abandoned water right
a water right which was not put to beneficial use for a number of years,
generally five to seven years.
a well which is no longer used. In many places, abandoned wells must be
filled with cement or concrete grout to prevent pollution of ground water
a process in which one substance permeates another; a fluid permeates or
is dissolved by a liquid or solid.
the process of pollutants moving out of water and attaching on to activated
a variety of argillaceous silicates with similar behavior under certain
conditions, but modified in several ways to obtain the desired properties.
the molecular attraction asserted between the surfaces of bodies in contact.
the adhesion of a substance to the surface of a solid or liquid. Adsorption
is often used to extract pollutants by causing them to be attached to
such adsorbents as activated carbon or silica gel.
the mixing or turbulent exposure of water to air and oxygen to dissipate
volatile contaminants and other pollutants into the air.
soils which are predominantly clay or abounding in clays or claylike materials.
an in situ technology in which air is injected through a contaminated
aquifer. Injected air creates an underground stripper that removes contaminants
by volatilization, flushing (bubble) the contaminants up into the unsaturated
zone where a vapor extraction system is usually implemented in conjunction
with air sparging to remove the generated vapor phase contamination.
the measurement of constituents in a water supply which determine alkaline
conditions. The alkalinity of water is a measure of its capacity to neutralize
acids. See pH.
The native form of aluminum oxide occurring as corundum or in hydrated
forms as a powder or crystalline substance.
members of any of the groups of the silicates of aluminum which have the
same chemical makeup but with distinct characteristics in terms of refractory/flux
and crystalline geometry owing to how each chain their elements
a class of organic compounds of nitrogen that may be considered as derived
from ammonia (NH3) by replacing one or more of the hydrogen atoms by organic
radicals, such as CH3 or C6H5, as in methylamine and aniline. The former
is a gas at ordinary temperature and pressure, but other amines are liquids
or solids. All amines are basic in nature and usually combine readily
with hydrochloric or other strong acids to form salts.
a dense, shiny coal that has a high carbon content and little volatile
matter and burns with a clean flame. Also called hard coal.
attapulgite is a magnesium aluminum silicate clay of very fine particle
size. It is also known as palygorskite or Fullers Earth and is closely
related to Sepiolite mineral.
reverse seepage of water in a distribution system.
reversing the flow of water through a home treatment device filter or
membrane to clean and remove deposits.
BAT / BCL
Best Conventional Pollutant Control Technology - effluent limitations
guidelines represent the best existing economically achievable performance
of water treatment in an industrial subcategory or category.
unique material composed essentially of montmorillonite clay, also known
as hyrdous silicate of alumina
A coal which is high in carbonaceous matter having a volatility greater
than that of anthracite and a calorific value greater than that of lignite.
In the US, it is often referred to as "soft coal".
a test used to evaluate the relative potency of a chemical by comparing
its effect on a living organism with the effect of a standard population
on the same type of organism.
a process that uses living organisms to remove pollutants.
designed to withdraw groundwater, free product, and soil gas in the same
process stream using a single pump. Groundwater is separated from the
free product and is treated and discharged.
a nutrient-rich organic material resulting from the treatment of wastewater.
Biosolids contain nitrogen and phosphorus along with other supplementary
nutrients in smaller doses, such as potassium, sulfur, magnesium, calcium,
copper and zinc. Soil that is lacking in these substances can be reclaimed
with biosolids use. The application of biosolids to land improves soil
properties and plant productivity, and reduces dependence on inorganic
wastewater from toilet, latrine, and agua privy flushing and sinks used
for food preparation or disposal of chemical or chemical-biological ingredients.
blast enhanced fracturing
fractures are developed by fracturing beneath the surface in low permeability
and over-consolidated sediments to open new passageways that increase
the effectiveness of many in situ processes and enhance extraction efficiencies.
the temperature at which a liquid boils. It is the temperature at which
the vapor pressure of a liquid equals the pressure on its surface. If
the pressure of the liquid varies, the actual boiling point varies. For
water it is 212 degrees Fahrenheit or 100 degrees Celsius.
