Water Supply Regulations Backflow Prevention

An air gap is a vertical physical separation between the end of a water supply outlet and the flood level rim of a receiving vessel.

Water supply regulations backflow prevention.

It is intended to be used for educa tional administrative and technical reference in conduct ing cross connection control programs. Testing must be completed by a certified tester with a valid backflow prevention device tester certificate see below. 4 backflow prevention shall be provided on any supply pipe or distributing pipe a where it is necessary to prevent backflow between separately occupied premises or b where the water undertaker has given notice for the purposes of this schedule that such prevention is needed for the whole or part of any premises. On the 1st july 1999 the water supply water fittings regulations 1999 were introduced.

Cross connection backflow prevention. This manual is a revision of an earlier book entitled water supply and plumbing cross connections phs publication number 957 which was produced under the. District s responsibilities pursuant to the safe drinking water act the colorado department of public health and article 11 39 of the colorado primary drinking water regulations it is the regulatory responsibility of the. Protecting your drinking water supply is everyone s responsibility.

What is an air gap. State regulations require residential commercial and industrial customers served by a public water system to protect the public water system from potential contamination. Backflow is a term in plumbing for an unwanted flow of water in the reverse direction. New jersey regulations require a physical connection permit be obtained by the owner of a facility containing an unapproved water supply and a public community water supply permits are not required for private residences.

The following is designed to give an overview of the changes made from the water supply byelaws guide to the water supply regulations 1999 water regulations. It can be a serious health risk for the contamination of potable water supplies with foul water in the most obvious case a toilet flush cistern and its water supply must be isolated from the toilet bowl. Backflow prevention backflow is a term in plumbing for an unwanted flow of water in the reverse direction. This separation must be at least twice the diameter of the water supply outlet and never less than one inch.

A secondary type of mechanical backflow preventer is the residential dual check valve. An important consideration of the regulations is backflow prevention. Backflow can be a serious health risk if the mains water supply is comes into contact with foul stagnant or contaminated water.