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  1. Nitrate (as N)

    https://ohiowatersheds.osu.edu/node/1536

    GENERAL INFORMATION Nitrates (NO 3) in drinking water usually originates from fertilizers or from animal or human wastes. Nitrate concentrations in water tend to be highest in areas of intensive agriculture or where there is a high density of septic syste ...

  2. Extension Emergency Policy and Operations

    https://agsafety.osu.edu/extension-emergency-policy-and-operations

    Emergency Policy and Operations for Ohio State University Extension Personnel State and County Responsibilities in the Event of National Security, Technological and Other Emergencies, and Natural Disasters Policy ...

  3. Iron

    https://ohiowatersheds.osu.edu/node/1519

    GENERAL INFORMATION Iron is common in the earth's crust. Iron is often found in water because of the large amount of iron present in the soil, sediment, and bedrock. It is also found in water because corrosive water will pick up iron from pipes. Iron ...

  4. Chemical Oxygen Demand (COD)

    https://ohiowatersheds.osu.edu/node/1535

    GENERAL INFORMATION Chemical oxygen demand (COD) is an indicator test commonly used to indirectly measure the amount of organic compound pollutants in water. Most applications of COD determine the amount of organic pollutants found in surface water (e.g. ...

  5. Uranium

    https://ohiowatersheds.osu.edu/node/1544

    GENERAL INFORMATION Most drinking water sources have very low levels of uranium if shallow wells (under oxidizing conditions). Most uranium is naturally occurring, although contamination of drinking water sources from human-made nuclear materials can also ...

  6. Radon

    https://ohiowatersheds.osu.edu/node/1545

    GENERAL INFORMATION Radon is a gas that has no color, odor, or taste and comes from the natural radioactive breakdown of uranium in the ground. You can be exposed to radon through air and water. Radon is also found in small amounts in outdoor air. Most of ...

  7. Combined radium

    https://ohiowatersheds.osu.edu/node/1543

    GENERAL INFORMATION Most drinking water sources have very low levels of radioactive contaminants ("radionuclides"), most of which are naturally occurring, although contamination of drinking water sources from human-made nuclear materials can als ...

  8. Beta/photon emitters

    https://ohiowatersheds.osu.edu/node/1541

    GENERAL INFORMATION Most drinking water sources have very low levels of radioactive contaminants ("radionuclides"), most of which are naturally occurring, although contamination of drinking water sources from human-made nuclear materials can als ...

  9. Alpha emitters

    https://ohiowatersheds.osu.edu/node/1542

    GENERAL INFORMATION Most drinking water sources have very low levels of radioactive contaminants ("radionuclides"), most of which are naturally occurring, although contamination of drinking water sources from human-made nuclear materials can als ...

  10. Thallium

    https://ohiowatersheds.osu.edu/node/1526

    GENERAL INFORMATION Thallium is a metal found in natural deposits such as ores containing other elements. The major sources of thallium in drinking water are leaching from ore-processing sites; and discharge from electronics, glass, and drug factories. HE ...

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