LAC 51:XII.149. Piping Color Code

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 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. 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.