Microbial Quality of the Nation’s Ground-Water Resources, 1993

Scientific Investigations Report 2006–5290

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5290

Figure - refer to figure caption for alternative text description

Figure 17. Detections of total-coliform bacteria with concentrations of dissolved oxygen, nitrite-plus-nitrate nitrogen, and orthophosphate in samples collected from wells in 22 study units of the National Water-Quality Assessment program, 1993–2004.

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