(a) For the purpose of this chapter, graywater is defined
as wastewater from showers; bathtubs; handwashing lavatories; sinks
that are used for disposal of household or domestic products; sinks
that are not used for food preparation or disposal; and clothes-washing
machines. Graywater does not include wastewater from the washing of
material, including diapers, soiled with human excreta or wastewater
that has come in contact with toilet waste.
(b) Construction of a graywater reuse system, including
storage and disposal systems, must comply with this chapter; Chapter
210, Subchapter F of this title (relating to Use of Graywater and
Alternative Onsite Water); and any more stringent requirements of
the local permitting authority. For the purposes of this subchapter,
a graywater reuse system begins at the graywater stub-out of a single
family dwelling.
(c) A graywater reuse system must not create a nuisance
or damage the quality of surface water or groundwater. If a graywater
reuse system creates a nuisance, threatens human health, or damages
the quality of surface water or groundwater, the permitting authority
may take action under §285.71 of this title (relating to Authorized
Agent Enforcement of OSSFs).
(d) A graywater reuse system shall comply with the
requirements of this subchapter as they existed on the date installation
was completed. The previous version of this subchapter is continued
in effect for this purpose. Any alterations to an existing system
must comply with this chapter; Chapter 210, Subchapter F of this title;
and any more stringent requirements of the local permitting authority.
(e) No reduction in the size of the on-site sewage
facility (OSSF) will be allowed when using a graywater reuse system
unless the OSSF meets all of the conditions and requirements of §285.81
of this title (relating to Requirements and Conditions for Potentially
Reducing the Size of an OSSF Disposal System for a Single Family Residence
with a Graywater Reuse System or a Combined Reuse System).
(f) If the OSSF is not a reduced OSSF as described
in §285.81 of this title, the graywater from either a graywater
reuse system or a combined reuse system authorized under Chapter 210,
Subchapter F of this title may, be connected to the OSSF to dispose
of the graywater during periods when graywater is not being reused.
If the reuse system is a combined reuse system as defined under Chapter
210, Subchapter F of this title, the flows from alternative onsite
water sources must be diverted and shall not be allowed to enter the
OSSF. Alternative water reuse systems as defined in Chapter 210, Subchapter
F of this title, shall not be connected to the OSSF as OSSFs are not
authorized nor designed to treat or dispose of flows from alternative
onsite water sources. The piping connecting the graywater to the OSSF
shall meet the applicable requirements of Subchapter D of this chapter
(relating to Planning, Construction, and Installation Standards for
OSSFs).
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Source Note: The provisions of this §285.80 adopted to be effective February 5, 1997, 22 TexReg 1114; amended to be effective June 13, 2001, 26 TexReg 4115; amended to be effective January 6, 2005, 29 TexReg 12204; amended to be effective December 29, 2016, 41 TexReg 10378 |