1. A. Except for those systems that comply with Louisiana Revised Statute 40:4.12, a water supply system shall utilize the color scheme provided in Table 149.B below to facilitate the identification of above ground piping in treatment plants and pumping stations.

   Table 149.B Piping Color Code
   Water Lines
   Raw or Recycle	Olive Green
   Settled or Clarified	Aqua
   Finished or Potable	Dark Blue
   Chemical Lines
   Alum or Primary Coagulant	Orange
   Ammonia	White
   Carbon Slurry	Black
   Caustic	Yellow with Green Band
   Chlorine (Gas or Solution)	Yellow
   Chlorine Dioxide	Yellow with Violet Band
   Fluoride	Light Blue with Red Band
   Lime Slurry	Light Green
   Ozone	Yellow with Orange Band
   Phosphate Compounds	Light Green with Red Band
   Polymers or Coagulant Aids	Orange with Green Band
   Potassium Permanganate	Violet
   Soda Ash	Light Green with Orange Band
   Sulfuric Acid	Yellow with Red Band
   Sulfur Dioxide	Light Green with Yellow Band
   Waste Lines
   Backwash Waste	Light Brown
   Sludge	Dark Brown
   Sewer (Sanitary or Other)	Dark Gray
   Other
   Compressed Air	Dark Green
   Gas	Red
   Reclaimed Water	Purple
   Other liquids	Light Gray with a label

2. B. Any nonpotable water lines considered as plumbing (e.g., piping and outlets conveying nonpotable water within an office building, restroom, or other structure normally served by finished, potable water) and located on the water supply system’s property is required to be identified in accordance with the State Uniform Construction Code, LAC 17:I.
3. C. In lieu of the color coding of pipes as described above, all pipes may be painted similar colors as long as each and every pipe is banded and labeled at 5 foot intervals with the name of the liquid or gas clearly displayed on the pipe. Arrows indicating the direction of flow should be included in this labeling or utilize other methods approved by the state health officer.

Authority Note

AUTHORITY NOTE: Promulgated in accordance with the provisions of R.S. 40:4(A)(8), 40:4.13.D.(1)(2) and 40:5(A)(2)(3)(5)(6)(7)(17).

Historical Note

HISTORICAL NOTE: Promulgated by the Department of Health, Office of Public Health, LR 44:302 (February 2018), effective August 1, 2018.