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Organisms (bacteria, viruses, and cysts) capable of causing disease. (giardiasis, cryptosporidiosis, typhoid, cholera, dysentery)
For a given excavation in a specific soil there is a certain angle at which the surrounding soil will not slide or cave into the trench.
A bacterium, virus, or other microorganism that can cause disease.
Quicklime that has been combined with water. Also called slaked lime or calcium hydroxide.
Any connection between a potable water system and another fluid system through which contamination could enter the potable water system.
A mineral material (glauconite) that looks like ordinary filter sand except it is green. It is treated with potassium permanganate and is used to remove iron, manganese, and hydrogen sulfide from groundwater.
A condition which can occur when pumps are run too fast or water is forced to change directions quickly. This condition can cause pitting of the impeller and reduce pump efficiency.
Click on the “+” symbols to learn about Iron and Manganese Staining Manganese in the water supply will cause brown or black spots on laundry and plumbing fixtures. The maximum desirable level of manganese is 0.05 mg/L to avoid staining. The threshold at which it creates an undesirable taste in the water is 5 mg/L. Therefore, manganese will […]