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Pinal AMA Cultural Water Demand

Cultural water demand data including population, number of wells and the average well pumpage and non-groundwater use by the municipal, industrial and agricultural sectors are shown in Table 8.2-10.  Effluent generation including facility ownership, location, population served and not served, volume treated, disposal method and treatment level is shown in Table 8.2-11Figure 8.2-12 shows the location of demand centers.  A description of cultural water demand data sources and methods is found in Volume 1, Appendix A.  More detailed information on cultural water demands is found in Section 8.0.7.

Cultural Water Demands

  • Refer to Table 8.2-10 and Figure 8.2-12.
  • Population in the Pinal AMA increased from 40,956 in 1980 to 99,143 in 2000 and projections suggest an increase to over 624,128 residents by 2030.
  • Agricultural water use is by far the largest demand in the Pinal AMA. Approximately 96% of the average annual demand was agricultural in 2001-2005.
  • Approximately 45% of the agricultural demand in 2001-2003 was met with groundwater.
  • Average annual municipal demand in 2001-2005 increased roughly 30% from a decade earlier.    
  • The industrial sector accounted for approximately 1% of the total annual AMA water demand in the period between 2001-2005.
  • As of 2005 there were 2,077 registered wells with a pumping capacity of less than or equal to 35 gpm and 3,256 wells with a pumping capacity of more than 35 gpm.

Effluent Generation

  • Refer to Table 8.2-11.
  • 24 wastewater treatment facilities were identified in the AMA.
  • There are a wide range of effluent disposal methods with some of the most common being: discharge into an open watercourse, golf course irrigation, permitted recharge, industrial reuse and crop irrigation.
  • More than 7,000 acre-feet of effluent are treated/produced annually in the Pinal AMA.

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Table 8.2-10 Cultural Water Demand in the Pinal AMA

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Table 8.2-11 Effluent Generation in the Pinal AMA

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Figure 8.2-12 Pinal AMA Cultural Water Demand


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