring dependable 50 gallon capacity.
Buying Guide: Key Considerations For 50 Gal Water Tanks
Overview: When selecting a 50 gallon tank, consider material, durability, portability, and compatibility with pumps and hoses. PET and HDPE plastics provide lightweight, corrosion resistant options, while rotomolded construction offers high impact strength and longer outdoor lifespans. For emergency use or flexible setups, collapsible bladders add portability and compact storage.
Capacity And Markings: Look for tanks with clear volume markings to monitor water levels quickly. Markings should be resistant to fading under sunlight and chemical exposure. If you plan to refill with a hose or operate a pump, ensure compatible outlet fittings (NPT sizes such as 3/4″ or 1.5″).
Drainage And Fill Access: A large lid or fill opening simplifies cleaning and refilling. Built-in bulkheads or pre-installed fittings reduce assembly time and potential leaks. For rapid drainage or siphoning, consider models with dedicated drain ports or siphon elbows.
UV Resistance And Durability: Outdoor tanks should resist sun exposure, weather, and temperature fluctuations. UV-stabilized plastics, corrosion-resistant compounds, and rugged shells enhance longevity, especially in agricultural settings or RV use where tanks face daily outdoor use.
Mobility And Mounting: If you need portability, prioritize lighter materials and features like strap grooves or compact dimensions. For stationary arrangements, consider tanks with mounting grooves or flat bottoms designed for stable placement on trailers, trucks, or work sites.
Food-Grade And Safety: For potable water, opt for NSF-approved or food-grade materials to ensure water safety. Check for certifications and compatibility with drinking water standards to avoid contamination risks.
Cost And Availability: Compare total installed cost, including fittings and lids. Availability of replacements, replacement parts, and compatibility with standard hoses or pumps can influence long-term maintenance costs and ease of use.