Who are we?
We are Control Flow Technologies Group Limited, and we are working with partners to help homes save water with our smart installations.
To make this happen or to otherwise respond to any request for information or services, we sometimes need to process your personal information. This notice explains what personal data we collect, why we need it, and how you can stay in control of your personal data.
Why we might have your information:
We may have your details because:
- You shared them with us
- We collected them from you during our work
- We received them from trusted partners like:
- Your housing provider or landlord
- Your local council
- Your water provider
What data we collect and why
We only collect what’s necessary and handle it responsibly under UK GDPR. This could include:
- Your name and address
- Contact details (phone and email)
- Email address (to enable us to contact you)
- Property details and unique identifiers
- Information about your home (type, occupancy, pets)
- Meter readings and water usage trends or habits
- Details of anyone acting on your behalf
- Any extra information from your housing provider or water company to help us work safely.
We use this information to:
- Arrange installation dates that suit you
- Plan your installation properly
- Send you a quick feedback survey after installation
- Answer any questions you might have
If you share details about disabilities or specific needs, we’ll only use them to make sure our service is safe and tailored for you.
We are committed to processing your information securely and confidentially.
The legal basis we rely on
The lawful bases we rely upon to process your information depend on what we need to use it for.
These can be:
- Contract – to deliver the service you’ve agreed to
- Legal obligations – when the law requires it
- Legitimate interests – like working with trusted contractors
- Your consent – and you can withdraw it anytime
Who we share your data with
Sometimes we need to share your data with:
- Our team and trusted service providers
- Your housing provider, water company, or local authority
- Emergency services or government bodies (if required)
- Anyone else, but only if it’s for safety, legal reasons, or you’ve agreed
How long we keep your personal data for
We will only keep your personal information for as long as necessary to fulfil the purpose we collected it for, or as required by law or contract.
To determine the appropriate retention period for personal data, we consider the amount, nature and sensitivity of the personal data, the potential risk of harm from unauthorised use or disclosure of your personal data, the purposes for which we process your personal data and whether we can achieve those purposes through other means.
Sometimes we keep anonymised data (so that it can no longer be associated with you) for research or statistical purposes, in which case we may use this information indefinitely without further notice to you.
Data security
We have put in place appropriate security measures to prevent your personal data from being accidentally lost, used or accessed in an unauthorised way, altered or disclosed. In addition, we limit access to your personal data to those employees, agents, contractors and other third parties who have a business need to know. They will only process your personal data on our instructions, and they are subject to a duty of confidentiality.
We have put in place procedures to deal with any suspected personal data breach and will notify you and any applicable regulator of a breach where we are legally required to do so.
Your legal rights
Under the UK GDPR you have the following legal rights:
- to be informed about our processing of your personal data
- to get copies of your personal data
- to correct or update your details
- to ask us to delete your data
- to limit how we can use your data
- to move your data to another provider
- to object to certain uses of your data
- to say no to automated decision making
You also have the right to make a data protection complaint to us.
Some rights apply only in certain situations, but we’ll always explain if that’s the case. For more details, visit the ICO website.
To exercise any of your information rights, please contact our Data Protection Officer, using the contact details below.
Your data is safe with us
Control Flow Technologies Group Ltd take information security seriously use strong physical, digital and operational safeguards to keep your information private.
How to contact us
By writing to:
Control Flow Technologies Group LimitedUnit 1C, Hylton Park Road
Sunderland
SR5 3HD
Or by calling
Telephone Number 0800 783 7007
Or emailing
Email: watersaving@controlflow.co.uk
How to complain
If you’re unhappy with how we handle your data, please tell us first. If you’re still not satisfied, you can contact the Information Commissioner’s Office:
By writing to
Information Commissioner’s Office,Wycliffe House,
Water Lane,
Wilmslow,
Cheshire
SK9 5AF
Or by calling
Telephone number: 0303 123 1113
Or online at
ICO Complaints – Make a complaint | ICO
Changes to the privacy policy and your duty to inform us of changes
We keep our privacy policy under regular review. This version was last updated on 20/08/2026.
It is important that the personal data we hold about you is accurate and current. Please keep us informed if your personal data changes during your relationship with us, for example a new address or email address.
Third-party links
This website may include links to third-party websites, plug-ins and applications. Clicking on those links or enabling those connections may allow third parties to collect or share data about you. We do not control these third-party websites and are not responsible for their privacy statements. When you leave our website, we encourage you to read the privacy policy of every website you visit.