BTEX is an acronym for benzene, toluene, ethylbenzene, and xzylene. This
group of volatile organic compounds (VOCs) is found in petroleum hydrocarbons,
such as gasoline, and other common environmental contaminants.
highly salty and heavily mineralized water containing heavy metal and
CACO3 - a white precipitate that forms in water lines, water heaters and
boilers in hard water areas; also known as scale.
the collective term for the natural inorganic chemical compounds related
to carbon dioxide that exist in natural waterways.
to unite with carbon; turn into carbon, as by burning; "carbonize
A substance or agent capable of causing or producing cancer in mammals,
an atom or molecule has more protons (positively charged particles) than
electrons (negatively charged particles), it has an overall positive charge
and is called a cation.
Comprehensive Environment Response, Compensation and Liability Act. Also
known as SUPERFUND. The Act gave EPA the authority to clean up abandoned,
leaky hazardous waste sites.
certificate of water right
an official document which serves as court evidence of a perfected water
the adding of chlorine to water or sewage for the purpose of disinfection
or other biological or chemical results.
a disease from an intestinal infection caused by contaminated water or
food. The symptoms are watery diarrhea, vomiting, muscle cramps, and severe
in water treatment, the use of chemicals to make suspended solids gather
or group together into small flocs.
a molecular attraction by which the particles of a body are united throughout
the mass whether like or unlike. Compare adhesion.
nonpathogenic microorganisms used in testing water to indicate the presence
of pathogenic bacteria.
finely divided solids which will not settle but which may be removed by
coagulation or biochemical action.
to protect from loss and waste. Conservation of water may mean to save
or store water for later use.
the introduction into water of sewage or other foreign matter that will
render the water unfit for its intended use.
water free of inorganic chemicals.
the process of salt removal from sea or brackish water.
the lowest level that can be determined by a specific analytical procedure
or test method.
distilled water that has been stabilized, buffered, and aerated.
the volume of water that passes a given point within a given period of
time. It is an all-inclusive outflow term, describing a variety of flows
such as from a pipe to a stream, or from a stream to a lake or ocean.
a permit issued by a state or the federal government to discharge effluent
into waters of the state or the United States. In many states both State
and federal permits are required.
the killing of the larger portion of the harmful and objectionable bacteria
in the sewage. Usually accomplished by introduction of chlorine, but more
and more facilities are using exposure to ultraviolet radiation, which
renders the bacteria sterile.
the process by which solid particles mix molecule by molecule with a liquid
and appear to become part of the liquid.
inorganic material contained in water or wastes. Excessive dissolved solids
make water unsuitable for drinking or industrial uses.
water that has been treated by boiling and condensation to remove solids,
inorganics, and some organic chemicals.
of a stream at a specified location is that area, measured in a horizontal
plane, enclosed by a topographic divide from which direct surface runoff
from precipitation normally drains by gravity into the stream above the
the portion of pore space in saturated permeable material where the movement
of water takes place.
any substance, particularly a liquid, that enters the environment from
a point source. Generally refers to wastewater from a sewage treatment
or industrial plant.
aggregate of external conditions that influence the life of an individual
organism or population.
Environmental Protection Agency
the wearing away of the land surface by wind, water, ice or other geologic
agents. Erosion occurs naturally from weather or runoff but is often intensified
by human land use practices.
thin zone along a coastline where freshwater system(s) and river(s) meet
and mix with a salty ocean (such as a bay, mouth of a river, salt marsh,
the change by which any substance is converted from a liquid state and
carried of in vapor. Compare condensation, sublimation.
the portion of the coliform bacteria group which is present in the intestinal
tracts and feces of warm-blooded animals. A common pollutant in water.
a device used to remove solids from a mixture or to separate materials.
Materials are frequently separated from water using filters.
the mechanical process which removes particulate matter by separating
water from solid material, usually by passing it through sand.
large scale treatment process involving gentle stirring whereby small
particles in flocs are collected into larger particles so their weight
causes them to settle to the bottom of the treatment tank.
the rate of water discharged from a source expressed in volume with respect
water containing less than 1,000 parts per million (ppm) of dissolved
solids of any type. Compare saline water.
