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Securing Arizona's Water Future

Santa Cruz AMA Water Quality

Sites with parameter concentrations that have equaled or exceeded drinking water standard(s) (DWS), including location and parameter(s) are shown in Table 8.4-7A.  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  8.4-7B.  Figure 8.4-9 shows the location of water quality occurrences keyed to Table 8.4-7.  Figure 8.4-10 shows the located of contamination sites in the Santa Cruz AMA with site information in Table 8.4-8.  A description of water quality data sources and methods is found in Volume 1, Appendix A.  Not all parameters were measured at all sites; selective sampling for particular constituents is common.

Well, mine and spring sites that have equaled or exceeded drinking water standards (DWS)

  • Refer to Table 8.4-7A.
  • Forty-four sites have parameter concentrations that have equaled or exceeded DWS.
  • The most frequently equaled or exceeded parameters are organics and arsenic.
  • Other parameters equaled or exceeded include mercury, fluoride, lead, radionuclides, selenium and nitrates.

Lakes and Streams with impaired waters

  • Refer to Table 8.4-7B.
  • Water quality standards were equaled or exceeded in three stream reaches and one lake.  The parameters most commonly equaled or exceeded were copper and E. coli.
  • One reach, Three R Canyon - headwaters to ephemeral segment, and one lake, Pena Blanca Lake, are part of the ADEQ water quality improvement effort called the Total Maximum Daily Load (TMDL) Program.  The final TMDL document has been completed for both.

Effluent Dependent Reaches

  • Refer to Figure 8.4-9
  • A portion of the Santa Cruz River in this AMA is effluent dependent.

Contamination Sites

Click here for Table 8.4-7

Table 8.4-7 Water Quality Exceedences in the Santa Cruz AMA

Click here for Table 8.4-8

Table 8.4-8 Contamination Sites in the Santa Cruz AMA

Click here for Figure 8.4-9

Figure 8.4-9 Santa Cruz AMA Water Quality Conditions

Click here for Figure 8.4-10

Figure 8.4-10 Santa Cruz AMA Contamination Sites

 

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