Rain water Information Index

Water is the one thing that we can't live with out and in modern times its something that we just take for granted. The water companies have control on how much water you use and charge you a nice bill for it and it's becoming more and more expensive (especially if you are on a water metre). Which now the government are trying to get everyone on a water metre to take control and monitor each household on water usage. So why not come away from all this and you take control of the water you use and it won't cost you a penny. Rainwater harvesting is simple once you have your rainwater harvesting system in place and its up to you on how much rain water you want to store.

Saving your rainwater can be entirely up to you on what type of system and method you want to use.
See our Aboveground Rainwater Harvesting Tanks

The Installation Requirements

Underground Water Tank Installation

Step 1 -You need to make sure that the water tank is sitting flat and true before filling it with water. To achieve this you should dig an extra 100 - 150mm. This would be enough to lay a concrete base. Step 2 - Around the tank you should allow 150mm gap for back filling later. Step 3 - At this stage dig out your trenches for your pipe work and inline filters

Step 4 - Once the concrete has dried, lower the tank in to the hole. If your have been supplied a neck ring this should be cut to length to finish flush with the ground. Step 5 - If you find the neck ring loose, apply some silicon seal. Step 6 -To stop the water tank from rising up out of the ground when the water table rises, we recommend you backfill 450-460mm deep around the tank with concrete. Step 7- If you live in a high water table area, then you should use more concrete. If you are unsure, contact your local builder. Step 8- Once the concrete has set, backfill the remaining space with pea shingle and surround materials.

Aftercare
Most underground water tanks don’t need any aftercare straightway. If the water is
undisturbed for a period of time, it may become stagnant and start to smell. Over many
years of use the water tank may require cleaning, which can be done by using a mop.

PLEASE NOTE:
1. The tank lid is designed for
walking traffic ONLY.

2. The Neck ring must NOT finish
any lower than 500mm below
ground level.

Filter Box Installation
The filter box can be installed anywhere along the inlet pipe between the tank and the down
pipe. Ensure you can gain access to the filter for cleaning. Run your pipe work making sure
the inlet from the filter has a sight drop to ensure water flow.

NOTE: A good fall would be 25mm every 1m.
Ensure the inlet pipe from the down pipe, is fitted to the 4” connector on the filter box with
the 90° elbow on it.
- Back fill the surrounding area of the filter box with surrounding resources (Pea
shingle preferable).

1a. Ground conditions are not the same in every area should your water table rise;
your tank may rise as well. If you have a high water table then it is recommended
that you back fill more than the first strengthening ring or 450mm.