Choosing a reliable grey water tank is essential for any food truck operation. This guide highlights top options that balance capacity, durability, and compliance, helping you select a tank that fits your mobile kitchen needs. All selections focus on grey and fresh water storage suitable for concession trailers and food trucks.
| Product | Brand | Capacity Options | Notes |
|---|---|---|---|
| RecPro Fresh & Gray Water Holding Tank Combo (10 & 16 Gallon) | RecPro | 10 & 16 Gallon | Pressure tested; Made in America |
| RecPro Fresh & Gray Water Holding Tank Combo (30 & 42 Gallon) | RecPro | 30 & 42 Gallon | NSF Approved; Pressure tested |
| RecPro Fresh & Gray Water Holding Tank Combo (21 & 30 Gallon) | RecPro | 21 & 30 Gallon | TEI certifies IAPMO standards |
| Fresh Gray Water Holding Tank Combo (16 & 21 Gallon) | A.A | 16 & 21 Gallon | Rotational molded; Seamless |
| Class A Customs 35 Gallon Tank | classAcustoms | 35 Gallon | NSF approved; Built-in fittings |
Note: The products listed are designed for grey and fresh water storage in mobile kitchens. Check installation space, tank fittings, and compatible venting before purchase for a smooth setup in your food truck.
RecPro 10 & 16 Gallon Grey Water Combo

RecPro’s 10 and 16 gallon combo is an entry-level solution for compact concession setups. The tanks are pressure tested and manufactured in the United States, ensuring durability for daily use in mobile kitchens. For food truck operators, the smaller capacity models offer flexible installation in tight spaces behind sinks or under prep areas. Regular cleaning before use is recommended to maintain sanitation standards.
- Capacity: 10 gallon fresh water and 16 gallon gray water storage (combo)
- Accessory and inlet considerations require matching fittings and hoses
- Manufactured in America; pressure tested
- Recommended cleaning prior to first use
RecPro 30 & 42 Gallon Grey Water Tank Pack

This larger combo is suited for medium-to-large food trucks with higher daily wash needs. The 30 and 42 gallon pair offers extended capacity for grey and fresh water storage, reducing the frequency of emptying and refilling. The tanks are NSF approved and built to endure commercial use. Regular inspection of fittings and potential venting requirements is advised for long-term reliability.
- Capacities: 30 gallon and 42 gallon
- NSF approved; pressure tested
- Made in America
- Consider venting and access fittings for installation
RecPro 21 & 30 Gallon Grey Water Tank Set

Ideal for mid-sized operations, this combo provides flexibility between 21 and 30 gallons. The set includes guidance for cleaning prior to use and TEI certification to IAPMO standards, ensuring compliance for food service applications. Operators should plan for appropriate inlet and vent connections and verify that the tank dimensions fit the vehicle layout.
- Capacities: 21 gallon and 30 gallon
- TEI certified to IAPMO standards; combo pack
- One-piece construction avoids seam leaks
Fresh Gray Water Tank Combo (16 & 21 Gallon)

This rotationally molded set provides durable, seamless construction with 16 and 21 gallon options. The absence of seams reduces the risk of leaks, a key consideration for mobile kitchens subjected to movement and varying road conditions. The materials are BPA-free and designed for potable water storage use in other contexts, but are suitable for gray water in hospitality settings when paired with appropriate venting and drainage hoses.
- Capacities: 16 gallon and 21 gallon
- Rotational molded, seamless design
- BPA-free materials; suitable for durable storage
Class A Customs 35 Gallon Tank

The 35 gallon tank from Class A Customs is a compact yet sizable option capable of serving longer shifts between dumps. It is NSF approved, with built-in fittings including dual 1.5″ and two 0.5″ ports for flexible plumbing configurations. The tank is designed to be watertight and suitable for either fresh or gray water storage in mobile setups, meeting standard requirements for food service vehicles.
- Capacity: 35 gallon
- NSF approved; built-in fittings
- Two 1.5″ and two 0.5″ NPT fittings; watertight design
Buying Guide: Key Considerations For Grey Water Tanks In Food Trucks
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<liCapacity needs: Match tank size to daily wash and storage cycles. Smaller trucks benefit from 10–16 gallon ranges, while busier setups may require 21–42 gallon pairs or larger single tanks.
- Material and safety: Look for BPA-free, durable plastics and NSF/IAPMO certifications when possible to ensure safe, compliant storage for water-related uses in a mobile kitchen.
- Fittings and compatibility: Check inlet/outlet sizes (commonly 1.5″ or 0.5″ NPT) and ensure the tank includes or is compatible with necessary fittings, hoses, and venting.
- Seam integrity: One-piece or seamless construction reduces leak risk, especially important on roads with constant motion.
- Ventilation and drainage: Proper venting is essential to prevent pressure buildup. Plan drainage routes that accommodate sink locations and wastewater disposal regulations for your area.
- Cleanability: Choose tanks that are easy to clean and sanitize, with accessibility for routine maintenance and sanitation protocols required in food service.
- Space and installation: Measure available under-counter or under-sink space, and verify that the tank shape (length, width, height) fits your vehicle’s layout and mounting options.
- Compliance and labeling: Ensure that the tank is appropriate for grey water use if that’s your intended storage, and follow local health department guidelines for wastewater management in mobile food operations.