90 Gallon Mobile Detailing Water Tank — Compact Rectangular Poly Tank
Out of stock
Built for mobile auto detailers who need more water on board without giving up more floor space, this 90 gallon rectangular detailing water tank holds 50% more than our 60 gallon tank in an even smaller footprint. At 38.5" x 26.5", it fits in truck beds, cargo vans, and utility trailers and leaves room for your pressure washer, hose reel, and supplies. A great size for a busy daily route or for detailers moving up from a smaller setup.
Why Detailers Choose This Tank
- More water, small footprint — 90 gallons in a 38.5" x 26.5" base. It gains capacity by going taller (25") instead of wider, saving floor space in your rig.
- One-piece seamless polyethylene — no seams or welds to leak. Rugged, impact-resistant construction holds up to daily loading, rough roads, and life on the route.
- Manageable at ~45 lb empty — easy to position, strap down, and plumb into your rig.
- Versatile storage — suitable for potable water, gray water collection, most liquid agricultural chemicals, and a wide range of industrial chemicals.
Specifications
- Capacity: 90 gallons
- Dimensions: 38.5" L x 26.5" W x 25" H
- Empty weight: ~45 lb
- Approx. weight when full: ~795 lb (90 gallons of water ≈ 750 lb)
- Construction: One-piece seamless polyethylene
- Shape: Rectangular
Detailing Water Tank FAQs
How much does a 90 gallon water tank weigh when full?
Water weighs about 8.34 lb per gallon, so 90 gallons is roughly 750 lb — about 795 lb total with the tank. Check your vehicle's payload rating with your pressure washer and equipment included, and strap the tank down securely before driving.
Will this tank fit in my truck bed or van?
With a 38.5" x 26.5" base, it fits in most full-size and mid-size pickup beds, cargo vans, and small utility trailers. At 25" tall, check clearance under a tonneau cover, camper shell, or van shelving. Measure your space before ordering to be sure.
Should I get the 60, 90, or 200 gallon tank?
It depends on how many vehicles you wash per fill, your wash method, and your flow rate. The 60 gallon detail tank is the lowest-profile option for lighter setups. The 90 is the middle ground for a full daily route. The 200 gallon detail tank is built for high-volume detailers, fleet washing, and trailer or larger-truck setups.
Can I store drinking water in it?
Yes. The polyethylene construction is suitable for potable water storage, as well as gray water and a wide range of chemicals.
Questions about setting up your detailing rig? Call our Oregon City shop at 503-403-6185, Monday–Thursday, 8am–4pm Pacific.
PROP 65 WARNING: This product contains a chemical known to the State of California to cause cancer. For more information, go to www.p65warnings.ca.gov.
About Expert Power Wash
Expert Power Wash is a family-owned pressure washing equipment shop in Oregon City, OR, run by Tim and Kristina. Before we built equipment, we ran our own pressure washing business for more than ten years — so the parts and chemicals on our shelves are the ones we trust on real jobs.
Our storefront stocks thousands of parts, chemicals and supplies, most in-stock orders ship the same day, and when you call 503-403-6185 you talk to people who have run this gear.
Freight Shipping & Pickup
This item isn't eligible for free shipping. It ships LTL freight on a pallet, and the freight rate for your region is shown at checkout. Choose Business / Loading Dock if you have a dock, forklift, or help to unload, or Residential with Liftgate and the carrier will lower the pallet to the ground.
FREE local pickup is available at our Oregon City shop, Monday–Thursday 8am–4pm.
