6 Best Trailer Water Tanks For Goats That Simplify Rotational Grazing
Rotational grazing for goats requires mobile water. Our review of the 6 best trailer water tanks helps you find the right portable solution for your herd.
You’ve done the hard work of setting up temporary fencing, the goats are eager for fresh browse, and you’ve moved them to a new paddock. Then it hits you: the water trough is a quarter-mile away, back at the barn. So begins the daily ritual of hauling sloshing buckets by hand or wrestling with a heavy, kinking hose, turning a smart grazing plan into a frustrating chore. A mobile water system isn’t just a convenience; it’s the missing link that makes rotational grazing truly work on a small farm.
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Why Mobile Water is Key for Goat Pasture Rotation
Bringing water to the goats, not the other way around, is a fundamental shift in managing pastures. When water is fixed in one location, goats will create permanent trails back to it, compacting the soil and overgrazing everything nearby. A mobile water tank lets you place their water source right in the new paddock, encouraging them to graze evenly and utilize the entire area.
This simple change has huge ripple effects. Pastures recover faster and more uniformly because the herd’s impact is distributed. You also get healthier animals. Goats with easy access to clean water are better hydrated, more resilient to heat stress, and less likely to drink from questionable puddles.
The biggest win for the busy farmer is time and energy. Instead of multiple trips with heavy buckets, you move a trailer once every few days. This frees you up to focus on other essential tasks. A good mobile water setup transforms rotational grazing from a labor-intensive ideal into a practical, sustainable reality.
Tarter 65-Gallon Oval Tank: A Durable Classic
When you need something that just won’t break, you reach for galvanized steel. The Tarter 65-Gallon Oval Tank is a workhorse, plain and simple. Its heavy-duty steel construction means it can handle being jostled on a trailer, and more importantly, it stands up to the relentless curiosity and rubbing of a goat herd.
This is a "buy it once" kind of tank. Unlike some plastics, it’s completely immune to UV degradation, so you can leave it in the sun for decades without worry. The low, oval profile provides a stable center of gravity, making it a safe choice for mounting on a small utility trailer. It’s a blank canvas, ready for your custom plumbing.
The tradeoff for that durability is weight and a bit of DIY. You’ll need to drill it and install your own float valve and fittings. But for farmers who value longevity over out-of-the-box convenience, this tank is an investment that pays off for years. It’s the kind of gear your grandkids might end up using.
High Country WT-55: Integrated Float Valve System
The High Country WT-55 is for the farmer who wants a smart, ready-to-go solution. This 55-gallon poly tank’s killer feature is its fully enclosed, top-mounted float valve system. Goats are masters at breaking, chewing, or "investigating" exposed plumbing, and this design brilliantly solves that problem by keeping the delicate parts completely out of reach.
Made from tough, FDA-approved plastic, it’s lighter than a steel tank and won’t rust. The design includes a drain plug for easy cleaning and a compact footprint that fits well in a UTV bed or on a small trailer. It’s a complete trough, not just a holding tank, so you hook up your supply hose and you’re done.
The convenience of the integrated system is also its main limitation. You’re locked into the built-in valve, so there’s less room for customization. However, for most rotational grazing setups, this is a massive advantage. It eliminates a common point of failure and saves you the headache of building your own protective cover for the float.
Enduraplas 100-Gallon Slimline for Larger Herds
As your herd grows, your water needs multiply. The Enduraplas 100-Gallon Slimline tank is a bulk-hauling solution for those with more mouths to water or who want to extend the time between refills. Its tall, narrow design is incredibly space-efficient, allowing it to sit snugly against the side of a trailer bed, leaving room for other gear.
This is a transport tank, not a drinking trough. The idea is to use its large capacity to feed a smaller, separate stock tank equipped with a float valve. This "mother ship" approach is perfect for servicing multiple paddocks or supporting a herd of 20 or more goats for several days, depending on the weather.
Because of its vertical design, securing it properly is non-negotiable. It must be strapped down tightly to prevent tipping on uneven terrain. But for managing water on a larger scale, this tank’s combination of high capacity and a small footprint is hard to beat. It’s a serious upgrade for a growing operation.
