Tri-City Vinyl In-Ground Pool Liners

Offer your customers more choices. Tri-City Vinyl pool liners feature vibrant colors and exclusive patterns that maintain their aesthetic appeal for years to come.

Download our brochure.

All patterns come in a .020 or .027 mil thickness unless otherwise specified. Please note that there will be visible seams on every liner. Some seams may be more visible on certain patterns.

Note: These are new patterns for 2023 colors, please contact us for availability.

Amelia Border with Oyster Bay Bottom

Argos Border with Lakeshore Bottom

Bayview Border with Diffusion Bottom

Carnegie Border with Ocean Bottom

Carolina Border with Ocean Bottom

Carrara Marble

Grand Border with Beachstone Bottom

Greystone Border with River Bottom

Hamlin Border with Pebble Bottom

Island Wave Border with Caribbean Bottom

Panama Border with Caribbean Bottom

Pearl Border with Seabed Bottom

Raleigh Border with Beachstone Bottom

Seaburst Border with Oyster Bay Bottom

Sedona Border with Lakeshore Bottom

Siesta Wave Border with Diffusion Bottom

Sistine Border with Pebble Bottom

Summer Border with River Bottom

Tri-City Vinyl Pond Liners

Tri-City Vinyl stocks high-quality pond and aqua-culture liners. Formulated using the highest quality raw materials available, these vinyl liners are perfect for ponds, fisheries, decorative and recreational fishponds or other landscaping applications. Gray liners are available in .030 mil thickness.

  • Precisely fabricated to your specifications.
  • Eliminate trouble some folds which help breed bacteria and other water-born fungus.
  • Uses a puncture-resistant "drop in" instead of flat sheets.
  • Formulated and tested to deliver exceptional breaking and elongation strengths.
  • Pliable and easy to install.
  • Flexible to reduce wrinkles.
  • Can be installed in a wide variety of climates and temperatures.
  • Do not contain or release chemicals that are harmful to humans or fish.

Adding New Fish To A Pond

All new ponds must go through a nitrification cycle before they are stocked. Koi fish may not survive in a pond that lacks sufficient levels of nitrifying bacteria.

A nitrification cycle should begin with only 2 Koi fish for a 1,200 gallon pond or 4 Koi fish for a 2,000 gallon pond. The process occurs when the pond water contains enough nitrifying bacteria to counteract organic waste and other bacteria found in fish ponds.

The appropriate number of Koi should be introduced into the pond at the same time. Additional livestock may be added to the pond 4 to 6 weeks from the start of the first nitrification cycle.

Pond liners are manufactured in five business days!

Frequently Asked Questions

We are excited to announce the purchase of a new automated cutting machine with the latest technology in the industry. It is an Eastman Eagle C125. It will allow us to be even more precise in cutting liners, giving you the quality you have known to expect with Tri-City Vinyl liners.

We have also invested in PoolWorks Design Suite, the latest in design software. This will help ensure we are fabricating the best fit possible for our customers.


Size Shape Gallons of Water
12' x 24' Rectangle 8,640
16'x 32' Rectangle 19,200
16'x 36' Rectangle 21,600
18'x 36' Rectangle 24,300
20'x 40' Rectangle 30,000
16'x 32' Oval 17,150
18'x 36' Oval 21,700
20'x 40' Oval 26,800
17'x 33' Grecian 19,650
17'x 37' Grecian 22,185
20'x 36' Grecian 24,300
20'x 44' Grecian 30,300
16'x 30' Kidney 14,900
16'x 34' Kidney 16,500
20'x 38' Kidney 20,178

Tri-City Vinyl's production time is usually one week, plus shipping time.

Any established pool company can order pool liners through Tri-City Vinyl. Reach out to us to learn more!

Tri-City Vinyl introduces new pool liner designs every year; many of the popular designs continue to be manufactured, with additional unique and fresh designs being produced on a yearly basis.

Whatever shape your pool is, TCV can produce a pool liner to fit it!

TCV offers warranties for both in-ground and above-ground pool liners.

The difference is mainly the thickness in the liner. Both .020 and .027 mil liners carry the same warranty. A .027 mil liner will handle more physical abuse than a .020 mil liner. This is the main reason people choose a .027 mil liner over a .020 mil liner. Keep in mind that the .027 mil liner is more expensive and the potential for fading from chemical abuse is the same as a .020 mil liner.

Tri-City Vinyl also manufactures FDA food processing vinyl liners, FDA cistern liners, and pond liners in black (20 mil), gray and blue (30 mil).


You may have a low sanitizer level in your pool. You need to "shock" the water by brushing the pool walls and running the pool filter for a 24-hour period of time in order to increase the distribution of the sanitizer. Lastly, add an algaecide to the pool water to kill any existing algae and future algae development.

Discolored Water

If your pool water is green or blue-green in color, you may have high levels of pH. If the pool water is brown to red in color, you may have an overall water imbalance.

