The following words and terms when used in this chapter shall
have the following meanings unless the context clearly indicates otherwise.
(1) Beneficial use--An economic use of wastewater in
accordance with the purposes, applicable requirements, and quality
criteria of this chapter, and which takes the place of potable and/or
raw water that could otherwise be needed from another source. The
use of reclaimed water in a quantity either less than or the economically
optimal amount may be considered a beneficial use as long as it does
not constitute a nuisance.
(2) BOD5 --Five-day biochemical
(3) CBOD5 --Five-day carbonaceous
biochemical oxygen demand.
(4) CFU--Colony forming units.
(5) Domestic wastewater--Waste and wastewater from
humans or household operations that are discharged to a wastewater
collection system or otherwise enters a treatment works. Also, this
includes waterborne human waste and waste from domestic activities
such as washing, bathing, and food preparation, including greywater
and blackwater, that is disposed in an on-site wastewater system as
defined in Chapter 285 of this title (relating to On-Site Wastewater
(6) DRASTIC--A classification system for comparing
land units on the basis of their vulnerability to ground-water pollution,
a detailed description of which is found in Appendix 1 of this chapter.
(7) Edwards Aquifer--That portion of an arcuate belt
of porous, water bearing, predominantly carbonate rocks known as the
Edwards and Associated Limestones in the Balcones Fault Zone trending
from west to east to northeast in Kinney, Uvalde, Medina, Bexar, Comal,
Hays, Travis, and Williamson counties; and composed of the Salmon
Peak Limestone, McKnight Formation, West Nueces Formation, Devil's
River Limestone, Person Formation, Kainer Formation, Edwards Formation,
and Georgetown Formation. The permeable aquifer units generally overlie
the less-permeable Glen Rose Formation to the south, overlie the less-permeable
Comanche Peak and Walnut formations north of the Colorado River, and
underlie the less-permeable Del Rio Clay regionally. (See Chapter
213 of this title (relating to Edwards Aquifer).)
(8) Edwards Aquifer Recharge zone--Generally, that
area where the stratigraphic units constituting the Edwards Aquifer
crop out, and including the outcrops of other geologic formations
in proximity to the Edwards Aquifer, where caves, sinkholes, faults,
fractures, or other permeable features would create a potential for
recharge of surface waters into the Edwards Aquifer. The recharge
zone is identified as that area designated as such on official maps
located in the offices of the commission and the Edwards Underground
Water District. (See Chapter 213 of this title (relating to Edwards
(9) Food crop--Any crops intended for direct human
(10) Initial holding pond--An impoundment which first
receives reclaimed water from a producer at the quality levels established
by this chapter, not including subsequent holding ponds.
(11) Geometric mean--The nth root of the product of
all measurements made in a particular period of time, for example
in a month's time, where n equals the number of measurements made.
In the alternative, the geometric mean can also be computed as the
antilogarithm of the sum of the logarithm of each measurement made.
Where any measurement using either computation method equals zero,
it must be substituted with the value of one.
(13) Landscape impoundment--Body of reclaimed water
which is used for aesthetic enjoyment or which otherwise serves a
function not intended to include contact recreation.
(14) Leak detection system--A system or device designed,
constructed, maintained, and operated with a pond that is capable
of immediately detecting a release of leachate or reclaimed water
that migrates through a liner. The system may typically include a
leachate collection system along with either leak detection sensors
or view ports.
(15) Municipal wastewater--Waste or wastewater discharged
into a publicly owned or a privately owned sewerage treatment works
primarily consisting of domestic waste.
(16) mg/l--Milligram per liter.
(17) NTU--Nephelometric turbidity units.
(18) Nuisance--Any distribution, storage, or use of
reclaimed water, in such concentration and of such duration that is
or may tend to be injurious to or which adversely affects human health
or welfare, animal life, vegetation, or property, or which interferes
with the normal use and enjoyment of animal life, vegetation, or property.
(19) On-channel pond--An impoundment wholly or partially
within a definite channel of a stream in which water flows within
a defined bed and banks, originating from a definite source or sources.
The water may flow continuously or intermittently, and if intermittently,
with some degree of regularity, dependent on the characteristics of
the source or sources.
(20) Permit or permitted--A written document issued
by the commission or executive director in accordance with Chapter
305 of this title (relating to Consolidated Permits) which, by its
conditions, may authorize the permittee to construct, install, modify,
or operate, in accordance with stated limitations, a specified facility
for waste discharge, including a wastewater discharge permit.
(21) Pond system--Wastewater facility in which primary
treatment followed by stabilization ponds are used for secondary treatment
and in which the ponds have been designed and constructed in accordance
with applicable design criteria. (See Chapter 317 of this title (relating
to the Design Criteria for Sewerage Systems).)
(22) Producer--A person or entity that produces reclaimed
water by treating domestic wastewater or municipal wastewater, in
accordance with a permit or other authorization of the Agency, to
meet the quality criteria established in this chapter.
(23) Provider--A person or entity that distributes
reclaimed water to a user(s) of reclaimed water. For purposes of this
chapter, the reclaimed water provider may also be a reclaimed water
(24) Reclaimed water--Domestic or municipal wastewater
which has been treated to a quality suitable for a beneficial use,
pursuant to the provisions of this chapter and other applicable rules
(25) Restricted landscaped area--Land which has vegetative
cover to which public access is controlled in some manner. Access
may be controlled by either legal means (e.g. state or city ordinance)
or controlled by some type of physical barrier (e.g., fence or wall).
Example of such areas are: golf courses; cemeteries; roadway rights-of-way;
(26) Restricted recreational impoundment--Body of reclaimed
water in which recreation is limited to fishing, boating and other
non-contract recreational activities.
(27) Single grab sample--An individual sample collected
in less than 15 minutes.
(28) Spray irrigation--Application of finely divided
water droplets using artificial means.
(29) Subsequent holding pond--A pond or impoundment
which receives reclaimed water from an initial holding pond where
the quality of the water changes after management in the initial holding
pond, due to factors which may include:
(A) the addition of water occurs such as contributions
from surface water or ground water sources, but not including contributions
of reclaimed water, domestic wastewater, or municipal wastewater;
(B) some type of utilization of the reclaimed water
for a beneficial use occurs; or
(C) commingling of reclaimed water with surface water
runoff where it occurs between storage in an initial holding pond
and the subsequent holding pond.
(30) Surface irrigation--Application of water by means
other than spraying so that contact between the edible portion of
any food crop and the irrigation water is prevented.
(31) Type I reclaimed water use--Use of reclaimed water
where contact between humans and the reclaimed water is likely.
(32) Type II reclaimed water use--Use of reclaimed
water where contact between humans and the reclaimed water is unlikely.
(33) Unrestricted landscaped area--Land which has had
its plant cover modified and access to which is uncontrolled. Examples
of such areas are: parks; school yards; greenbelts; residences.
(34) User--Person or entity utilizing reclaimed water
for a beneficial use, in accordance with the requirements of this
chapter. A reclaimed water user may also be a producer or a provider.