10 Best Rv Fresh Water Tanks of 2025

Tested and Reviewed: Top 10 Rv Fresh Water Tanks deals with expert ratings from 8.1 to a perfect 10

September 2025 Edition

Editor's Choice

9.7

A.A

30 Gallon RV Fresh/Gray Water Tank 34" x 18" x 12" - BPA Free (30 Gallon)

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Editor's bottom line:

“This rv fresh water tanks is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

This 30 gallon water tank measures 34" x 18" x 12" (not including fittings)
All tanks come with (1) 1.25" water fill inlet and (3) 3/8" NPT connections. Non-Pressurized Tank - The tank must be vented
One piece seamless construction - No Seams to burst
These rotational molded fresh water tanks are made from a high quality durable polyethylene material.
Stain, corrosion and rust resistant features make them ideal for replacement or OEM installation on RVs, horse trailers or marine products.

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Picked by 210 people today

9.5

classAcustoms

Class A Customs | RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks

Main Highlights

Combo Pack (ONE) 30 Gallon & (ONE) 40 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
30 and 40 GALLON EACH TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
30 GALLON TANK MEASUREMENTS 34.5 x 12 x 17.5 -Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32 +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
40 GALLON TANK MEASUREMENTS 39.5 x 13 x 18 -Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32 +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)

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9.5

Ameri-Kart

Ameri-Kart 57 Gallon RV Fresh Water Tank for Drinking and Potable Water, for Campers, Trailers, and RVs, WT-5553, 43-Inch x 25-Inch x 13-Inch

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Main Highlights

57 GALLON TANK - Ameri-Kart Fresh water tanks are MADE IN THE USA - BPA-Free Fresh Water Tanks are for CLEAN DRINKING WATER USE - Perfect for motorhomes, trailers, tiny houses, RVs and campers
EASY TO INSTALL - fresh water tanks are a critical component to all recreational vehicles - Fitting locations allow multiple options for installation. Built-in fittings include: (TWO) 1.5" balloon Style Threaded Female NPT standard - fittings are sealed, to use remove inner membrane with a razor knife. (TWO) 0.5" Threaded female NPT standard - fittings are plugged, to use remove threaded plugs. Hardware not included - DO NOT PRESSURIZE TANK. DO NOT HANG TANK BY STRAPS OR PLACE WEIGHT ON TANK.
DURABLE & RELIABLE - OEM quality tank made from weather resistant and impact-resistant plastics. RV Fresh Water Tank design prevents leaks and ensures long service life. Built to standards specified by IAPMO (International Association of Plumbing and Mechanical Officials).
NOT INCLUDED - hardware, mounting hardware, gate valves, piping, hoses, fittings
USA MADE - Proudly manufactured by Ameri-Kart in Elkhart County, Indiana - the RV Capital of the World

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9.2

classAcustoms

Class A Customs | One (1) RV Fresh and Gray Water 30 Gallon Tank | T-3000

Main Highlights

30 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
WATER TANK MEASUREMENTS: 34.5 Longest Length (not including fittings) x 12 x 17.5 - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32 +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
TANK BUILT-IN TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.: (TWO) 1.5" Balloon Style Threaded Female NPT Standard - fitting will be closed, to use remove inner membrane with razor knife (TWO) .5" Threaded Female NPT Standard - open fitting, unsealed
NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.

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9.0

classAcustoms

Class A Customs | T-4000 | One (1) RV Fresh Water 40 Gallon Tank, Grey Water

Main Highlights

40 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
WATER TANK MEASUREMENTS: 39 1/2 Longest Length (not including fittings) x 13 x 18 - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32 +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.

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8.8

classAcustoms

Class A Customs | One (1) RV Fresh and Gray Water use 35 Gallon Tank | T-3500 | 38.75" X 12" X 17.375" | Camper and Concession Trailer/Food Truck

Main Highlights

35 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
WATER TANK MEASUREMENTS: 38.75 Longest Length (not including fittings) x 12 x 17.375 Average thickness 7/32 +/- (+/- .25" on each measurement)
TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.
Perfect for Concession and food vendor trucks and trailers

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Best Value

8.6

Save 14%

RecPro

RecPro RV Fresh Water Tank 21 Gallon for Drinking and Potable Water | 39.25" x 8" x 16" | Fresh or Gray Water Plastic Storage | Made in America

14% OffFree Shipping

Main Highlights

Made For Your RV - This RecPro water tank is specifically designed for RV and trailer camping. Its sturdy construction using polyethylene material ensures it can withstand the rigors of travel and provide a reliable source of fresh drinking water during your adventures.
Proudly Made In USA - Rest assured that you are getting a high-quality product made right here in the USA. Our commitment to quality means you can trust this water tank to last for miles on the road.
Endless Supply Of Clean Water - With a capacity to hold 21 gallons of drinking water, our RV freshwater tank will keep you and your family hydrated throughout your travels. And in case of emergencies, it can also serve as a backup supply.
Sanitary And Leak-Proof - We know how important hygiene is on the road, which is why our RV water tank is designed to be sanitary and leak-proof. You can trust that your water will stay clean and safe for consumption.
Built To Last - Say goodbye to rust and corrosion with our durable RV water tank. No matter where your adventures take you, this sturdy tank will keep providing you with fresh water for years to come. Upgrade your RV today!

