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California water storage tanks Watermark h2o

Pioneer Water Tanks

Watermark rainwater harvesting California

Water Systems for a 

Sustainable Future


Providing the best in sustainable water systems, Watermark h2o is located in Santa Cruz, California.


We arrange everything needed to safely store water with Pioneer Water Tanks, including permitting and compliance needs.


Let Watermark be your expert guide for your next water project.

Rainwater Harvesting

Watermark helps home and business owners collect, store, and use rainwater.

Fire Protection Water Storage

We provide water storage for firefighting with NFPA compliant nozzles for residential and commercial applications. We even help with permitting!

Drinking Water Storage

Keep your water supply safe from contamination, guaranteed with a warranty to back it for a lifetime of clean water.

Start with a Quote

Pioneer Water Tanks authorized dealer

Tank CodeUS GallonsDiameterHeight
XL 089,90715′ 5″7′ 2″
XL 1316,39219′ 9″7′ 2″
XL 1520,24322′ 0″7′ 2″
XL 2329,09326′ 4″7′ 2″
XL 3039,62630′ 9″7′ 2″
XL 4051,78535′ 2″7′ 2″
XL 5065,56739′ 6″7′ 2″
XL 50/0397,14839′ 6″10′ 7″

California water storage Watermark rainwater collection

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Meet Watermark H2O

Watermark rainwater harvesting California water systems

The Watermark H2O team has collectively been in the residential and commercial building industry for well over forty years. We have all seen a need in our industry and have come together to form an alliance to further build on the green sustainable building practices that are so desperately needed in our industries.

Serving coastal California with Pioneer Water Tanks from the on-site delivery to the accredited installation with a warranty included on the tank as well as the tank liner.

Let’s talk about your water needs and the sustainable solutions that would best fit in your area.


Water Resources

The Aqualiner® Advantage

The Aqualiner® is the best liner in the water tank industry, hands-down. Unlike the liners in most water tanks, the Aqualiner® is made from a reinforced fabric with a woven center layer for strength and durability.

Pioneer Water Tanks Aqualiner tank liner

Although the liner is hidden from sight and often doesn’t get noticed unless there is a problem, we feel that it is perhaps the most important part of the tank which is why only Aqualiner® membranes are used in Pioneer® tanks.

A clear polyethylene film coats both sides of the water tank liner, giving the product NSF 61 approval for the storage of drinking water. The Aqualiner® is well-known for not imparting any taste or smell in the water, so when the quality of your water is paramount, choose Aqualiner®.

Made with Zincalume® Steel with Activate ™ Technology

Only the highest quality Zincalume® and Colorbond® steel is used in Pioneer® Water Tanks, providing unmatched durability that no other tank manufacturer can offer- that’s why Pioneer® Tanks last longer than any other brand.

Next generation Zincalume® Steel’s patented Activate™ technology introduces magnesium into the aluminum-zinc alloy coating, improving galvanic protection by activating the aluminum. The result is a tougher protective coating that’s more resistant to scratches and scuffs encountered during construction. Proven to outlast galvanized tanks by 200%, according to BlueScope Steel studies, Pioneer Water Tanks are engineered to exceed. With a standard lifetime of 20 – 25 years, Pioneer Water Tanks include magnesium anodes that are buried underneath the tank to take on corrosion. When these magnesium anodes are replaced every 10 years, the protection continues as corrosion is kept away from the water supply.

Residential Pioneer Technical Specifications

Commercial Technical Specifications

WaterHarvest rainwater water tank

Pioneer Technical Specifications

Customer Referral Program

Acer Water Tanks’ Customer Referral Rewards Program is offered for every North American purchase of a Pioneer Water Tank to the original purchaser. Our Referral Rewards PIN can be found on the certificate in the warranty package mailed to you by Acer, an example can be found below.


Eligible customers may receive a referral rebate of $500 when they recommend a Pioneer® Water Tank to family and friends, and they purchase a tank using your Referral Rewards PIN.


On top of the referral rebate, we also give a $250 rebate to any referred customer that uses a registered Referral Rewards PIN with their purchase. There is no limit to the number of referral rebates that qualified customers can receive; however, there are terms and conditions*.

*Subject to the Following Terms and conditions:


In order to claim your referral rebates, both you and your referral customer must register the purchase PIN online.


Referral rebate checks will not be issued until a referral purchase has been properly registered and verified by Acer Water Tanks Inc.


Once referral purchase has been verified, please allow up to 60 days from verification for the Referral rebate check to be processed.


Earn Rebates with Referrals:


Share your PIN with as many of your friends as you like, and tell them how much you love your Pioneer tank! When your referral makes a purchase, instruct them to use the Referral Rewards PIN to claim their purchase online at rebates, both you and your referral customer must register the purchase PIN online.


Upon verification of your referral’s purchase, Acer Water Tanks will issue a Referral Reward of $500.00 to you, and your referral customer will also get a $250.00 Referral Reward.

Pioneer Fire Protection

Pioneer Water Tanks are engineered as the top choice for fire protection water tanks that follow NFPA fire requirements. Pioneer Water Tanks provide a reliable source of water will help keep your property safe and will allow firefighters to have access to a steady water source in case of emergencies. Pioneer Water Tanks have been the resource to fight fires in Australia for over 27 years and now are becoming the gold-standard in fire protection across the world. Learn More

Call Now (408) 690-7581