DEFINITIONS
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Action Level (AL) - The concentration of a contaminant that, if exceeded, triggers a treatment or other requirement that a water system must follow.
Inorganic Chemicals - Chemical substances of mineral origin, such as lead and copper.
Maximum Contaminant Level (MCL) - The highest level of a contaminant allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Maximum Contaminant Level Goal (MCLG) - The level of a contaminant in drinking water below which there is no known or expected risk to health.
Microbiological Contaminants - Very small organisms, such as bacteria, algae, plankton, and fungi.
![[Cryptosporidium]](crypto.gif) |
Cryptosporidium is a microscopic organism found in rivers and streams that can cause diarrhea, fever and gastrointestinal symptoms if ingested. It finds its way into the watershed through animal wastes.
Cryptosporidium is effectively eliminated by treatment processes that include sedimentation, filtration, and disinfection.
Cryptosporidium has NEVER been found in your drinking water.
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N/A - Not applicable
NTU - Nephelometric Turbidity Units.
Organic Contaminants - Naturally occurring or synthetic substances containing mainly carbon, hydrogen, nitrogen, and oxygen. This includes most pesticides and industrial chemicals.
pCi/l - picocuries per liter.
mg/l - micrograms per liter; parts of contaminant per billion parts of water. One part per billion (ppb) is equivalent to a single penny in ten million dollars.
mg/l - milligrams per liter; parts of contaminant per million parts of water. One part per million (ppm) is equivalent to a single penny in ten thousand dollars.
Radionuclides - Contaminants giving off ionizing radiation.
Treatment Technique (TT) - A required process intended to reduce the level of a contaminant in drinking water.