237-239 Berkeley Road Unanderra, Wollongong,2526

Mobile 0413 066 524

After Hours: 02 42715917

Email: sales@coastlineplastics.com.au

Plastic Rotational Moulder/ Manufacturer

Wollongong NSW

(Dimensions & simple installation guide on bottom of page) Click on each image to view a larger image .

LARGEST RANGE OF UNDERGROUND TANK SIZES AVAILABLE now!

Reclaim your backyard and use it to it's maximum potential

We are so excited, we have not just 1 or 2 underground tanks for you to choose from but 5. Yep that's right. Five underground tanks starting from the small, compact 1,100 litres which is ideal for a small Storm Water Retention Tank (SWR also known as SRT) etc, up to 4,500 litres, 5,500 litres, 7,500 litres and the 10,000 litres tanks. Our unique design shows them as being a tough tank that will stand the test of time and what ever nature dishes out. Our underground water tanks have large ribs that add to the overall strength that many other tank companies lack.

Underground water tanks manufactured by Coastline Plastics are one of the very few underground tanks that have actually tested and comply with the Australian Standards. One of the extreme tests require that an empty tank be fully submerged in water and not fracture making sure that the tank can meet worst case scenarios. Our tanks are made of high quality virgin polyethylene which also meets the Australian Standards for contact with food and water.

Accessories

A Mains Water Kit called a Rain Maximizer is available. This deluxe version that has fittings that are water rated in a wall mounted powder coated steel control box.

First Flush Diverter 2 models available, one is suitable for installing in your down pipe, the other with the tank - your choice

Coastline Plastics Advantages

Can be positioned under driveways to engineer's detail.
Super strong - 500kg static load on top of ribbed tanks
Load bearing tank.
5 sizes to choose from
7 Year Warranty* (See Warranty page for more details)
Shallow excavation depth = cheaper installation costs
Does NOT need to installed on a concrete base
Easily installed by a handyman or a plumber in just a few hours
Shallow depth is great for rocky areas or water logged ground
extended feet to help hold down the tank.
Multiple units can be installed and connected
Local Manufacturer and fully Australian owned
30 years water tank manufacturing experience - same managing director - vast experience
Meets Australian Standards AS/NZ 1546.1, AS 4020 & AS 2070.
Quality Assurance and tested.
Made from UV stabilized food grade plastic as recommended by the Australian Standards for contact with food and water.
Tank is rotational moulded in one piece - no weak spots
Delivery covers most eastern capital cities and NSW regions
Great for harvesting, storage and recycling of rain water
Can also be used for storm water retention
Locked lid
variable connections and sizes for connections
3 tanks are within Work Cover's guidelines for working at depth
Installation instructions link to various soil types including high water tables
Installation guides prepared by independent engineer

*All installations must comply with manufacturer's recommendations and follow the engineer's details. Installations must also follow all relevant federal, state and local laws and regulations. Failure to do so will nullify manufacturers' warranty.

UNDERGROUND TANKS
Litres	Gallons	Diametre	Height
1,100	222	1060mm	1450mm
4,500	1,000	2400mm	1450mm
5,500	1,222	2400mm	1650mm
7,500	1,555	2400mm	2215mm
10,000	2,200	2400mm	2890mm

Prices: We are unable to upload prices due to the fluid nature of world oil prices (from which plastic is derived). Please contact us by email for current price and please remember to state your location.

          This is a simplified version of the installation guide. The full detailed installation guide as written up by the independent engineer is available upon tank order. Specific requirements, for example, for water logged soils etc are not covered here. This is not The guide - just a brief outline to give you an idea.

Check first your local council/shire requirements.

A first flush diverter is strongly recommended, either directly with the tank           or in the down pipe.

Check existing underground services, e.g. telephone, electricity, sewer

Check water table of your area.

Excavate square hole approximately 2780mm & to the required depth.            Avoid over excavation.

Place 100mm thick sand bedding over base, ensure level & plumb

Lift tank into place

Backfill in stages with dry sand & cement to cover the crown of the tank

Complete all plumbing & accessories

Ensure down pipes and diverters are properly fitted

Finish surface treatment as desired.

Though Coastline Plastics Underground Water Tanks are certified to be load bearing of 500kg static   load, it is recommended that tanks installed below driveways and garage floors etc

should be installed 100mm lower than height of tank.

The cast reinforced concrete slab should not bear on the tank

Cast insitu a Rocla CPO storm water cover.

Lifting: The simplest means of lifting and handling the tanks is to install a 100 x 100mm hardwood F27 grade timber section inside the tank access opening and positioned horizontally up against the flat soffit and slung from a crane. Another option is the use of slings.

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