Ms Margaret Attridge:

We are aware that a number of those incidents relate to operational practices. We are taking action there with regards to training all our wastewater treatment plant operators, rolling out standard operating procedures around the specific elements of plant, having standard procedures and equipment in place on each side for operational testing and having sludge removal programmes in place for all our sites. We are keeping our sites as healthy as possible. We are taking action there as soon as possible to reduce the number of those incidents.