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Audience: Technical/Installer

  • Cash or Ash?

    This webinar discussed the ins and outs of doing business with cannabis operators. After you watch the webinar, you can earn 0.1 CPD by passing this quiz.

  • Arsenic Fact Sheet

    The presence of arsenic (As) in nature is due mainly to natural deposits of metalloids in the earth’s crust and usually in ancient rock formations. Arsenic enters ground water through erosion or from manmade sources such as wood preservative, petroleum production, semi-conductor manufacture or due to misuse of animal feed additives and arsenic-containing pesticides (e.g.…

  • Barium Fact Sheet

    Barium is a divalent cation and alkaline earth metal that can be found in naturally occurring mineral deposits. The most common ores are found in Alaska, Arkansas, California, Georgia, Kentucky, Montana, Nevada, and Tennessee. In 2010, 670 thousand tons of barite, a natural barium sulfate ore, were mined in the US, most of it in…

  • Cadmium Fact Sheet

    Cadmium occurs naturally in zinc, in lead and copper ores, in coal and other fossil fuels, in shales and is released during volcanic action. These deposits can serve as sources to ground and surface waters, especially when in contact with low total dissolved solids (TDS) and acidic waters. Major industrial releases of cadmium are due…

  • Chloramine Fact Sheet

    Many municipal water supplies have switched from chlorine to an alternative method of disinfection to reduce the formation of trihalomethanes (THMs). Chloramine, or chloramination, is a treatment method employed by public water systems, more than one in five Americans uses drinking water treated with chloramines. Chloramines do pose a risk for hemodialysis patients and fish. Nitrosamines can…

  • Chromium Fact Sheet

    Trivalent chromium occurs naturally in the environment and can be found in rocks and soil. It can also be found in fruits, vegetables and meat. Cr3+ is used to make bricks, metal alloys and chemical compounds. Hexavalent chromium does not occur naturally in the environment. It is produced by certain chemical processes and is considered…

  • Copper Fact Sheet

    Copper is a metallic element that is essential to human health. Too little is unhealthy and too much can lead to copper poisoning. The body cannot synthesize copper so the human diet must supply regular amounts for absorption. The daily requirement is about 2 mg of copper intake per day to maintain a balance of…

  • Lead Fact Sheet

    Lead has a tendency to be complexed and precipitated by a large number of substances. When released to land, lead binds to soils and does not migrate to ground water. In water, it binds to sediments, and it does not accumulate in fish. This is why it is seldom found in ground waters or natural…

  • Mercury Fact Sheet

    Mercury is a naturally occurring metal that has several forms. The metallic mercury is a shiny, silver-white, odorless liquid. If heated, it is a colorless, odorless gas. Mercury combines with other elements to form inorganic mercury compounds. Mercury also combines with carbon to make organic mercury compounds. The most common form of organic mercury, methyl…

  • Nitrites/Nitrates Fact Sheet

    Most nitrogenous materials in natural waters tend to be converted to nitrate, so all sources of combined nitrogen, particularly organic nitrogen and ammonia, should be considered as potential nitrate sources. Primary sources of organic nitrates include human sewage and livestock manure, especially from feedlots. The primary inorganic nitrates which may contaminate drinking water are potassium…