Break tank prevents contamination

Industry Database

In 2006 the Water Regulations Advisory Scheme published guidance on making sure contamination of mains water doesn’t occur.

Now water companies are becoming tougher and implementing regulations meaning marinas need to install a break tank to prevent backflow.

Water companies carry out risk assessments on commercial sites to obtain the seriousness of the risk on individual installations and categorises them from one to five.

“Marinas used to be cat four with a non-return valve on the line. Now they need to meet category five meaning that anything water side must be through a break tank,” said Karl Sutcliffe, sales manager for Lee Sanitation.

“If the marinas don’t meet cat five, the water authorities will cut them off.

“If the water main goes too near a canal or river, if the main was to split it can create a suction and drag all the water back down the main and contaminate it.

“With a break tank, the water supply goes to a tank and the tank is then pumped onto the marina or pier.”

And he explained how the break tank is similar in principle to the cistern on a household toilet. The tank is filled until a ballcock shuts off the main when it is full providing a break between the main and the water being supplied to customers.

As such if there is a break in the waterline, only the tank will be emptied and there will be no contamination of the mains supply.

“We don’t want marinas to panic but want them to think about being ahead of the game,” said Mr Sutcliffe.

“All owners and operators of inland and coastal marinas, boatyards and slipways have a legal duty to avoid contamination of the mains water supplies.

“Tanks are sized in ratio to the water pressure required for each tap, how many taps there are.”

Another development from Lee San is the new Maxlite macerator toilet, the latest in the range of Sanimarin toilets developed to be ultra-light with straightforward installation and maintenance.

The Maxlite enables the replacement of an existing hand pump toilet with no additional drilling.    

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