Welcome to StreamLine, the regulatory advice service for innovators and businesses in England and Wales. StreamLine is run jointly by the Drinking Water Inspectorate, the Environment Agency and Ofwat to support innovation.
We provide advice to help innovators and businesses understand and navigate through water sector regulations.
We do not provide advice on activities such as environment permits, planning and substances in contact with drinking water (Regulation 31), which are charged for. Read our Frequently Asked Questions (FAQs) on where you can go for this advice.
Use StreamLine: send us your questions
Use the button below to access the StreamLine Portal, which is hosted outside of the Ofwat website. The form on the portal can be used to send us your questions and requests for advice.