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Occurrence of Selected Volatile Organic Compounds and Soluble Pesticides in Texas Public Water-Supply Source Waters, 1999–2001

By B.J. Mahler, M.G. Canova, and M.O. Gary

Fact Sheet 020-02

In cooperation with Texas Natural Resource Conservation Commission


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Contents

Surface-Water Findings

Ground-Water Findings

Volatile Organic Compounds

Soluble Pesticides

Tritium and Nitrate

Site Selection and Sample Collection

References Cited

Figures

  1. Locations of public water-supply reservoirs and wells sampled for VOCs. Sites with one or more detections shown in red, sites with no detections shown in green.
  2. The percentage of samples in public water-supply reservoirs and wells with one or more VOC detections are shown as pie graphs. The range of concentrations in samples with detections are shown as boxplots.
  3. Locations of public water-supply reservoirs and wells sampled for pesticides. Sites with one or more detections shown in red, sites with no detections shown in green.
  4. The percentage of samples in public water-supply reservoirs and wells with one or more pesticide detections are shown as pie graphs. The range of concentrations in samples with detections are shown as boxplots.

Table

  1. VOC concentrations in four reservoirs sampled before and after the Fourth of July weekend, 1999



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