The water utility network in Leeds is Yorkshire Water, which is one of the UK’s largest water companies.
Mains Chlorination Ltd is a nationwide water chlorination service provider with engineers situated across the UK including Leeds. We work with all nationwide water utility companies, therefore if you have jobs in several cities we can conduct the water chlorination for each job.
Leeds Water Chlorinations
There are 12 million litres of water consumed each day in Leeds city centre alone. Yorkshire Water is leading pioneering work with their “open data approach” to water consumption. In what is believed to be a first in the water industry. This will enable the water company to work closely with the growing Yorkshire community of digital developers to help find new and innovative solutions to pollution and leakage problems.
Yorkshire Water’s Chlorination and Sampling Requirements
The Principles of Water Supply Hygiene state the following:
‘Where distribution networks are designed and installed by self-lay organisations (SLPs) water undertakers should ensure that these activities are carried out in accordance with the Code of Practice for the self-laying of water mains and services and relevant British Standards. SLPs should be members of the Water Industry Registration Scheme operated by Lloyds on behalf of Water UK and the Water Industry’.
Yorkshire Water’s New Mains, Service Connections and Service Pipes > 63mm OD and > 6m in length Requirements
After installation and before use, water mains must be flushed until visibly clear. They must be disinfected by charging with water containing sufficient free chlorine to ensure that a concentration of at least 20 mg/l has been maintained throughout the entire pipe length over a period of standing for at least 16 hours. The time is important to ensure adequate dispersion and contact of the chlorine with the water and the entire internal surface of the
main and fittings. The main must then be flushed and left charged for a minimum of 16 hours, and sampled at appropriate points, including the downstream end. The number and location of samples required must be sufficient to ensure the suitability for the supply of the entire length of main.
• Alternative disinfection methods can be considered that are equivalent to 20 mg/l for 16 hours (for example, spraying the full internal length with solution containing 1000 mg/l chlorine).
• No New Main, Service Connection or Service Pipe shall be brought into service until the contents of the main have been tested successfully for bacteriological, chemical, taste, odour and appearance. The SLP or Developer should ensure that the appropriate samples are taken and analysed in a suitable UKAS accredited analytical laboratory.
Chlorination certificates and certificates of analysis from the UKAS accredited laboratory should
be emailed to: PWINFO@yorkshirewater.co.uk
The chlorination certificates and certificates of analysis must be assessed by Yorkshire Water’s
Information and Regulation Team. No New Main, shall be connected to the Yorkshire Water
Network until approval has been granted by the Information and Regulation Team.
Yorkshire Water Drinking Water Standards
Yorkshire Water is committed to making sure their water is clean and safe to drink, they deem this their “number one priority”. They follow these steps;
- Ensuring no new water pipes are connected to the main service until a mains chlorination is completed and the lab results come back clear. This is a legal requirement
- Testing water supply
- Water conservation
- Improving water supply
- Replacing water pipes
- Cleaning water pipes
- Relining existing water pipes
- Refurbishing old lead pipes. Yorkshire Water will refurbishment or replace the water pipe within their section free of charge.
Find out more about keeping water safe in Yorkshire – click here.
Flushing and Disinfection with Yorkshire Water
Here are the guidelines supplied by Yorkshire Water in relation to Flushing and Disihfection.
- Small fittings for service pipes such as ferrules, stop taps and connectors should be immersed in a solution containing the equivalent of 1000mg/l of chlorine, contained in a suitable receptacle for a minimum of 2 minutes immediately prior to their use. The solution shall only be used for up to24 hours after mixing or until it becomes exhausted or contaminated.
- All service pipes shall be thoroughly flushed with potable mains water prior to them being
connected to the Customer’s supply. This will ensure that the whole length of the service pipe
has any air or contamination removed. - If there is any likelihood that the inside surface of the pipe has become contaminated, then the
pipe shall be discarded. - Following the installation or repair of a Service Pipe the Contractor shall ensure that the whole
length of the service pipe is thoroughly flushed until all air or contamination has been removed
and the chlorine concentration has reached normal background levels. - After the Developer has laid the communication pipe and connected the pipe together, each pipe shall be tested to ascertain the correct plot number / property served.
Commissioning with Yorkshire Water
Yorkshire Water is responsible for the final connection and commissioning of the mains to the existing off-site network. This is why it is imperative you work with a Mains Chlorination contractor who can deliver an instant chlorination certificate and UKAS laboratory for testing. Failure to act quickly can delay connection.
Chlorination Certificate Leeds
Why choose Mains Chlorination for your water chlorination today;
We have worked with all water utility networks for over ten years and we have completed thousands of water chlorinations for public and private sector organisations. We pride ourselves on our in-house engineers’ expertise and professionalism to deliver successful water chlorinations.
If you choose to work with us you can expect:
- Quick turnaround – you can book online for a date and time that works for you or get an instant online quote
- Guaranteed water mains connection to BS8558 standards
- Instant chlorination certificate issued on-site – same day certification
- Microbiological testing through our UKAS -accredited laboratory
- Approved Data-logged pressure testing available
- Energy & Utility Skills Register (EUSR): 538254
Contact us today to discuss your job or request an instant online quote. You can also book online for a time and date that works for you.