Section 179-21-009 - TREATMENT Transient public water systems that use ion exchange softeners are not subject to the following requirements. All other transient public water systems that use a process for removal of a primary or secondary contaminant, or apply chemicals for the purpose of conditioning, continuous disinfection, or adjustment of drinking water must do the following:
1. Maintain and record accurate measurement of chemical use no less often than five days per week.2. Provide an ammonia solution for use in detecting chlorine leaks when gas chlorination is used,.3. Store chemicals in accordance with manufacturer's recommendations for chemical compatibility.4. Maintain color coding in accordance with the following color scheme, or utilize other identification to easily differentiate between pipes. Water Lines |
Raw | 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 and solution) | Yellow |
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 |
Water Lines |
Backwash Waste | Light brown |
Sludge | Dark brown |
Sewer (sanitary or other) | Dark gray |
Other |
Compressed Air | Dark green |
Gas | Red |
Other Lines | Light gray |
5. Where applicable, maintain operational records and filtration log used in conjunction with treatment processes used for removal or inactivation of regulated contaminants for a minimum of five years.6. If disinfecting, provide approved methodology equipment for accurate measurement of disinfectant residual.7. When treating to remove or inactivate regulated contaminants, provide proper test equipment to determine process control changes.8. For systems that are required to disinfect on a continuous basis and have treatment facilities that are not staffed 24 hours per day, the system must provide a means by which a disinfectant is applied accurately on a continuous basis. This does not apply to systems under an Administrative Order that require chlorination for only six months.9. Record accurate measurement of gallons of water pumped per minute (gpm) and the total time pumped or total gallons pumped of each treatment plant not less than once per week.10. Provide functional operational controls for each filter used in conjunction with treatment processes consisting of removal of regulated contaminants.179 Neb. Admin. Code, ch. 21, § 009