Sites with parameter concentrations that have equaled or exceeded drinking water standard(s) (DWS), including location and parameter(s) are shown in Table 4.4-5A. There are no impaired lakes or streams in this basin. Figure 4.4-9 shows the location of exceedences keyed to Table 4.4-5A. 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)
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Thirty-one sites have parameter concentrations that have equaled or exceeded DWS.
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Frequently equaled or exceeded parameters include fluoride and radionuclides
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Other parameters commonly equaled or exceeded in the sites measured in this basin were antimony, chromium, lead and nitrates.
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Click to view Table 4.4-5 Water Quality Exceedences in the Hualapai Valley Basin
Click to view Figure 4.4-9 Hualapai Valley Basin Water Quality Conditions
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