SECTION 217.329. Color Coding of Pipes

(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