Treated Water Power Consumption
A. Water Project – Energy Requirements
Every drinking water supply requires energy, and there are four principal areas consuming energy. These
are:1
1. Source water extraction and delivery to the treatment plant (could be imported or nearby);
2. The treatment/purification process;
3. Distribution of drinking water; and
4. Residuals management, treatment, and discharge
Power costs associated with heating and cooling buildings and work spaces (HVAC), parking lot lighting, or
other miscellaneous items are generally very small (compared to the total energy cost) and quite similar for
comparable drinking water facilities of a similar size.
The hydraulics associated with transporting water requires pumps of varying capacity and pressure
amongst each of the four power-consuming areas previously described. For illustrative purposes, individual
factors that influence these areas are contained in Figure 1. Note that the actual percentage of energy
contribution to the total can vary and is discussed later on in this document.
Figure 1
Treated Water Power ConsumptionA. Water Project – Energy RequirementsEvery drinking water supply requires energy, and there are four principal areas consuming energy. Theseare:11. Source water extraction and delivery to the treatment plant (could be imported or nearby);2. The treatment/purification process;3. Distribution of drinking water; and4. Residuals management, treatment, and dischargePower costs associated with heating and cooling buildings and work spaces (HVAC), parking lot lighting, orother miscellaneous items are generally very small (compared to the total energy cost) and quite similar forcomparable drinking water facilities of a similar size.The hydraulics associated with transporting water requires pumps of varying capacity and pressureamongst each of the four power-consuming areas previously described. For illustrative purposes, individualfactors that influence these areas are contained in Figure 1. Note that the actual percentage of energycontribution to the total can vary and is discussed later on in this document.Figure 1
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