A unit of volume. A U.S. gallon contains 231 cubic inches, 0.133 cubic
feet, or 3.785 liters. One U.S. gallon of water weighs 8.3 lbs.
granular activated carbon (GAC)
pure carbon heated to promote "active" sites which can adsorb
pollutants. Used in some home water treatment systems to remove certain
organic chemicals and radon.
wastewater from clothes washing machines, showers, bathtubs, handwashing,
lavatories and sinks that are not used for disposal of chemical or chemical-biological
water within the earth that supplies wells and springs; water in the zone
of saturation where all openings in rocks and soil are filled, the upper
surface of which forms the water table.
treatment systems or processes to remove hazards or contaminants from
water within the earth
the portion of runoff which has passed into the ground, has become ground
water, and has been discharged into a stream channel as spring or seepage
water containing a high level of calcium, magnesium, and other minerals.
Hard water reduces the cleansing power of soap and produces scale in hot
water lines and appliances.
hormite clays are chain silicates having certain structural features in
common with both tremolite and antigorite, although hormites have a silica
layer on both sides of the octahedral layer, silica sheet inversions limit
the width of the octahedral sheet, allowing it to grow in only one direction.
Chemical compounds that contain hydrogen and carbon. Most motor vehicles
and engines are powered by hydrocarbon-based fuels such as gasoline and
having a strong attraction to water. Hydrophilic molecules are soluble
in water and travel with the groundwater.
to repel water; water-repulsing adsorbents, often used to extract oil
material that does not permit fluids to pass through.
the quality or state of being impermeable; resisting penetration by water
or plant roots. Impervious ground cover like concrete and asphalt affects
quantity and quality of runoff.
tests for a specific contaminant, group of contaminants, or constituent
which signals the presence of something else (ex., coliforms indicate
the presence of pathogenic bacteria).
The water entering the pump, the filter or other equipment of space. Water
going into the pump is called in influent, while water leaving the pump
is called the effluent.
Between lamellae or laminae; as, interlamellar spaces.
bond in which one or more electrons from one atom are removed and attached
to another atom, resulting in positive and negative ions which attract
water which is applied to assist crops in areas or during times where
rainfall is inadequate.
line that connects points of equal temperature.
a structure (as a pier or mole of wood or stone) extending into a sea,
lake, or river to influence the current or tide or to protect a harbor.
a short ridge, hill, or mound of stratified drift deposited by glacial
a terrace of stratified sand and and gravel deposited by streams between
a glacier and an adjacent valley wall.
purified water used in the laboratory as a basis for making up solutions
or making dilutions. Water devoid of interfering substances.
a shallow pond where sunlight, bacterial action, and oxygen work to purify
wastewater. Lagoons are typically used for the storage of wastewaters,
sludges, liquid wastes, or spent nuclear fuel.
a thin plate or scale of anything, as a thin scale growing from the petals
of certain flowers; or one of the thin plates or scales of which certain
shells are composed.
developed by Irving Langmuir in 1916 to describe the dependence of the
surface coverage of an adsorbed gas on the pressure of the gas above the
surface at a fixed temperature, providing insight into the pressure dependence
of the extent of surface adsorption.
water containing contaminants which leaks from a disposal site such as
a landfill or dump.
extraction or flushing out of dissolved or suspended materials from the
soil, solid waste, or another medium by water or other liquids as they
percolate down through the medium to groundwater.
A young coal used almost exclusively for electric power generation. It
is brownish black in color and has a high moisture content, sometimes
as high as 45 percent, and a high ash content. It tends to disintegrate
when exposed to the weather. Also referred to as brown coal.
the rate of discharge of a stream for which there are equal numbers of
greater and lesser flow occurrences during a specified period.
new water derived from the atmosphere.
micrograms per liter - Ug/L
micrograms per liter of water. One thousands micrograms per liter is equivalent
to 1 milligram per liter. This measure is equivalent to parts per billion
the movement of oil, gas, contaminants, water, or other liquids through
porous and permeable rock.