For green or blue-green water: Test the pH level of the pool water and make the appropriate adjustments.

For brown to red water: Test the pH, calcium hardness, and total alkalinity levels, and if necessary, drain all or part of the pool water and refill with fresh water.

Cloudy Water

There are numerous reasons your pool water may be cloudy: High pH levels; high total alkalinity levels; high calcium hardness levels; high TDS levels; low sanitizer levels; algae growth; pets going into the pool; or high swimmer load.

You should test all your chemical levels and make the appropriate adjustments.


Your pool water may have low pH levels or low total alkalinity levels. Test both the pH levels and total alkalinity levels, and then make the appropriate adjustments. You should also contact a professional service technician or local pool supply store for additional information.

Your total alkalinity levels are high, so perform a total alkalinity levels test and make the appropriate adjustments.

More than likely your pool water has high pH levels and total alkalinity levels. Test the pH levels and total alkalinity levels, and then make the appropriate adjustments.


Scales may be caused by the following: High pH levels; high total alkalinity levels; high calcium hardness levels; or high TDS levels.

You need to test the pH and total alkalinity levels and make the appropriate adjustments. If necessary, you should contact a pool professional and have them drain the pool, then scrub down the walls and refill the pool with fresh water.


You may have low pH or total alkalinity levels or high TDS levels. Test the pH and total alkalinity levels, making the appropriate adjustments. Then if necessary, contact a pool professional and have them drain the pool, scrub down the walls, and refill the pool with fresh water. You may also want to contact a professional service technician or a pool retailer for additional information.

You may have low or high pH levels; low or high total alkalinity levels; or low sanitizer levels. Test both the pH and total alkalinity levels, making the appropriate adjustments. Plus, test the sanitizer levels and if necessary, shock the pool water.

The pH level provides you with a reading of how acidic or basic your pool water is. Monitoring the pH levels of your pool water will help you to determine possible problems that may occur with high pH readings and low pH readings.

The ideal pH range for pool water is between 7.4-7.6. Any reading below 7.4 means your water is acidic.

To correct this problem, you should add soda ash or sodium bicarbonate, two substances found at your local pool supply store.

If the pH level is above 7.6, it means the water is basic or alkaline. You will need to add some liquid Muriatic acid to the pool water, which can be purchased at a local pool supply store.

Always remember: Before adding any chemicals to your pool water in order to adjust your pH levels, you must first consider the total alkalinity levels.

Common problems with pH levels:

  • High pH levels Low pH levels
  • Scales pool surfaces and equipment Corrodes surfaces and equipment
  • Contributes to cloudy water Wrinkles and fades vinyl liner
  • Drops efficiency of chlorine Increases chlorine consumption
  • Irritates swimmers' skin/eyes Irritates swimmers' skin/eyes

Total alkalinity is a measure of the pool water's ability to neutralize acid (water's buffering capacity) and keep your pH level within the proper range.

Remember: Total alkalinity affects your pool's pH levels and so you must be tested before you perform any pH testing and adjustments.

You want the total alkalinity levels for your pool to range from 80-140 ppm.

Common problems with total alkalinity levels:

  • High total alkalinity levels
  • Low total alkalinity levels
  • Poor sanitizer efficiency
  • Skin and eye irritation
  • Scale formation
  • Hard to change pH
  • Cloudy water
  • Stained, etched or dissolved plaster
  • Skin and eye irritation
  • Rapid changes in pH or "pH bounce"
  • Corroded metals/equipment

Water hardness is the concentration of calcium and magnesium in your pool water.

Depending on your water source, the hardness in your water varies. For instance, well water has a higher mineral content and therefore is “harder” versus fresh water that has gone through a treatment plant.

Regardless, you do want your pool water to have some level of hardness. Too soft of water will slowly dissolve the plaster and any metal in your pool, while too much water hardness will cause scale formation on the walls and the pool water will look cloudy.

TDS includes everything dissolved in your pool water --- from metals to chlorine---to sulfates, alkalinity, and salts.

You want your TDS range to be between 1,000-2,000 ppm.

If your pool experiences a TDS problem, the pool water may taste salty or it may have a slight tint to it (but no clouding) or see algae growth and get false test readings.

If you are worried that your pool has a TDS problem, contact a professional service technician for assistance or take a water sample to your pool supply store's water lab for more tests.

Chlorine 1.0-3.0 ppm

Bromine 2.0-4.0 ppm

pH 7.4-7.6

Total Alkalinity 80-140 ppm

Calcium Hardness 200-400 ppm

TDS 1,000-2,000 ppm

Contact Us

Tri City -Vinyl is proud to sell our liners throughout the U.S through a network of high-quality pool liner dealers. Call or e-mail us to locate a dealer near you! Dealers can also download the order form and fax it to us

640 East Morley Drive, Saginaw, MI 48601

989-754-5499 -- or -- 800-334-9949

989-754-1991 (fax)

[email protected]

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