Norwesco 35-Gallon Leg Tank for Custom Setups
For the ultimate custom build, the Norwesco Leg Tank is the perfect starting block. These horizontal tanks feature molded-in legs that create a super stable, low-profile base. This design makes them incredibly easy to securely strap onto a custom-built trailer frame or directly into the bed of a UTV.
Store and transport liquids with this durable 35-gallon Norwesco tank. Its horizontal design with integrated legs provides stability, while UV-stabilized polyethylene ensures long-lasting outdoor use.
This tank is a component, not a complete system. It provides the water storage, but you provide the vision. You’ll need to add an outlet valve, run a hose to a separate trough, and install a float valve. This is ideal for farmers who want to build a water trailer perfectly suited to their specific terrain and needs.
The 35-gallon size is a sweet spot for many small herds—enough for a couple of days but still light enough to be manageable. If you enjoy a good project and want total control over your system’s design and function, starting with a leg tank is the most flexible and reliable path.
Behlen Country Poly Stock Tank: Rugged Simplicity
Sometimes the simplest solution is the best one. The common poly stock tank, available at any farm supply store, can easily be adapted for mobile use. The Behlen Country 50-gallon model is a great example—it’s lightweight, affordable, and tough enough for farm life.
To make it mobile, you simply strap it down to a small trailer or the back of a truck. You’ll need to install a float valve to automate refilling from a larger transport tank or a long hose. Its main advantage is its accessibility and low cost. If you already have one, you’re halfway to a mobile water system.
The biggest consideration is that these tanks aren’t designed for transport. The plastic can become brittle with age and sun exposure, and a determined goat might try chewing on the rim. However, for a budget-friendly and straightforward setup, a basic poly tank gets the job done without overcomplicating things.
Chem-Tainer Aqua-Haul 50: The All-in-One Unit
The Chem-Tainer Aqua-Haul series is purpose-built for moving water around the farm. These tanks bridge the gap between a simple leg tank and a full water trailer. They are made from durable, food-grade polyethylene and often include molded-in gallon markers and a large, easy-to-fill lid.
This 50-gallon model is shaped for transport, with a low center of gravity that sits securely in a vehicle bed. It comes with a pre-installed bulkhead fitting at the bottom, making it simple to attach a valve and hose to feed a drinking trough. It’s a robust, no-fuss container designed for exactly this kind of work.
Like other transport tanks, this isn’t where the animals drink. You’re using it as a mobile reservoir. But its thoughtful design features—like the secure lid and easy-to-read volume markers—show that it was made by people who understand the practical challenges of farming. It’s a professional-grade component for a reliable DIY system.
Choosing Your Tank: Capacity, Material, and Flow
Making the right choice comes down to three key factors: how much water you need, what material you trust, and how you want the water to get to your goats. There’s no single "best" tank, only the best tank for your specific operation.
First, capacity. A good starting point is to plan for two gallons per goat per day in hot weather. A 10-goat herd will drink around 20 gallons a day, so a 50-gallon tank gives you a two-day buffer. Consider how often you’re willing and able to refill the tank when choosing a size.
Next, material. This is a classic tradeoff between durability and weight.
- Galvanized Steel: Extremely durable, UV-proof, and goat-resistant. It’s also heavy and requires DIY plumbing.
- Polyethylene (Poly): Lightweight, rust-proof, and often comes in ready-to-use designs. It can be damaged by chewing and will eventually degrade from sun exposure, though quality UV-stabilized plastics last for many years.
Finally, flow system. Are you looking for an all-in-one trough where the goats drink directly from the mobile tank (like the High Country)? Or do you prefer a larger transport tank (like the Enduraplas or Norwesco) that feeds a small, separate drinking trough? The transport tank method is more versatile and scalable, but the all-in-one is simpler to deploy. Your choice depends on your herd size, budget, and how much you enjoy plumbing projects.
Ultimately, a mobile water tank isn’t just a piece of equipment; it’s a tool that unlocks the full potential of your pastures and your time. By eliminating the single biggest chore of rotational grazing, you make the entire system more efficient, resilient, and enjoyable. Choose the tank that fits your herd, your property, and your style, and you’ll spend less time hauling water and more time watching your goats and pastures thrive.
