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Lifeguard 30 ft. x 50 ft. EPDM Pond Liner – 45-Mil Rubber Liner for Outdoor Ponds, Waterfalls, Aquaponics, Retention Basins – Durable & Fish Safe

  • Based on 690 reviews
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Availability: In Stock.
Fulfilled by Amazing Pond Supplies

Arrives Aug 11 – Aug 14
Order within 11 hours and 7 minutes
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Material Type: 30' Width


Style: 50' Length


Features

  • 45-mil EPDM Rubber Liner - Durable, flexible, UV and puncture resistant, fish and wildlife safe for koi ponds, water gardens, and aquaponics systems.
  • No Plasticizers Wont Crack or Split Unlike vinyl liners, EPDM stays flexible year-round without becoming brittle over time.
  • Easy to Install & Shape Lays flat and conforms easily to curves, shelves, and other pond featuresperfect for DIY installations.
  • Certified Fish & Wildlife Safe Backed by Certified by Guardian Systems Inc. and safe for koi, turtles, and aquatic life. Ships via freight truck (lift-gate not included); ensure accurate contact details for scheduling delivery.

Description

Pond Liner is the foundation for any Koi pond, water garden, or waterfall. From residential backyard ponds to commercial water features. 45-Mil EPDM LifeGuard Pond Liner is the preferred choice of professional installers Because its is flexible , puncture resistant and will last at least 25 years! LifeGuard EPDM is an elastomeric compound (rubber) that is manufactured from ethylene, propylene, and a small amount of diene monomer. These ingredients are synthesized to produce a product that exhibits a high degree of ozone, ultraviolet, weathering and abrasion resistance, and outstanding low temperature flexibility. These ingredients also contribute to resistance to acids, alkalis, and oxygenated solvents (i.e. ketones, esters, and alcohols). Don't Be fooled by Chinese companies marketing Plastic as EPDM! The Best EPDM RUBBER LINERS ARE MADE IN THE USA Features and Technical Specs: The formula for sizing a pond liner is: (Pond Length') + (2 x Pond Depth') + (2') = Liner Length' (Pond Width') + (2 x Pond Depth') + (2') = Liner Width' So... if you want a finished pond that is 12' long, 7' wide, and 3' deep; then using the formula above, the liner size you need is: (12') + (2 x 3') + (2') = 20' Long (7') + (2 x 3') + (2') = 15' Wide This basic formula will work for ALL pond shapes. Fish Safe EPDM LifeGuard Pond Liner is Certified Fish & Wildlife Safe by Guardian Systems, Inc. Natural and beutiful Water Gardens are great habitat for plants and fish. Just add water and your yard will come to life! Easy to Shape and Fold EPDM Liners Are strong and Flexible so they make waterfalls like these easy to build. Easy to work with LifeGuard EPDM Rubber liner is easy to seam, attach to filters & repair, unlike Plastic PVC & LLDPE Professional Builds Use extra Pond Liner or Underlayment as padding for boulders LifeGuard Pond Liners We Box Liners from 5' x 5' through 30' X 30' Large Liners are folded and put on cardboard cores for easy dispensing and shipping Liner cores Range in size from 5 feet wide to 12.5 feet wide. 45 Mil EPDM 45 Mil & Underlayment 60 Mil EPDM 60 Mil & Underlayment Underguard Underlayment

Product Dimensions: 40 x 48 x 6 inches


Item Weight: 450 pounds


Item model number: LG30X50-45


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Aug 11 – Aug 14

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Thick, flexible, nice and heavy.
Material Type: 20' Width Style: 25' Length
It is very heavy, nice and pliable, and needs a few people to drag it into place. It is so much nicer and more flexible than the last liner we had. Very nice. Thick, heavy and so far no leaks.
Reviewed in the United States on July 1, 2026 by Michelle H.

  • Great product; No issues!
Material Type: 40' Width Style: 90' Length
1000 lbs of EPDM liner (1 piece, 90' x 40') arrived on a pallet just in time. Delivery coordination and communication was great and no issues there. I laid used carpet under the liner to protect it from possible roots etc. I wish I had a few more people to help. It was not an easy task for 6 of us to get this done. We had to work smarter as this is a really heavy liner but managed to get the job done in approx 1hr. Only a few things left to do like booting a couple pipes and then laying the larger rocks down on the shelf. The liner however is perfect, no rips or holes that I can see, very strong and also flexible. I'm not a pond pro so I've never worked with EPDM before but I'm impressed. Amazon had the best $ price for this particular size and free delivery. Could not find any local shop to beat Amazon, so thank you Amazon!! ... show more
Reviewed in the United States on October 3, 2024 by Sergiu

  • High quality
Material Type: 40' Width Style: 35' Length
Very thick liner but flexible and easy to work with.
Reviewed in the United States on May 8, 2026 by Great book! We all enjoyed reading the story about Wally.

  • Watch out for spiders
Material Type: 15' Width Style: 20' Length
When I opened the box there was a spider in the box. It did not run out of the box, but into the liner. In general, my wife and I don't eradicate spiders (I should have). Two days after installing the liner I noticed a bump on my back. It kind of looked like poison ivy (oozing), but the middle of the back is kind of a weird spot for poison ivy. A day later, fever and chills, plus muscle aches started. I went to the ER when I saw this black spot on my back (see attached picture). They said it was a spider bite. I don't know for a 100% that it was that spider, but checking pictures now it did look like a brown recluse. The timing seems to match from when I saw this spider. The initial charge from the ER $130, it will be a while before I see billing from the doctors and testing...we'll see what Medicare covers. I'm guessing it will be Thousands of dollars. A little pond project could turn into a big expense. The liner itself is of good quality. ... show more
Reviewed in the United States on June 15, 2026 by Michael Foos

  • If you want it to last, the 45mm is the way to go
Material Type: 20' Width Style: 20' Length
My last 45mm liner lasted a long time, I'm sure this one will too, it's a little on the heavy side installing it , but it lasts alot longer than the cheaper ones.
Reviewed in the United States on May 20, 2026 by Jerry W.

  • Great for under-deck water protection, too
Material Type: 10' Width Style: 10' Length
I got this to use as water protection from my deck, that is, to keep it dry underneath. This stuff is as thick as a tire inner tube and it's real rubber. It does a great job. Saved hundreds over the name brand projects that's meant to do this job, and it's better stuff. You have to install at a certain way so make sure you check for YouTube videos about how to do that if you want to use it for this purpose. ... show more
Reviewed in the United States on November 2, 2025 by FastAl

  • Delivery was quick!
Material Type: 20' Width Style: 20' Length
Received product within two days of ordering. Very very heavy! Very happy with it so far! LH
Reviewed in the United States on June 27, 2026 by Amazon Customer

  • On time
Material Type: 15' Width Style: 25' Length
Looks good
Reviewed in the United States on July 3, 2026 by Thomas Evans

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