Meeting New Mains Chlorination Requirements for Severn Trent Water

Severn Trent Water New Mains Chlorination Service

At Water Hygiene Solutions Ltd we are fully aware of the new mains chlorination procedure required by Severn Trent Water having worked with them for many years. Having been involved with the temporary infrastructure chlorination at the Birmingham Commonwealth Games in 2023 we also have a great reputation Severn Trent Water and never fail to get our clients the new mains connection they require.

In fact we work nationwide, providing chlorination certificates across all Water providers and Water utility companies so whenever you are across the UK we can carry out water chlorination work for you. Severn Trent state “In order to safeguard water quality and public health, it is a requirement of a customer that all private supply pipes 50mm or above are pressure tested, chlorinated and sampled before a connection is allowed to be made to the existing public water supply.

If there has been ingress such as flood water, sewage, etc, either during the laying or storage of pipework you will also need to chlorinate regardless of the diameter and length.“. Don’t run the risk of a failed Severn Trent Water connection.

Have a look at the Severn Trent Water New Mains Chlorination Requirements for new service connection chlorination.

Severn Trent Water's Commitment to Water Quality Through Chlorination

Severn Trent Water have a long history of providing clean and safe water to the residents of Birmingham, Wolverhampton, Coventry, Derby, Chesterfield, and the surrounding areas. As a key player in the water supply industry, Severn Trent Water has ensured the quality of its water and the health of its customers.

They look after 185 water treatment works and over 46,000km of water mains which they test for quality over 500,000 times every year to make sure the highest standards are met. They consistently achieve a pass rate of over 99.9%. They also employ around 1,100 continuous automatic analysers that track a wide range of parameters to make sure your water is safe and remains wholesome at all times. If you are interested then this is how they process water into clean drinking water.

In line with this commitment they have a number of new pipe work testing and chlorination requirements to ensure the purity of its water supply pipework. These requirements are essential for ensuring that the water delivered through the trunk mains, service pipes and assets meets the highest standards of quality and safety and is free from contamination.

As such, compliance with these standards is vital, not only for meeting regulatory requirements but also for obtaining a connection to the Severn Trent Water network.

What Does The Severn Trent Chlorination Procedure Entail?

New PE mains installation and chlorination requirements by Severn Trent Water encompass a range of guidelines and protocols aimed at maintaining the purity of water in service mains. If water for the commissioning and chlorination process is being drawn from the existing network through a hydrant then it is important to ensure that ONLY the correct licensed standpipe (obtained from Aquam) is used as this can otherwise lead to prosecution. Water Hygiene Solutions hold a valid Severn Trent Licensed Standpipe so you can be assured that we are fully legally compliant. The commissioning process is outlined below.

During construction any new mains installed must use fittings listed as approved in the water fittings regulations guidance.
Installed pipework requires a water regulations inspection to ensure that it is located at the correct depth underground. This can sometimes be avoided by using a Watersafe approved plumber.
Prior to connection any pipe work that is >50mm in diameter requires chlorination.
To prevent leaks after connection it is sensible that a fully data logged pressure test is performed and certification is provided showing a pass.
The mains pipe work should be swabbed and flushed to remove air and debris and to ensure full contact of disinfectant within the pipe during the chlorination phase.
The pipe is then chlorinated to disinfect it and remove bacteria and make the water safe. Severn Trent have produced a specific document detailing their chlorination requirements.
Once chlorination is complete the main is flushed to remove the excess chlorine and ensure the new mains pipe has similar chlorine levels to the supply water.
A water sample is then taken and this is provided to a specialist UKAS accredited laboratory for analysis to ensure that it is free from bacteriological contamination and has the correct chemistry requirements to meet the exacting standards expected by Severn Trent Water.

What Does a Severn Trent Chlorination Certificate Require

Thames will not pass a water mains or allow you to connect main until they have received certification. As such you’ll need a number of certificates with various details to allow connection of your new water main.

The name of the specialist contractor responsible for the chlorination
A method statement detailing the methodology for the disinfection of the main
The chlorine levels at the start and end of chlorination
The chlorine levels at the end of flushing the pipe
The turbidity of the water at the end of the flushed pipe
Confirmation that the disinfection has been performed to BS6700
Microbiological analysis certificate from a UKAS accredited laboratory for E. coli, coliforms and TVC, these usually follow around 5-7 days after the chlorination service.

Obtaining and sending the chlorination certificate separate to the UKAS microbiology certificate often leads to delays as often the water authority can find it difficult to collate all the required information.

As such we send all required documents in a single e-mail for ease of compliance. These certificates can then be submitted to Thames Water in a single shot who will then pass the commissioning and arrange the connection to site.

A Thames Water engineer must be on site to witness the connection. This is to ensure EUSR accredited professionals are completing the works.

Severn Trent Chlorination Next Steps

Contact us for advice, quotation and to book a pressure test and water main chlorination in the Severn Trent region. Alternatively fill out our chlorination quote request form and we will get back to you in a couple of working hours.

We will provide you with a water chlorination certificate, pressure test certification and UKAS accredited laboratory certificate that will ensure connection to the Severn Trent Network. We are so confident in our work that we guarantee your connection.

Do You Need a Chlorination Certificate for a Severn Trent Connection

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