Rainwater Tanks | MARS Rain Tank
MARS tanks

Rainwater Tanks

Rainwater Bladder Tanks flexible tank USA Made

MARS rainwater tanks are an easy way to store, collect and reuse rain water. Designed as a low profile opion for inside or outside rainwater harvesting storage, these rain tanks are perfect for tight storage areas like basements, under decks, or in crawl spaces. MARS rain collection tanks can be made with either potable or non potable fabrics with NSF and FDA compliant material. Built to contain from 25 up to 210,000 gallons of liquid, they are ideal for rainwater harvesting applications like:

  • Residential rain water collection
  • Fire sprinkler systems
  • Remote area water storage
  • Firefighter water supply
  • Industrial water storage
  • Storage in existing cisterns
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Bladder Tank Sizes and Specs

Rain Tank Product Flyer

MARS Rainwater Tank Advantages

In order to provide you with the best Rainwater Harvesting Tank water quailty possible, a drinking water grade liner can be built into these rain collection tanks to help keep your collected rain water storage safe for drinking. MARS rainwater bladder tanks are constructed with flexible material that rises with the water level. Both the tank and liner are manufactured to meet your requirements. Custom or large rainwater storage tanks may be accomdated upon request. Each MARS rain bladder is made in the USA.


  • Fabric options: non-potable and potable (NSF 61 and FDA compliant) fabrics
  • Low profile
  • Cistern tank liner prefabricated with tank
  • Capable of withstanding exposure to the outdoors
  • Standard fittings: (2) 2" fill and discharge fittings


  • Fits in small or tight spaces
  • Folds up for easy storage
  • Easy installation
  • Multiple Sizes: 25 to 210,000 gallons
  • Fits in Crawl Spaces, basements or under porches

How much water collection is necessary to supply your home, factory, industry or area? This Water Consumption Calculator can help you determine which capacity tank you might need. See available sizes of rainwater tanks.
Not sure which tank you need? We can help! Call us at +1-772-646-0597

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Request a Quote

If you have questions about any of our products, give us a call at +1-772-646-0597 or request a price quote.

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