BBC News
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image copyrightAfonydd Cymru
image captionThere is an average of three farm pollution incidents a week in Wales, the government says
New rules on rural pollution are draconian say farming unions, but are being welcomed by wildlife groups.
The regulations have been designed to have a significant and ongoing impact on agricultural incidents, said the Welsh Government.
To tackle river pollution, the rules focus on farmers use of slurry and fertilisers on their land.
Ministers said they have acted as the industry itself had not done enough to combat the issue.
The potential of introducing new regulations - which are now due to come into force on 1 April - has been discussed for several years by the Welsh Government.