The Minister knows better than I that an enormous amount of the damage to our water is caused by urbanisation, agriculture or some of the more traditional industries. Waste from a milk plant can do enormous damage to our rivers but most think a milk plant could not do much harm. Many believe the computer industry is clean but Silicon Valley is probably the most polluted ground in the United States from post-production waste. I would like to hear the Minister's thoughts about how established industries can be chivvied up to meet the same standards over a period of time.