milligrams per liter - mg/L
milligrams per liter of water. This measure is equivalent to parts per
an aluminum silicate (smectite) with a 2:1 layer structure composed of
two silica tetrahedral sheets and a shared aluminum and magnesium octahedral
sheet. Montmorillonite has a permanent negative charge that attracts interlayer
cations that exist in various degrees of hydration thus causing expansion
and collapse of the structure (i.e., shrink-swell).
municipal treatment plant
centrally located systems designed to treat water collected from a community
which may be composed of domestic wastewater, sewage, industrial wastes
any form of matter or energy obtained from the environment that meets
permit issued under the National Pollutant Discharge Elimination System
for companies discharging pollutants directly into the waters of the United
(non-aqueous phase liquid) - Layer or film of fluid immiscible with water.
nephlometric turbidity units.
as a pollutant, any element or compound, such as phosphorous or nitrogen,
that fuels abnormally high organic growth in aquatic ecosystems. Also
to remove oil from another element by means of adsorption or other chemical
oil spill cleanup
An accidental or intentional discharge of oil which reaches bodies of
water. Can be controlled by chemical dispersion, combustion, mechanical
containment, and/or adsorption. Spills from tanks and pipelines can also
occur away from water bodies, contaminating the soil, getting into sewer
systems and threatening underground water sources.
having a strong attraction to oils, (of a) substance that mixes readily
a chemical or molecular orientation favoring the attraction of hydrocarbons
or materials which are miscible in hydrocarbons. Organophilic materials
are characterized by weak dipole moments. They are basically immiscible
organically modified clay consisting of bentonite, composed mainly of
the clay mineral montmorillonite, which is modified with quaternary amines.
chemicals containing carbon.
a water treatment process that destroys bacteria and other microorganisms
through an infusion of ozone, a gas produced by subjecting oxygen molecules
to high electrical voltages.
Polynuclear Aromatic Hydrocarbon. Multi-ring compounds found in fuels,
oils, and creosote. These are also common combustion products.
microorganisms which can cause disease.
Pentachlorophenol. A toxic white crystalline compound, used in solution
as a fungicide and wood preservative. Very toxic by inhalation. Toxic
by ingestion. Inhalation or ingestion may be fatal. Risk of irreversible
effects. Severe eye irritant. Inhalation may cause poisoning of the circulatory
system with possible heart failure. Readily absorbed through the skin.
in a wastewater treatment plant, the highest flow expected to be encoutered
under any operational conditions, including periods of high rainfall and
prolonged periods of wet weather.
the ability of a water bearing material to transmit water. It is measured
by the quantity of water passing through a unit cross section, in a unit
time, under 100 percent hydraulic gradient.
permeable reactive barriers
an emplacement of reactive materials in the subsurface designed to intercept
a contaminant plume, provide a preferential flow path through the reactive
media, and transform the contaminant(s) into environmentally acceptable
forms to attain remediation concentration goals at the discharge of the
numeric value that describes the intensity of the acid or basic (alkaline)
conditions of a solution. The pH scale is from 0 to 14, with the neutral
point at 7.0. Values lower than 7 indicate the presence of acids and greater
than 7.0 the presence of alkalis (bases). Technically speaking, pH is
the logarithm of the reciprocal (negative log) of the hydrogen ion concentration
(hydrogen ion activity) in moles per liter.
a plant nutrient that can cause an overabundance of bacteria and algae
when high amounts are present, leading to a depletion of oxygen and fish
kills. High levels of phosphorous in water are usually caused by agricultural
runoff or improperly operating wastewater treatment plants. Also see nitrogen.
group of silicate minerals that have each set of tetrahedrons surrounded
by three oxygen atoms, forming a sheet like structure.
the use of plants to remediate contamination by the uptake (transpiration)
of contaminated water by plants. Plants can be used to contain, remove,
or degrade contaminants.
undesireable change in the physical, chemical, or biological characteristics
of the air, water, or land that can harmfully affect the health, survival,
or activities of human or other living organisms.
a body of water usually smaller than a lake and larger than a pool either
naturally or artificially confined.
something which allows water to pass through it. Compare nonporous.
suitable, safe, or prepared for drinking. Compare non-potable.
