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Securing Arizona's Water Future
Water Quality in the Safford Basin

Sites with parameter concentrations that have equaled or exceeded drinking water standard(s) (DWS), including location and parameter(s) are shown in Table 3.10-7A.  Impaired lakes and streams with site type, name, length of impaired stream reach, area of impaired lake, designated use standard and parameter(s) exceeded is shown in Table 3.10-7B.  Figure 3.10-9 shows the location of exceedences and impairment keyed to Table 3.10-7.  All community water systems are regulated under the Safe Drinking Water Act and treat water supplies to meet drinking water standards.  Not all parameters were measured at all sites; selective sampling for particular constituents is common.  A description of water quality data sources and methods is found in Volume 1, Appendix A.  Information on contamination sites in the basin is in Section 3.0.6 Water Supply - Contamination Sites.

Well, Mine or Spring sites that have equaled or exceeded drinking water standards (DWS)

  • Refer to Table 3.10-7A.
  • One hundred and fourteen sites have parameter concentrations that have equaled or exceeded DWS. 
  • Frequently equaled or exceeded parameters include fluoride and arsenic. 
  • Other parameters commonly equaled or exceeded in the sites measured in this basin were total dissolved solids, nitrates and lead.

Lakes and Streams with impaired waters

  • Water quality standards were exceeded in one reach of Cave Creek and one reach of the Gila River.
  • The parameter exceeded at Cave Creek was selenium.
  • The parameters exceeded at the Gila River included E. coli and sediment load.
  • The impaired portion of the Gila River in this basin is part of the ADEQ water quality improvement effort called the Total Maximum Daily Load  (TMDL) program.  A draft TMDL report is underway.

Effluent Dependent Reaches

  • Refer to Figure 3.10-10
  • This basin contains two effluent dependent reaches, Bennett Wash in the vicinity of Safford and an unnamed wash in the vicinity of Highway 60.  Bennett Wash receives effluent from the Arizona Department of Corrections Safford WWTF and the unnamed wash near Highway 60 receives effluent from the Arizona Department of Corrections Globe WWTF.

Click to view Table 3.10-10

Click to view Table 3.10-7 Water Quality Exceedences in the Safford Basin

Click to view Figure 3.10-10

Click to view Figure 3.10-10 Safford Basin Water Quality Conditions

 

 

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Farming in Safford Lake on San Carlos Reservation