Underground Water Tanks
Mullaly underground water storage tanks are made from fibreglass (FRP) with integral ribs for strength. They are rust and corrosion proof and need no ongoing maintenance.
Mullaly underground water storage tanks have a unique, integral fibreglass rib design that gives them their strength. They are made in Australia from high quality fibreglass, and they are rust and corrosion proof and maintenance free.
Our underground water tanks hold water and wastewater for councils, utilities, commercial and industrial sites, and remote projects. Mullaly FRP emergency storage tanks are covered by the same WSAA product appraisal (PA 1020 Issue 4, current to 2031) as our sewage pump stations.
Mullaly water storage tank features
Customisable and flexible designs
- Single-wall and double-wall water storage tanks
- Single tank sizes from 5,000L, up to 150,000L for some applications
- Diameters up to 3.28m
- Designed for underground and select above-ground installations
- Accessories to suit a wide range of applications
Easy to ship, install and maintain
- Lightweight, so easy and cost-effective to ship
- Made in Australia by Mullaly
- A large-capacity tank can ship on one truck bed
- Easy to install in remote locations
- Easy to install in tight footprints
High quality fibreglass (FRP)
- Corrosion resistant to the surrounding soil
- Corrosion resistant to stored liquids
- Premium resin with no fillers
- No protective lining or coating needed
- Designed to be 100% watertight
- No ongoing maintenance or inspections required
Structural strength
The strength of a Mullaly underground tank comes from its integral, high-profile fibreglass ribs, which are part of the tank wall rather than added on.
- Not limited by the water table
- Integral, high-profile fibreglass ribs increase strength
- Ribs designed for the soil and surface loads on each site
- Lightweight for its size, so a large tank can still be shipped and installed in remote places and tight footprints
Water storage tank photos
Accessories
Tanks are fitted to suit the application, with access risers, manways, inspection ports, FRP inspection ladders, baffles, and inlet, outlet, overflow and vent points.
For factory wash-down, fire protection water and stormwater detention, see our industrial water tanks. To pump into or out of a tank, see our fibreglass pump stations. Where runoff carries fuel or oil, see our Aquator oil water separators.
Tank projects
Sydney International Airport Pier B
A wet well, valve pit and macerator combo with two 85kL overflow tanks, under a parked Airbus A380.
2020 · Townsville, QLDNorth Queensland Stadium
A 3m diameter, 6.2m deep wet well and valve pit combo, supplied fully fitted out for a busy stadium site.
Download the water storage tank brochure
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Request a quote
Tell us the volume, the site conditions and how the water will be used, and our team will recommend the right tank.
Or call 02 4964 8270 or email [email protected]