analytical techniques that allow very low concentrations to be detected. There are several sources of pharmaceuticals in the environment, including most prominently effluent from sewage treatment plants, aquaculture and agricultural runoff. Cyanotoxins The growth of cyanobacterial blooms has been increasing due to the eutrophication (or increase in nutrient levels) of surface waters around the world. The increase in nutrients such as nitrogen and phosphorus has been linked to fertilizer runoff from agricultural fields and the use of products such as detergents in urban spaces. These blooms can release toxins that can decrease water quality and are a risk to human and wildlife health. Additionally, there is a lack of regulations regarding the maximum contaminant levels (MCL) allowed in drinking water sources. Cyanotoxins can have both acute and chronic toxic effects, and there are often many consequences for the health of the environment where these occur as well. Industrial chemicals Industrial chemicals from various industries are known to produce harmful chemicals that are known to cause harm to human health and the environment. Common industrial chemicals like 1,4-Dioxanes, Perfluorooctane sulfonate (PFOS) and Perfluorooctanoic acid (PFOA) are commonly found in various water sources. Adverse human health effects Due to the large differences in transportability of compounds, there is a great level of variance contaminant to contaminant between the location of contamination and the place of occurring hazards. An example of the a contaminant which can have detected hazards at the point of origin is the effect of municipal solid waste on the environment through seepage and particulate pollution. On the other hand, the effects of water-soluble contaminants may be obscured a long time as they are washed far away from the contamination site and only slowly accumulate in oceans and groundwater to harmful concentrations. Relation between compound and effects There is an overlap of many anthropogenically sourced chemicals that humans are exposed to regularly. This makes it difficult to attribute negative health causality to a specific, isolated compound. EPA manages a Contaminant Candidate List to review substances that may need to be controlled in public water systems. EPA has also listed twelve contaminants of emerging concern at federal facilities, with ranging origins, health effects, and means of exposure. The twelve listed contaminants are as follows: Trichloropropane (TCP), Dioxane, Trinitrotoluene (TNT), Dinitrotoluene, Hexahydro-trinitro-triazane (RDX), N-nitroso-dimethylamine (NDMA), Perchlorate, Polybrominated biphenyls (PBBs), Tungsten, Polybrominated diphenyl ethers (PBDEs) and Nanomaterials. Selected compounds listed as emerging contaminants