Incorporated Engineer (IEng)
Becoming an Incorporated Engineer allows you to use the post-nominal letters “IEng” after your name, highlighting your level of knowledge and expertise to your employers, colleagues, and customers.

Incorporated Engineer (IEng)
Incorporated Engineers (IEng) apply and manage current and emerging technologies across design, development, construction, and operation. They demonstrate:
- Problem-solving expertise using established analytical techniques.
- Practical knowledge to deliver projects and services with proven methods.
- Leadership skills in project, financial planning, and team development.
- Strong communication for technical matters.
- Commitment to professional engineering values.
If this aligns with your experience, earn the recognition you deserve with the IEng title. Start your application today and join a network of registered engineers!

“The Institute were fantastic in helping me through the application process and I got great support from my sponsors and colleagues with my report and interview preparation. In gaining my IEng I have a renewed confidence and proven to myself and peers that I am capable of this and more and it has already opened up new challenges to progress my career”.
Wayne Potter IEng, Wastewater Network Modeller, Mott MacDonald

Who can become an IEng?
The IEng title is available to anyone who meets the required professional competencies and commitment outlined in the UK-SPEC standard, typically achieved through a combination of education and work experience.
How to become an IEng
Before starting your application, please read the UK Spec authored by the Engineering Council that explains the competence standards required of an IEng.
Once you are ready to begin your application, download the IEng Application Form and the Applicant’s Short Guide and follow the process outlined in the guide.
All candidates for registration as an Incorporated Engineer must be members of a professional body such as IWater. As part of your application, you will be asked to produce a copy of your CPD record.
IEng Fees
Professional Review Fee for Incorporated Engineer (IEng) £168
Initial Registration Fee (remitted to the Engineering Council and will cover registration until your next membership renewal date) for Incorporated Engineer (IEng) £52.52
Annual Renewal Fees (remitted annually to the Engineering Council to maintain the Registration) for Incorporated Engineer (IEng) £40.60


International Engineering Registration
Provided they have the necessary qualifications and experience, UK IEngs can apply for International Engineering Technologist (IntET), aimed at making it easier for holders to practice their profession overseas.
The Engineering Council is responsible for maintaining the UK section of the IntPE Register, and anyone wishing to register can download an Application Form.
All applicants should read the Guidance Notes before completing the application form. For guidance and advice on International Registration please email registration@instituteofwater.org.uk
Professional Registration FAQs
We’re here to support your application, so please call us at 0191 422 0088 or email registration@instituteofwater.org.uk if you have any questions about your application and our dedicated Professional Standards Manager will be happy to help you.
All applicants for professional registration must be members of a professional body such as IWater. To find out more about IWater membership, click here
Before applying, you should consider the standards required for registration, and discuss these with your employer or you can contact us. Please refer to the latest edition of standards listed on the dedicated Engineering, Environment, and Science pages.
You will also need:
- An up to date CV
- A job description of current role
- Sponsor certified competency evidence
- Signed copies of relevant academic/training certificates
All applicants for professional registration must be members of a professional body such as the Institute of Water. Click here to find out more about Institute of Water membership.
Before applying, you should consider the standards required for registration, and discuss these with your employer or you can contact us. Please refer to the latest edition of standards listed on the dedicated professional registration pages.
Once you are ready to apply, please download our application guides and our application forms on the dedicated pages.
As part of your application you will be asked to produce a copy of your CPD record. Through IWater, members have access to a user-friendly CPD platform, click here to find out more.
Professional registration wasn’t built overnight (unfortunately!) and there will be a period of time where you are waiting to hear back after submitting your application.
Please be aware that the process can take up to three months. We are fully committed to keeping you informed with any updates or communication from assessors regarding your application.
You may not know which professional registration award fits your current work and experience, which is why we are here to advise you.
Each professional registration award requires you to demonstrate that you have met a variety of competencies and have a certain level of responsibility through your workplace experience.
You can find videos, testimonials and further information on the different professional registration awards here on our website. To be advised personally on which professional registration award is right for you, please contact us.
You can find videos, testimonials and further information on IWater professional registration right here on our website.
You will also be supported in applying for your professional registration, and we can advise you as to which professional registration award is right for you.
There are three separate fees involved in obtaining and retaining professional registration. Which are:
- Review Fee for your specific professional registration
- Initial Registration Fee
- Annual Renewal Fee
More information can be found on each dedicated professional registration or by contacting us. Please note that failure to pay fees can result in the removal of your professional registration.