Haslett, who has been at the company for almost 40 years, said his decision to step down was based mainly on personal reasons.

Haslett said: “When I took over as acting CEO and was then appointed on a fixed term contract, I set a number of priorities which I believe have been achieved with the help and hard work of all of the staff in NI Water.

“Their support has been overwhelming and humbling. I knew I had made the right decision from the first day I took up office. We have come a long way, but alas, I have to get off at the next stop and let that journey continue.”

NI Water chairman Séan Hogan added: “I am grateful that Trevor has indicated that he intends to make a full contribution in post until a suitable replacement CEO is found.

“That selection process had already commenced with the appointment of search consultants and it is likely that the post will be advertised early next month.”

Conor McGlone

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