Smokers inhale more tar, nicotine and carbon monoxide when measured with WHO method RIVM has measured the amount of tar, nicotine and carbon monoxide (TNCO) in all filter cigarettes sold in the Netherlands with the WHO Intense method.
More attention needed for potential impact of drug waste on drinking water quality Drug waste contains substances that are harmful to the quality of drinking water. Because this waste is dumped illegally, these substances can end up in sources of drinking water.