179 Neb. Admin. Code, ch. 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.

Notes

179 Neb. Admin. Code, ch. 21, § 009