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Securing Arizona's Water Future
Water Quality in the Peach Springs Basin

Sites with parameter concentrations that have equaled or exceeded drinking water standard(s) (DWS), including location and parameter(s) are shown in Table 4.8-6A.  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 4.8-6B.  Figure 4.8-9 shows the location of exceedences and impairment keyed to Table 4.8-6.  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. 

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

  • Refer to Table 4.8-6A.
  • Twenty-nine sites have parameter concentrations that have equaled or exceeded DWS. 
  • The most frequently equaled or exceeded parameter was arsenic.  Other parameters commonly equaled or exceeded in the sites measured in this basin were cadmium, fluoride, lead, nitrates and mercury.

Lakes and Streams with impaired waters

  • Refer to Table 4.8-6B.
  • Water quality standards for selenium and suspended sediment were equaled or exceeded in one reach of the Colorado River between Parashant Canyon and Diamond Creek.
  • Only a very small portion of a 28-mile impaired reach of the Colorado River is in this basin.  The majority of the impaired reach is in the Coconino Plateau Basin in the Western Plateau Planning Area.
  • The Colorado River between Parashant Canyon and Diamond Creek is not part of the ADEQ water quality improvement effort called the Total Maximum Daily Load (TMDL) program at this time.

Click to view Table 4.8-6

Click for Table 4.8-6 Water Quality Exceedences in the

Peach Springs Basin

Click to view Figure 4.8-9

Click for Figure 4.8-9 Peach Springs Basin

Water Quality Conditions

 

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