A/C: Air Conditioning
AC: Alternating Current
ac-ft: Acre Feet; a volume of water covering an acre a foot deep (43,560 cubic feet).
air-vac: Air Vacuum Valves
ASR: Aquifer Storage and Recovery
AWWA: American Water Works Association
C: The discharge coefficient used in the Hazen Williams equation of flow (the higher the C value the higher the flow through a pipe).
CNG: Compressed Natural Gas
DC/AC: Direct Current / Alternating Current
DEQ: Department of Environmental Quality
ERC: Equivalent Residential Connection
GIS: Geographic Information System
gpm: Gallons Per Minute
GPS: Global Positioning Systems
HGL: Hydraulic Grade Line
HO: Harmonic Oscillator
HVAC: Heating, Ventilating and Air Conditioning
Hz: Hertz; a measure of the cycles per second; used with electrical equipment.
IP: Internet Protocol
KG: 1,000 gallons
kw: Kilowatts; the primary unit of power.
kwh: Kilowatt Hours; the primary unit of energy usage.
KVAR: 1,000 VAR’s. See VAR.
KVARHr: The portion of energy usage attributed to reactive energy.
LED: Light-emitting Diode
LF: Load Factor; the measure of a time a facility runs during a billing cycle.
MG: Million gallons
mgd: Million Gallons per Day
O & M: Operation and Maintenance
PCV: Pressure Control Valve
PE: Plain End; Professional Engineer
PLC: Programmable Logic Controller
PRV: Pressure Reducing Valve
RMP: Rocky Mountain Power
RTD: Resistance Temperature Detector; temperature sensor.
RVSS: Reduced Voltage Soft Starter
SCADA: Supervisory Control and Data Acquisition; water system operation automation.
SMART Energy Grid: A method by which energy suppliers can monitor and control energy loads, such as reducing AC loads during the peak periods of the day.
THD: Total Harmonic Distortion
UPS: Uninterruptible Power Source
VFD: Variable Frequency Drive