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8.3

classAcustoms

Class A Customs | 20 Gallon RV Concession Fresh Water Tank with Plumbing Kit & 12 Volt Water Pump | T-2000-BPK-PUMP

Main Highlights

20 Gallon Fresh Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe WATER TANK MEASUREMENTS: 32.5 Longest Length (not including fittings) x 11.75 x 11.75 - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32 +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
BASIC PLUMBING KIT INCLUDES - (TWO) 0.5 Hose Barb to 0.5 Male Pipe Thread Adaptor (FOUR) 0.5 Hose Clamp (ONE) 1.25 Hose Barb to 1.5 Male Pipe Thread Adaptor (TWO) 1.5 Hose Clamps (ONE) 1.5 Male Pipe Thread PVC Male Adaptor (ONE) 5ft. Section of 0.5 ID Vent/Draw Hose (ONE) 5ft. Section of 1.25 ID (1.375 OD) Fill Hose
classAcustoms 12 VOLT Fresh Water Pump MODEL # 12V3 - FRESH WATER USE ONLY - OPEN FLOW 11.6LPM / 3.0GPM AMPS 4.0A MAX AMPS 8.0A SHUT OFF PRESSURE 45PSI/3.1 Bar ON-DEMAND PUMP only turns on when senses pressure changes in line 12 VOLT POWER ONLY 110/115/220 volt will damage the unit - READ INSTRUCTION BOOKLER BEFORE INSTALLATION

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8.1

classAcustoms

Class A Customs | T-7500 | 75 Gallon Fresh Water Holding Tank

Main Highlights

75 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
WATER TANK MEASUREMENTS: 50.5 Longest Length (not including fittings) x 17.5 x 19.5 - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32 +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and water-tight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT Over-tighten fitting damage will occur Use plastic threaded fittings, metal threads may damage tank fittings
NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
Great extra water storage in RV, pop-up camper, off-road vehicles, concession trailers, hot dog carts, smaller food vendors and portable hand washing sinks. Class A Customs Manufactures this item in the USA in Elkhart, Indiana. Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process.

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8.1

classAcustoms

Class A Customs | 42 Gallon RV Concession Fresh Water Tank with Plumbing Kit & 12 Volt Water Pump | T-4200-BPK-PUMP

Main Highlights

42 Gallon Fresh Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe WATER TANK MEASUREMENTS: 27.5 Longest Length (not including fittings) x 15.25 x 22.5 - Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32 +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads
NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
BASIC PLUMBING KIT INCLUDES - (TWO) 0.5 Hose Barb to 0.5 Male Pipe Thread Adaptor (FOUR) 0.5 Hose Clamp (ONE) 1.25 Hose Barb to 1.5 Male Pipe Thread Adaptor (TWO) 1.5 Hose Clamps (ONE) 1.5 Male Pipe Thread PVC Male Adaptor (ONE) 5ft. Section of 0.5 ID Vent/Draw Hose (ONE) 5ft. Section of 1.25 ID (1.375 OD) Fill Hose
classAcustoms 12 VOLT Fresh Water Pump MODEL # 12V3 - FRESH WATER USE ONLY - OPEN FLOW 11.6LPM / 3.0GPM AMPS 4.0A MAX AMPS 8.0A SHUT OFF PRESSURE 45PSI/3.1 Bar ON-DEMAND PUMP only turns on when senses pressure changes in line 12 VOLT POWER ONLY 110/115/220 volt will damage the unit - READ INSTRUCTION BOOKLER BEFORE INSTALLATION

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Our Best Overall Choice

Best Choice

9.7

A.A

30 Gallon RV Fresh/Gray Water Tank 34" x 18" x 12" - BPA Free (30 Gallon)

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

This 30 gallon water tank measures 34" x 18" x 12" (not including fittings)
All tanks come with (1) 1.25" water fill inlet and (3) 3/8" NPT connections. Non-Pressurized Tank - The tank must be vented
One piece seamless construction - No Seams to burst
These rotational molded fresh water tanks are made from a high quality durable polyethylene material.
Stain, corrosion and rust resistant features make them ideal for replacement or OEM installation on RVs, horse trailers or marine products.

Show Price

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