ppb - parts per billion
number of parts of a chemical found in one billion parts of a solid, liquid,
or gaseous mixture. Equivalent to micrograms per liter (Ug/L).
ppm - parts per million
number of parts of a chemical found in one million parts of a solid, liquid,
or gaseous mixture. Equivalent to milligrams per liter (mg/L).
mechanical treatment in which large solids are screened out and suspended
solids in the sewage settle out as sludge. Compare secondary treatment,
water associated with oil and gas reservoirs that is produced along with
the oil and gas.
a device which moves, compresses, or alters the pressure of a fluid, such
as water or air, being conveyed through a natural or artificial channel.
quaternary ammonium compounds - the number of newer quaternaries is extensive
and future technologies and applications are being constantly developed
on this class of compounds.
consisting of or especially arranged in sets of four
the moisture content of freshly quarried stone, esp. if porous.
domestic wastewater that is under the direct control of a treatment plant
owner/operator which has been treated to a quality suitable for a beneficial
cleanup or other methods used to remove or contain a toxic spill or hazardous
materials from a contaminated area.
surface water entering rivers, freshwater lakes, or reservoirs.
water containing more than 1,000 parts per million (ppm) of dissolved
solids of any type. Compare fresh water.
amount of dissolved salts in a given volume of water.
the condition of a liquid when it has taken into solution the maximum
possible quantity of a given substance at a given temperature and pressure.
hydrous silicate of magnesia and alumina. It occurs in soft, soapy, amorphous
masses, filling veins in serpentine and cavities in trap rock
second step in most waste treatment systems, in which bacteria break down
the organic parts of sewage wastes; usually accomplished by bringing the
sewage and bacteria together in trickling filters or in the activated
sludge process. Compare primary treatment, tertiary treatment. Compare
primary treatment, tertiary treatment.
soil particles, sand, and minerals washed from the land into aquatic systems
as a result of natural and human activities.
use of soil particles, sand, and minerals to place a clean layer of sediment
to act as an effective means of containment of contaminants.
a large scale water treatment process where heavy solids settle out to
the bottom of the treatment tank after flocculation.
a spot where water contained in the ground oozes slowly to the surface
and often forms a pool; a small spring.
a sewer system that carries only sanitary sewage, not stormwater runoff.
When a sewer is constructed this way, wastewater treatment plants can
be sized to treat sanitary wastes only and all of the water entering the
plant receives complete treatment at all times. Comparecombined sewer.
underground receptacle for wastewater from a home. The bacteria in the
sewage decopose the organic wastes, and the sludge settles to the bottom
of the tank. The effluent flows out of the tank into the ground through
in sewage, suspended solids that will settle when the sewage is brought
to a quiet state for a reasonable length of time, usually two hours.
rock or mineral whose structure is dominated by bonds of silicon and oxygen
atoms (ie. olivine)
solid matter that settles to the bottom of sedimentation tanks in a sewage
treatment plant and must be disposed of by digestion or other methods
or recycled to the land.
A group of clay minerals that includes montmorillonite. This type of mineral
tends to swell when exposed to water. Bentonite includes minerals of the
precipitation that does not infiltrate into the ground or evaporate due
to impervious land surfaces but instead flows onto adjacent land or water
areas and is routed into drain/sewer systems.
also called Black Lignite, dark brown to black coal intermediate in rank
between lignite and bituminous coal. Subbituminous coals often have a
silky lustre and sometimes are macroscopically indistinguishable from
the bituminous variety.
a term meaning, generally, a surface to which something adheres, the base
material to be printed on, or the surface to which a pressure sensitive
decal is adhered. In particular, any surface on which screen printing
water that flows in streams and rivers and in natural lakes, in wetlands,
and in reservoirs constructed by humans.
Toxic Characteristic Leaching Procedure (TCLP) is an EPA SW-846 analytical
method (Method 1311) that simulates sanitary landfill contaminant leaching
in waste samples. Based upon concentrations of the TCLP constituents and
guidelines set forth in 40 CFR 261.4, the solid waste samples can be deemed
hazardous or non-hazardous.
technology-based treatment requirements
NPDES permit requirements based on the application of pollution treatment
or control technologies including BTP (best practicable technology), BCT
(best conventional technology), BAT (best available technology economically
achievable), and NSPS (new source performance standards).
removal from wastewater of traces or organic chemicals and dissolved solids
that remain after primary treatment and secondary treatment.
