Harmful substances in wastewater can be degraded by using flocculants.
"Health and social harms could increase if there is displacement to more harmful substances," they warned.
No harmful substances were found.
In the longer term, the Demos/UKPDC report proposes a "comprehensive harmful substances control act covering the supply of all potentially harmful substances, including alcohol, solvents and tobacco".
Ships have damaged the reef ecosystem through anchoring, groundings, collisions and the discharge of harmful substances.
The skin is a very effective barrier that protects us from potentially harmful substances.
These provide quick and easy insulation while containing natural dyes with no trace of harmful substances.
Addicts simply pay more for crummier product or switch to other, often more harmful, substances.
Some have been found to contain harmful substances as well as nicotine, as this study demonstrates".
Isaf tests into the Khost incident also showed no harmful substances present.
We need to recognise that to keep less harmful substances legal is as important as making more harmful ones illegal.
