A scheme offering financial assistance to land managers, owners and tenants, worth up to £10,000 a year, has been launched to improve drinking water for around 330,000 people in Scotland by reducing diffuse pollution.

Scottish Water's Best Practice Incentive Scheme is designed to improve and protect six of Scotland's key water supply catchments – the River Ugie and River Deveron in Aberdeenshire, the Loch of Lintrathen in Angus, Craigendunton Reservoir in Ayrshire, the Dumfries Aquifer and Loch Ascog in Argyll and Bute.

As well as affecting water quality, diffuse pollution can affect the profitability of farms through the loss of valuable nutrients, top soil and pesticides.

The new scheme offers grants for a range of measures such as establishing concrete areas for filling field sprayers with a grant worth up to £1250.

Other measures include placing new water troughs away from rivers and laying the necessary water pipes which attract payments of up to £195 per trough and £3 per metre of pipe, while fencing to keep livestock back from river banks will be grant aided at the rate of £4 per metre.

There will also be financial help for sprayer testing, soil analysis, training in diffuse pollution and for substituting more expensive but safer pesticides.

Peter Brown, Scottish Water's water quality regulation manager said: "By working together with land managers, owners and tenants in the catchments of drinking water sources, we can enhance drinking water standards, protect public health and promote more sustainable solutions than traditional treatment processes."

Further details of the scheme, specific issues in each catchments area, and the range of financial assistance available can be found at: www.scottishwater.co.uk/protectdwsources

United Auctions sold 3708 prime hoggs at Stirling on Thursday to a top of £107 per head and 235p per kg to average 180.4p (-8p on the week), while 27 prime lambs peaked at £118 and 245p to level at 225.1p. There were also 587 cast ewes that sold to £139.50 for Texels and £77.50 for Cheviots.

The Cumberland & Dumfriesshire Farmers' Mart sold 5073 prime hoggs in Longtown on Thursday to a top of £109.50 per head and 241p per kg to average 183p.

The firm also had 4851 cast sheep forward that included many plainer and hill-type ewes. Heavy ewes sold to £136.50 for Texels and averaged £93.33, while light ewes peaked at £90.50 for Beulahs and levelled at £60.62. Cast rams sold to £148.50 for Texels and averaged £88.17.