Choosing the right small grey water tank and related accessories can help keep your RV, camper, or tiny home sanitary and odor-free. This guide highlights compact grey water solutions and deodorizing aids designed for ease of installation, durability, and safe disposal. The selections focus on compact capacities, user-friendly fittings, and environment-friendly formulations to support hassle-free grey water management on the road.
| Product | Brand | Capacity | Key Benefit |
|---|---|---|---|
| Walex Elemonate Grey Water Tank Deodorizer | Walex | 5 Pack | Rapid-dissolving tablets for odors in grey water lines |
| Camco TST Grey Water Odor Control | Camco | 4 oz / 40-Gal (varies by bottle) | Removes grease buildup and odors; septic-safe |
| Camco TST Camper/RV Grey Water Odor Control (Lemon) | Camco | 32 oz | Biodegradable formula, septic-safe, lemon scent |
| Class A Customs UM-2000 UnderMount 20 Gallon | Class A Customs | 20 gal | Fresh or gray water holding tank; NSF materials |
| classAcustoms T-1000 10 Gallon Tank | classAcustoms | 10 gal | Fresh or gray water storage; built-in fittings |
Below are five targeted options that address grey water management in compact spaces, with installation flexibility and practical maintenance considerations for American RV owners.
Walex Elemonate Grey Water Tank Deodorizer
Walex Elemonate delivers maximum odor control for grey water lines. The 5-pack format is designed for frequent use across sinks, showers, and drainage paths in RVs, boats, and homes. Each tablet dissolves rapidly to tackle grease, organic sludge, and odors, helping maintain a fresh indoor environment during travel. The product is positioned as simple to use, with each tablet capable of treating up to 60 gallons of tank or drain volume, making it a versatile option for smaller rigs with frequent grey water turnover.
Camco TST Grey Water Odor Control
This Camco product focuses on eliminating odors and grease buildup in grey water systems. It is designed to keep sinks, showers, and drainage lines clear, reducing the risk of clogs and maintaining smoother flow during travel. The formula is described as safe for septic systems, non-staining, and environmentally mindful, aligning with typical RV waste management practices. It complements routine tank maintenance by addressing odor sources at the source rather than merely masking them.
Camco TST Camper/RV Grey Water Odor Control Lemon (32-oz)
This larger Camco bottle provides a lemon-scented, biodegradable capability for grey water odor control. It is formulated to neutralize odors and grease, making RV living more pleasant during extended trips. The product is described as septic-tank-friendly and non-staining, supporting safe disposal. Its size makes it suitable for campers with higher grey water output or for use across multiple drains, including sinks and showers.
Class A Customs UM-2000 UnderMount 20 Gallon
The UM-2000 is a compact under-mount solution designed for fresh and gray water holding. With a 20-gallon capacity, it emphasizes NSF-approved materials and versatility—suitable for both fresh drinking water and gray water storage. It features built-in fittings (two 1.5″ NPT and two 0.5″ NPT) that support flexible installation options. The tank’s dimensions allow placement in constrained spaces, and the design notes note water-tight fittings and compatibility with various mounting configurations, making it a practical choice for RVs with limited storage.
classAcustoms T-1000 10 Gallon Tank
The T-1000 offers a compact 10-gallon option for fresh or gray water storage. It highlights NSF-approved materials for safety and suitability for both drinking water and gray water storage. The tank includes built-in fittings (two 1.5″ NPT and two 0.5″ NPT), with clear guidance to avoid over-tightening and to use plastic fittings to protect threads. Its smaller footprint is ideal for tight RV spaces, concession setups, or portable camping rigs needing a reliable water holding solution.
classAcustoms T-0500 5 Gallon Tank
The T-0500 provides a compact 5-gallon option for spaces where space is at a premium. With NSF-approved materials suitable for fresh and gray water, this tank is designed to be versatile across mobile setups. It includes integrated fittings (one 1.5″ NPT and three 0.5″ NPT) and emphasizes a watertight seal to prevent leaks. Its small size makes it suitable for tiny house RVs, boat installations, or seasonal camping setups where minimal storage impact is essential.
Buying Guide: Key Considerations For Small Grey Water Tanks
Capacity and space
Small grey water tanks range from 5 to 20 gallons. Assess your daily grey water output, space constraints, and mounting options in your RV or camper. Under-mount and compact configurations can maximize interior space, while satin coatings and seamless construction reduce leak risk.
Material quality and safety
Look for NSF-approved materials and BPA-free plastics. Durable, weather-resistant tanks protect against UV exposure and road vibrations. For potable storage, ensure tanks are clearly labeled for safe handling of gray water and avoid cross-contamination with fresh water tanks.
Fittings and installation
Built-in fittings (NPT sizes) determine installation flexibility. Dual 1.5″ and 0.5″ fittings provide multiple connection options. Ensure you have compatible hoses and clamps, and verify that fittings are sealed to prevent leaks after mounting.
Sealing, maintenance, and sanitation
Seals and gaskets matter for preventing odor bleed and leaks. Regular cleaning with approved tank cleaners helps avoid buildup. Choose products that are septic-safe when you intend to dispose of contents through standard waste systems.
Odor control and drain care
Grey water odors can be mitigated with odor-control tablets and enzymes. Look for biodegradable formulas that neutralize grease and organic matter without harming septic systems. Consider products that are safe for multiple drain lines, including sinks and showers.
Versatility and future-proofing
For weekend warriors and full-timers, a tank that can serve as fresh or gray water storage adds flexibility. Under-mount designs enable retrofits in limited spaces. If you anticipate expanding your rig, select a tank with an adaptable size or compatible fittings to accommodate a future upgrade.