Scottish Water said tighter environmental regulations had reduced the amount of waste it could put into the system and it had been working to deal with issue.

BBC: NEWS | UK | Scotland | Sewerage 'hampers planning hopes'

Many farmers using these seeds have even been able to implement a "no-till" system, which offers tremendous environmental benefits by preventing soil erosion, keeping farm water and chemical run-off out of local watersheds and releasing less carbon dioxide into the atmosphere.

FORBES: Magazine Article