TDS - total dissolved solids
the sum or all inorganic and organic particulate material. TDS is an indicator
test used for wastewater analysis and is also a measure of the mineral
content of bottled water and groundwater. There is a relationship between
TDS and conductivity. In general, for the San Antonio River basin, TDS/.6
approximates conductivity. Or, conductivity * .6 approximates TDS. People
monitoring water quality can measure electrical conductivity quickly in
the field and estimate TDS without doing any lab tests at all. See specific
Toxicity Reduction Evaluation (TRE)
a study conducted to determine the source(s) of toxicity in a discharge
effluent so that these sources can be controlled sufficiently to allow
a discharger to comply with their permit limits.
the means to determine the toxicity of a chemical or an effluent using
living organisms. A toxicity test measures the degree of response of an
exposed test organism to a specified chemical or effluent.
Any method, technique, or process, including neutralization, designed
to change the physical or chemical character or composition of any hazardous
waste so as to neutralize such waste or so as to render such waste nonhazardous,
safer for transport, amenable for recovery, amenable for storage, or reduced
in volume. Such terms includes any activity or processing designed to
change the physical form or chemical composition of hazardous waste so
as to render it nonhazardous.
thick or opaque with matter in suspension. Rivers and lakes may become
turbid after a rainfall.
turf reinforcement mat
Turf Reinforcement Mats (TRMs) combine vegetative growth and synthetic
materials to form a high-strength mat that helps to prevent soil erosion
in drainage areas and on steep slopes. TRMs are classified as a "soft
engineering practice" which may replace concrete and rip rap in certain
erosion control situations.
an upward flow.
van der Waals forces
The physical forces of attraction and repulsion existing between molecules
and which are responsible for the cohesion of molecular crystals and liquids.
The forces stem partly from dipole-dipole, or dipole-induced-dipole interactions;
however, even nonpolar molecules and atoms exert a certain attraction
on one another. Van der Waals forces act only over relatively short distances,
and are proportional to the inverse of the seventh power of the intermolecular
vested water right
the right granted by a state water agency to use either surface or ground
water containing waste including greywater, blackwater or water contaminated
by waste contact, including process-generated and contaminated rainfall
wastewater treatment system
a system designed with the express purpose of removing waste or contaminants
the liquid that descends from the clouds as rain; forms streams, lakes,
and seas, and is a major constituent of all living matter. It is an odorless,
tasteless, colorless, very slightly compressible liquid.
degradation of a body of water by a substance or condition to such a degree
that the water fails to meet specified standards or cannot be used for
a specific purpose.
water quality standards
laws or regulations, promulgated under Section 303 of the Clean Water
Act, that consist of the designated use or uses of a waterbody or a segment
of a waterbody and the water quality criteria that are necessary to protect
the use or uses of that particular waterbody. Water quality standards
also contain an antidegradation statement. Every State is required to
develop water quality criteria standards applicable to the various waterbodies
within the State and revise them every 3 yeaars.
the aggregate toxic effect of an effluent measured directly by a toxicity
Water Quality Association is a non-profit organization representing the
clean and pure drinking water industry for homes, farms, businesses and
location of high quality bentonite, called "wyoming bentonite"
creative landscaping for water and energy efficiency and lower maintenance.
The seven xeriscape principles are: good planning and design; practical
lawn areas; efficient irrigation; soil improvement; use of mulches; low
water demand plants; good maintenance.
the quantity of water expressed either as a continuous rate of flow (cubic
feet per second, etc.) or as a volume per unit of time. It can be collected
for a given use, or uses, from surface or groundwater sources on a watershed.
zeolite is a class of hydrated aluminosilicates found in certain volcanic
rocks. Once upon a time, geologists thought these minerals were interesting
because they consist of large cage-like structures with open channelways.
zone of saturation
the space below the water table in which all the interstices (pore spaces)
are filled with water. Water in the zone of saturation is called groundwater.