Finding a reliable 100 gallon RV tank for black water storage is essential for long trips, family camping, and off-grid adventures. This guide reviews five top 100 gallon options, focusing on durability, suitability for waste or gray water, and ease of installation. Each product below includes a direct link to the Amazon listing and core features to compare at a glance.
| Product | Brand | Type | Capacity | Key Benefit |
|---|---|---|---|---|
| RomoTech 82123929 Horizontal Square Reservoir | RomoTech | Polyethylene Tank | 100 gallon | UV-stable, outdoor-ready, suitable for non-flammable liquids |
| ZSLTLDU 100 Gallon Water Bladder | ZSLTLDU | Collapsible PVC Tank | 100 gallon | Portable, quick installation, clear volume indicators |
| RecPro RV Fresh Water Tank 100 Gallon | RecPro | Polyethylene Tank | 100 gallon | US-made, designed for RV fresh water, robust build |
| classAcustoms T-10000 100 Gallon Tank | classAcustoms | MDPE Tank | 100 gallon | Ribbed for extra support, versatile inlet/outlet options |
| Camco Rhino Tote Tank (36-Gallon) | Camco | Portable Waste Tank | 36 gallon | Large wheels and gate valve for easy transport; included accessories |
RomoTech 100 Gallon Horizontal Square Tank
RomoTech’s 100 gallon horizontal square reservoir is built from UV-stabilized, rustproof polyethylene, designed to resist outdoor exposure and rugged use. While labeled for non-flammable liquids, the tank supports potable water, agricultural chemicals, and industrial fluids, making it versatile for RV, agricultural, or emergency prep scenarios. A large fill cap, integrated drain, and molded bulkhead fittings enable quick refilling and efficient siphoning or hose connections during daily use. This option prioritizes durability and outdoor performance, with a focus on ease of cleaning and long-term reliability in harsh environments.
ZSLTLDU 100 Gallon Water Bladder
This 1000D PVC water bladder offers a portable, collapsible solution for RV water storage needs. It features a 0.9mm-thick PVC construction with high-temperature welding for resistance to leaks and tears. Included adapters streamline installation, including a union nipple, barbed fitting, and garden hose quick connector, making setup tool-free. The bladder’s clear level scale allows quick visibility of remaining water volume, helping users monitor usage and plan refills efficiently. It emphasizes portability and ease of storage when space is at a premium in an RV.
RecPro 100 Gallon Fresh Water Tank
RecPro’s 100 gallon fresh water tank is designed specifically for RVs and trailers, with a focus on reliability for drinking water. Made in the USA from polyethylene, the tank provides a sturdy and travel-ready solution that withstands RV travel rigors. While labeled for fresh water, its construction makes it a common choice for RVs needing a large-capacity storage option, ensuring a steady supply of clean water on extended trips. It’s framed as a long-haul solution with durability in mind.
classAcustoms T-10000 100 Gallon Tank
This Class A Customs model is a 100 gallon tank intended for fresh or gray water storage in RVs, campers, and tiny houses. It features six 1.5″ female NPT fittings and two 0.5″ fittings, enabling flexible installation. The tank is designed with ribbing for extra support and notes that the end user must determine inlet and vent placements, with hardware not included. It is made from NSF-approved MDPE materials, emphasizing water safety and compliance. The design supports multiple configurations and is compatible with various RV layouts while emphasizing water storage capacity.
Camco Rhino Tote Tank
Camco’s Rhino Tote Tank is a portable 36-gallon waste tank designed to simplify RV waste disposal when a direct sewer connection is unavailable. While not 100 gallons, it remains a popular companion piece for larger RV waste setups, featuring large, no-flat wheels for improved transport over varied terrain, a built-in gate valve, and a steel tow adapter for towing behind a vehicle. It’s particularly useful for extended stays at sites without an accessible dump station, offering an offboard solution that complements larger capacity tanks.
Buying Guide: Key Considerations For Selecting A 100 Gallon RV Black Water Tank
- Material durability: Look for UV-stable, impact-resistant plastics (HDPE/MDPE) or heavy-duty PVC to withstand outdoor exposure and road vibration. UV resistance reduces long-term degradation when tanks sit in sun.
- Intended use: Some tanks are marketed for “fresh water” or general liquids, while others are designed for waste or gray water. Verify compatibility with black water storage if the primary use is waste containment.
- Inlet/outlet configuration: Consider the number and size of fittings (for example, 1.5″ NPT or 3″ ABS outlets). Ensure compatible plumbing and ease of installation with your RV’s existing waste system.
- Capabilities and accessories: Large fill caps, integrated drains, bulkhead fittings, and included adapters simplify refilling and emptying. Some models come with wheels or portability features for on-site handling.
- Portability versus fixed mounting: Collapsible bladders and tote tanks provide portability, while rigid tanks require mounting space. Choose based on RV layout and travel plans.
- Maintenance and cleaning: Choose tanks designed for easy cleaning, with smooth interior surfaces and accessible drain points to minimize buildup and odors during frequent use.
- Compliance and safety: For water storage used for drinking, prioritize NSF/ANSI-compliant materials and food-grade plastics to ensure safety and regulatory alignment.
- Warranty and support: A robust warranty and clear installation guidance help address wear, leaks, or fitting issues over time.