Exam Coverage
Exam coverage for the D2 - Water Distribution Operator Exam
(California) includes the technical knowledge and operational skills
required to safely operate and maintain a California Grade D2 water
distribution system. It focuses on distribution-system operation,
water quality, system components, monitoring, maintenance, safety,
and regulatory compliance. The assessment emphasizes the
operator's ability to maintain reliable water delivery while protecting
public health.
,Transmission Main
A very large main designed to move water from one part of the
system to another.
Shut-Off Valve
A type of valve the water company uses when they need to turn
water off to a particular consumer.
,Where is a Shut-Off Valve typically located?
Usually found connected to a consumer's meter.
Why might a water company need to shut water off to a particular
consumer?
Because of a request to connect or disconnect, for repairs, or as a
result of non payment.
, three sources of supply
Surface water treatment plants, Import/Purchased water, and Wells.
two most common types of Shut-Off Valves
Curb stop & Angle stop.
Meters
Devices used to read consumer usage.