(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