COVID-19 (Coronavirus) – A Message to Our Customers

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Updated: 09:00 04 January 2021

We know that this continues to be a difficult and challenging time for customers. We also know that the water and wastewater services we provide play a key role in protecting public health and safeguarding the communities we serve.

As we have done throughout the pandemic, we are doing all we can to protect our colleagues while also maintaining our services to customers. You will continue to see us working in streets and communities during this time but we are only doing essential work that will help protect public health by maintaining our key water and wastewater services to customers. We will not be doing any work which would require us to enter properties unless it is an emergency.

Our Billing Call Centre remains open from 8am - 6pm (Monday to Friday) and is available to support our most vulnerable customers who have been impacted by the coronavirus.

If you’re impacted by the coronavirus and concerned about your water bill, please click here for more information.

Remember, you can update your account, tell us you are moving and set up a direct debit by visiting our online services.

We will keep you informed of any other changes through updates on this site and via our social media channels - Facebook & Twitter.

We will to do everything we can to continue providing our essential services and we thank you for your support.

Misconnected sewers


Plumbing and drainage misconnections pollute rivers and beaches throughout the UK. Check your property is connected right. If wastewater or sewage is connected to a surface water drain you may be polluting your local river or beach.

As a property owner you're responsible for fixing a misconnection. Contact Dŵr Cymru, your local authority or a WaterSafe plumber.

If you suspect you have a misconnected property or have noticed a pollution incident taking place, please contact us on (0800 0853968) or pollutionrisk@dwrcymru.com

The ConnectRight campaign aims to:

Prevent misconnections and raise awareness about drainage and water pollution amongst property owners, the public and professionals. It brings together partners who are working to reduce water pollution - environmental regulators, water companies, local authorities and other professional and interested organisations.

Connect Right


Misconnections matter – the facts

1. Two types of drainage system exist:

  • combined where all flows go to foul sewer and are treated at a sewage works
  • separate where clean rainfall drains directly to river, sea or ground, and foul sewage drains to a sewage treatment plant 

2. Two types of misconnection exist

  • sewage or waste water are connected to clean surface water drains
  • clean water is connected to foul drains

Our concern is mostly with the former:

3. Misconnections cause pollution. Foul discharges to clean water drains result in untreated sewage going directly to a watercourse. But clean rainfall to foul is also a problem as it causes sewerage overflows, takes up sewer capacity, affects sewage treatment plants and takes energy to pump and treat.

4. Almost all urban streams are affected to some extent. It is estimated that 15% of our rivers and 9% (that’s 49 beaches) are failing water quality standards due to misconnections and sewer related pollution.

5. Sewage pollution has five main polluting effects:

  • nutrients, especially Phosphorus, cause excessive plant growth and then lead to oxygen depletion with die back; they alter the natural ecology and kill fish and other wildlife
  • pathogens are a health risk and may affect shellfisheries
  • organic matter when digested by bacteria and other microbes results in oxygen levels being depleted killing fish and other wildlife
  • toxins – increasing evidence shows that chemicals like Nonylphenols, washed out of imported clothing, and Tryclosan, an anti bacterial agent in hand washes, toothpaste and many other products are affecting watercourses. The long term effect of these substances on wildlife is not yet clearly understood.
  • aesthetic impacts – sewage derived debris and ‘solids’

6. Half of UK homes are on separate sewers. The exact number with misconnections is difficult to estimate due to the complexity of the housing stock. The UK Water Industry report suggests around 140,000 properties but in some areas investigations have found up to 1 in 5 properties misconnected. The real UK total could be more than 500,000.

7. Property conversions, the DIY culture, ignorance of sewers amongst the public and building trade all add to the problem. The most common misconnections are washing machines (35%), sinks (10-15%), dishwashers (10-15%), toilets (5%), whole houses (5%).

8. Water companies, Natural Resources Wales and the Environment Agency, with support from local authorities, are working to address the problem locally and nationally. Costs of investigation are high. Water companies are spending more and more finding misconnections in sewer networks; current estimates to investigate and find all misconnections put the figure at as much as £450 million and to correct the drainage £42 million.

9. The connectright.org.uk website has a facility for checking for misconnections and more information on misconnections and sewer related pollution.

10. ‘UK PLC’ has to comply with meeting water quality standards under certain European Directives. We can all play our part in protecting our local environment.