Contaminants Table

Types of ContaminantsDescription
Microbial Contaminants
(Such as viruses, parasites and bacteria)
May come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.
Inorganic Contaminants
(Such as salts and metals)
Can occur naturally or may result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining, and farming.
Pesticides and HerbicidesMay come from a variety of sources such as agriculture, urban stormwater runoff, and residential uses.
Organic Chemical Contaminants
(Including synthetic and volatile organic chemicals)
By-products of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff, and septic systems.
Radioactive ContaminantsCan be naturally occurring or the result of oil and gas production and mining activities.