1. What measures is the Welsh Government taking to improve inland water quality in Wales? OQ57333

Investment, legislative drivers and a robust regulatory framework has led to 42 per cent of our inland waters achieving good ecological status. We are committed to improving water quality but we cannot do this alone. We need to take an integrated catchment approach, focusing on multisector co-operation and nature-based solutions.

Diolch yn fawr, Weinidog, and good afternoon. I'm sure you'll join me in welcoming the recent improvements that were adopted in the UK Environment Bill to improve inland water quality in England, in particular the legal duty that is placed on water companies to progressively reduce the impact of permitted and non-permitted discharges from combined sewage overflows, known more commonly as CSOs. Had I been fortunate enough to have been drawn in the Member's legislative proposal ballot, I was intending to bring forward an inland waterways Bill—a draft piece of legislation that strives for cleaner rivers, seas and lakes here in Wales. With that in mind, what action is the Welsh Government taking to place a duty on water companies to take all reasonable steps to ensure that sewage is not being discharged into our streams and rivers and to also increase the number of Welsh inland bathing waters classified as 'good' or 'excellent'?

Well, I think there are a couple of misconceptions there. The first is confusing England for Wales, which is a very common problem on the benches opposite. The UK Government has legislated to set targets for water companies in England to reduce sewage discharges and water quality. The assumption and the widespread perception on the opposite benches that that's the main cause of poor water quality in Wales is just not borne out by the evidence. 

We've done a series of pieces of work, including the phosphates compliance assessments, which I notice the Member opposed and, indeed, accused Plaid Cymru of betraying Welsh farmers by dropping their opposition to them. So, his sudden interest in inland water quality is quite an interesting one. I think he would be better off having a seriously good look at what we are doing to improve the entire catchment area water quality to make sure that we understand the causes of the pollution and that we are able to stop them at source rather than making the kind of generalised remarks that are very unhelpful.

One of the major problems regarding inland water quality is discharge into rivers, which then goes into lakes. A serious concern raised with me by my constituents is Welsh water discharge into the River Tawe at the Trebanos treatment works in the Neath constituency, which affects water in my constituency, because the water from Trebanos comes down until it hits the sea in your constituency, Minister. What discussions has the Minister had with Welsh water regarding discharge into rivers?

Yes, thank you, Mike Hedges. As Mike Hedges will know, we've got a very good overflow scheme, which is a natural solution in his constituency, I think it is, at the top, which benefits my constituency. And that's a very good example of catchment area approaches, because obviously the river flows through a large number of different areas of Wales. It's very important therefore to make sure that we have sustainable nature-based solutions to divert, as he says, as much surface water as possible away from the sewerage systems in the first place to avoid the overflow that he speaks of.

We've taken a number of steps to tackle discharges from overflows. This includes making sustainable drainage systems, or SuDS, mandatory on almost all new building developments. The purpose of this is to relieve pressure on the network by redirecting and slowing down the speed at which such surface water enters the sewage system and it will help ensure that our storm overflows are used only as a very last resort.

As we speak, the water companies are preparing drainage and waste water management plans, which will be published for public consultation at the beginning of next year. The plans will provide a mechanism for water companies, local authorities and landowners to work together to develop a resilient and affordable waste water network to identify evidence-based priorities for investment.

I have had a number of meetings with Dŵr Cymru Welsh Water. I understand that they have investigated high-spilling combined overflows in the River Tawe as part of their storm overflow assessment framework investigations. Natural Resources Wales is working with the water companies to ensure investment is targeted appropriately. They also ensure that using nature-based solutions, which will reduce discharges from overflows and deliver wider environmental and social benefits, are taken into account when planning the network.