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Comes with a 20 Year Warranty!

45 MIL EPDM Pond Liner

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  • Fish-safe 45 mil EPDM has been the standard liner for koi ponds and water features for over 30 years.
  • Extensively tested and the most trusted liner on the market; used by contractors nationwide.
  • Super flexible and much easier to install than preformed or rigid pond liners.
  • 20+ year warranty.
  • NOTE: Any size 400 square feet or larger may be subject to additional delivery charges to states west of the Mississippi. Please contact us for a quote!

Liner Calculator

Enter the largest measurement for each dimension. If you're digging your pond to be 10 feet wide on average, but there is one section that measures 12 feet wide, please use 12 feet as the width.
Liner is manufactured in widths divisible by 5. Therefore, our liner calculator always rounds up the width to the nearest multiple of five.

$42.95 - $5,565.00

Earn up to 86 points with purchase!

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45 mil  FISH-SAFE pond liner is the industry standard in water gardens and koi ponds! We stock fish-safe liner from three US-based manufacturers:  Firestone PondGuard Brand, Carlise Aquatough Brand, and Anjon LifeGuard Brand.  All three brands have been widely used for over 25 years with thousands of pond installations. Your Fish-safe liner may be any one of these brands depending on our availability at the time your order is shipped!

This sturdy, long lasting, super flexible rubber liner is fish, pet, livestock and wildlife safe.

The liner is much easier to install than a pre-formed pond and has a minimum 20 year Manufacturer warranty!

While this liner is made from the same material (EPDM) as some roofing liner, FISH-Safe EPDM liner is guaranteed to use no treatments during the manufacturing process that could potentially harm fish or be toxic in any way. 


Shipping Restrictions:

Sizes 400 square feet and larger can only be shipped to the 48 continental United States.

Any size 400 square feet or larger may be subject to additional delivery charges to most states west of the Mississippi. Please email us for a quote.

  • 5
    Perfect liner for raised garden bed

    Posted by Susan Johnson on Jun 24th 2019

    It was perfect for the liner for the child's raised garden bed I made for my nephew's birthday gift. It was sturdy, malleable, and cut easily to fit.