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Securing Arizona's Water Future
Water Quality in the Salt River Basin

Wells, springs and mine sites with parameter concentrations that have equaled or exceeded drinking water standard(s), including location and parameter(s) are shown in Table 5.2-7A.  Impaired lakes and streams with site type, name, length of impaired reach, area of impaired lake, designated use standard and parameter(s) exceeded is shown in Table 5.2-7B.  Figure 5.2-10 shows the location of water quality occurrences keyed to Table 5.2-7.  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. 

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

  • Refer to Table 5.2-7A.
  • Seventy sites have parameter concentrations that have equaled or exceeded drinking water standards.  All but one occurrence is in the southwest portion of the basin.

    The most commonly equaled or exceeded parameter was cadmium.

  • Other standards equaled or exceeded in the basin include fluoride, beryllium, copper, lead, chromium, total dissolved solids, nitrates, arsenic and radionuclides.

Lakes and Streams with impaired waters

  • Refer to Table 5.2-7B.
  • Water quality standards in this basin were exceeded for two lakes and four stream reaches on two streams.

    The most commonly equaled or exceeded standard was copper.  Other standards equaled or exceeded include dissolved oxygen, high pH and selenium.

  • The three impaired reaches of Pinto Creek are part of the ADEQ water quality improvement effort called the Total Maximum Daily Load (TMDL) program. Phase I of the TMDL reports have been approved and specific site standards are being developed.

  • Canyon Lake, Crescent Lake and the Gibson Mine tributary are not a part of the TMDL program at this time.

Effluent Dependent Reaches

  • Refer to Figure 5.2-10
  • There is one effluent dependent reach in this basin, Pinal Creek, located north of Globe.

Click to view Table 5.2-7

Click for Table 5.2-7 Water Quality Exceedences in the Salt River Basin

Click to view Figure 5.2-10

Click for Figure 5.2-10 Salt River Basin Water Quality Conditions

 

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References and Supplemental Reading for the Salt River Basin

Colorado River Central Highlands Planning Area Download entire Central Highlands Planning Area Atlas in pdf Salt River Stream on White Mountain Apache Reservation