alkalinity the measurement of constituents in a Soil that contains a sufficient amount of alkali substance to raise the pHĪbove 7.0. The potential tragedy is that of a "fish kill," where the stream life dies in one mass extinction. Algae bloom is usually the result of urban runoff (of lawn fertilizers, etc.). algal bloom a phenomenon whereby excessive nutrients within a river, stream or lake cause an explosion of plant life which results in the depletion of the oxygen in the water needed by fish and other aquatic life. They are food for fish and small aquatic animals. They can affect water quality adversely by lowering the dissolved That grow in sunlit waters in proportion to the amount of available alfet cauldron of boiling water used during trials by ordeal. aggressive water water which is soft and acidic and canĬorrode plumbing, piping, and appliances. Require, or are not destroyed by, the presence of oxygen.Īffusion pouring on as of baptismal water.Īggradation a progressive build up of a channel bed with sediment over several years due to a normal sequence of scour and deposition, as distinguished from the rise and fall of the channel bed during a single flood. Such processes includeĮxtended aeration, trickling filtration, and rotating biological contactors. Liberated energy for reproduction and growth. aerobic treatment process by which microbesĭecompose complex organic compounds in the presence of oxygen and use the aeration tank a chamber used to injectĪir into water. Water to air and oxygen to dissipate volatile contaminantsĪnd other pollutants into the air.
aeration the mixing or turbulent exposure of Organic waste by stimulating the growth and activity of bacteria thatĭegrade organic waste. Pond that speeds up the natural process of biological decomposition of aerated lagoon a holding and/or treatment Includes the removal of nutrients such as phosphorus and nitrogen and a high That goes beyond the secondary or biological water treatment stage and Hydrophobic, or water-repulsing adsorbents, are used toĮxtract oil from waterways in oil spills. Adsorption is often used toĮxtract pollutants by causing them to be attached to suchĪdsorbents as activated carbon or silica gel. adsorption the adhesion of a substance to the Itĭescribes the actions to be taken, may be subject to a comment period,Īpplies to civil actions, and can be enforced in court. The required corrective or cleanup actions, or refrain from an activity. Violator agrees to pay for correction of Clean Water Act violations, take EPA and an individual, business, or other entity through which the Respondent to pay a penalty for violations of the Clean Water Act. Issued, for example, as a result of an administrative complaint ordering the It describes the violationsĪnd actions to be taken, and can be enforced in court. EPA directing an individual, business, or other entity to takeĬorrective action or refrain from an activity. administrative order a legal document signed by In many places, abandoned wells must be filled with cement or concrete grout to prevent pollution of ground water bodies. abandoned well a well which is no longer used. adjudication a court proceeding to determine all rights to the use of water on a particular stream system or ground water basin. adhesion the molecular attraction asserted between the surfaces of bodies in contact. activated carbon adsorption the process of pollutants moving out of water and attaching on to activated carbon. A flow of 1 cubic feet per second produces 1.98 acre-feet per day. An acre-foot equals 325,851 gallons, or 43,560 cubic feet. acre-foot the amount of water required to cover one acre to a depth of one foot. acidic the condition of water or soil that contains a sufficient amount of acid substances to lower the pH below 7.0. acid rain the acidic rainfall which results when rain combines with sulfur oxides emissions from combustion of fossil fuels. accretion a gradual increase in land area adjacent to a river. absorption the uptake of water, otherįluids, or dissolved chemicals by a cell or an organism (as tree rootsĪbsorb dissolved nutrients in soil). Glossary of Water Resource Terms A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A abandoned water right a water right which was not put to beneficial use for a number of years, generally five to seven years.
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