Classifying Water and Wastewater Systems

The classification of a water or wastewater system determines the required level of operator certification. Systems are classified according to complexity. The following charts summarize how systems are classified.

Water Systems

All water systems using a surface water source and serving at least 25 individuals per day, or 15 service connections, for more than 60 days per year are required to have a certified operator. Also, all water systems using groundwater and serving at least 25 of the same individuals per day for at least six months per year are required to have a certified operator.

The following table describes the different categories of water systems classification.

Water systems serving less than 25 individuals per day, AND water systems using a ground water source serving at least 25 different people per day for at least 60 days (transient non-community systems such as restaurants or hotels.)
No certified operators required.

 

Water systems serving fewer than 500 people and fewer than 100 service connections
Small Untreated
No chemicals added to the water.
May have passive forms of treatment, e.g. softening, cartridge filters, etc.
Small Treated
One chemical added to the water.
May have passive forms of treatment, e.g. softening, cartridge filters, etc.
Water Treatment
Systems that add more than one chemical, have membranes, do chemically aided filtration, or use UV light to meet an inactivation requirement.
Classified according to a point rating system. Click here for the classification worksheet.

 

Water systems serving more than 500 people or more than 100 service connections
Water Treatment
Classified according to a point rating system. Click here for the classification worksheet.
and
Water Distribution
Classified according to the number of service connections, whether water is heated/circulated, and number of pressure zones. Click here for the classification worksheet.

 

For additional detailed information concerning water system classification, click here.

Wastewater Systems

 

Wastewater systems serving fewer than 500 people and fewer than 100 service connections
No certified operators required.

 

Wastewater systems serving more than 500 people or more than 100 service connections
Wastewater Treatment
Classified according to a point rating system. Click here for the classification worksheet.
and
Wastewater Collection
Classified according to the number of service connections and number of mainline lift stations. Click here for the classification worksheet.

 

For additional detailed information concerning wastewater system classification, click here.

Questions?

Contact the Operator Training and Certification Program at (907) 465-1139 or dec.opcert@alaska.gov.