We are Reflection Concrete Tanks.
We design and manufacture precast concrete water tanks built to withstand New Zealand’s toughest conditions. Proudly made in Warkworth, with over 20 years’ experience in making concrete tanks, we’re trusted by homeowners, farmers and developers who want strength, reliability and long-term water security — not plastic that degrades in the sun.
As a one-stop shop for concrete tank supply, we handle everything from choosing the right tank size through to site advice, delivery and installation guidance. We manufacture in-house, so you’re dealing directly with the people who make and stand behind your tank.
How we do it
Our tanks are steel-reinforced and precast using 70 MPa high-grade concrete, with a 65mm average wall thickness and 90mm floor thickness. Unlike plastic or fibreglass tanks, concrete doesn’t degrade under UV, doesn’t taint water, and naturally keeps stored water cooler — reducing algae growth.
We currently supply 15,000 litre and 25,000 litre tanks for residential and rural use, with commercial and multi-tank installations available on request.
Our process
Assess
Site evaluation and tank sizing
Prepare
Excavation and foundation guidance
Deliver
Crane-lift delivery and placement
Connect
Pipework connection and backfilling guidance
Support
Ongoing advice for the life of your tank
Features
Concrete not plastic
Solid pour concrete tanks with no liners or plastic parts to fail. Our tanks are designed to last decades, not years.
Made in Warkworth
Manufactured locally, with over 20 years' experience — every tank leaves our yard built to the same high standard.
No contractors, no middlemen
You deal directly with the manufacturer. We don't use dealers or sales agents, so there's one company to call for supply, technical questions, or aftercare.
Storm-proof, low maintenance
Precast concrete stays grounded in high winds and needs virtually no upkeep — no UV damage, no cracking liners, no corrosion.
Seamless landscaping
In-ground installation keeps your tank out of sight, protecting your water supply without interrupting the look of your property.
Built to spec
9.4 tonne tank weight, 70 MPa concrete strength, all measurements to +/-10mm tolerance — engineered, not approximate.
Who we work with
Clients of Reflection Wastewater Treatment Solutions include:
