24/07/26: Drought declared in North Wales, investing in water security, river pollution in Pembrokeshire.

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July is on course to be the driest in Wales for almost 190 years. It means that North Wales and the Upper Severn catchment are the first areas in the UK to be declared officially in drought, this year. So far this month they've seen less than two per cent of the usual rainfall. Natural Resources Wales says river levels are approaching all time lows after a series of back-to-back heatwaves, with impacts on wildlife and soil. In South East England, Sussex, Hampshire and the Isle of Wight have been moved into 'prolonged dry weather' status which is one step away from drought. That won't be news to farmers and growers in the area where some veg businesses are already investing to adapt to the 'new normal'. Barfoots grow broccoli and sweetcorn, amongst a long list of crops, for the supermarkets. The company's spent a million pounds on a new reservoir, at its farm near Chichester, which holds 28 million gallons of rain water supplemented by recycled treated water from their factory. Barfoots Commercial Director tells us the company is looking at building more reservoirs to store winter rainfall, to use in increasingly hot and dry summers. Farmers have a crucial role in cleaning up one of the UK's most polluted river systems and could save themselves money in the process, according to a new study. The eastern and western Cleddau rivers in Pembrokeshire flow through farmland which produces as much as 25% of Wales' milk. Researchers from Lancaster University found the area's farms were buying in more fertiliser and processed animal feed than needed, causing a build-up of phosphorus in the soil and polluting waterways. Now dairy farmers are working out their "nutrient footprint" to help tackle the problem. Presenter: Charlotte Smith Producer: Sarah Swadling