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 7.10-5A. There are no impaired lakes or streams in this basin. Figure 7.10-9 shows the location of water quality occurrences keyed to Table 7.10-5. 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 7.10-5A.
- Six wells have parameter concentrations that have equaled or exceeded drinking water standards.
- The parameter for fluoride was equaled or exceeded in all wells. Other parameters equaled or exceeded include arsenic and lead.
Table 7.10-5 Water Quality Exceedences in the Western Mexican Drainage Basin
Figure 7.10-9 Western Mexican Drainage Basin Water Quality Conditions