(a) A new wastewater treatment facility must have color-coded pipes in accordance with subsection (e) of this section.
(b) A new wastewater treatment facility must have detectable underground warning tape for each non-metallic underground pipe.
(c) An existing wastewater treatment facility must color-code and install detectable underground warning tape for each pipe installed as part of an alteration.
(d) A non-potable water pipe must be painted purple and be stenciled "NON-POTABLE WATER, DO NOT DRINK" and "NO BEBA EL AGUA."
(e) A wastewater treatment facility design must use the following color-coding for pipes:
(1) sludge - brown;
(2) natural gas - red;
(3) potable water - light blue;
(4) chlorine - yellow;
(5) sulfur dioxide - lime green with yellow bands;
(6) sewage - grey;
(7) compressed air - light green;
(8) heated water - blue with 6 inch red bands spaced 30 inches apart;
(9) power conduit - in compliance with the National Fire Protection Association 70 National Electrical Code®;
(10) reclaimed water- purple with black lettering;
(11) gray water- purple with yellow writing;
(12) instrument air - light green with dark green bands;
(13) liquid alum - yellow with orange bands;
(14) alum (solution) - yellow with green bands;
(15) ferric chloride - brown with red bands;
(16) ferric sulfate - brown with yellow bands;
(17) polymers - white with green bands;
(18) ozone - stainless steel with white bands;
(19) raw water - tan; and
(20) effluent after clarification - dark green.
Source Note: The provisions of this §217.329 adopted to be effective August 28, 2008, 33 TexReg 6843; amended to be effective December 4, 2015, 40 TexReg 8254