ERRATA for "Pharmaceuticals, Hormones, and Other Organic Wastewater Contaminants in U.S. Streams, 1999-2000: A National Reconnaissance"; Environmental Science & Technology, v. 36, no. 6, pages 1202-1211:

Shortly after the publication of our stream reconnaissance study, it was discovered that select concentrations for 17a-ethynyl estradiol (EE2) and mestranol, which had been rejected as having potential interferences, were not corrected in the final published database. Seven concentrations of EE2 (ranging from 0.023 to 0.831 mg/L) and four concentrations of mestranol (ranging from 0.034 to 0.197 mg/L) were erroneously published and should have been reported as nondetections. In the initial report, the frequency of detection, maximum concentration, and median detectable concentration for EE2 were reported as 15.7%, 0.831 mg/L, and 0.073 mg/L, respectively (Table 1, p. 1205). Similarly, the frequency of detection, maximum concentration, and median detectable concentration for mestranol were reported as 10.0%, 0.407 mg/L, and 0.074 mg/L, respectively (Table 1, p. 1205). The corrected frequency of detection, maximum concentration, and median detectable concentration are 5.7%, 0.273 mg/L, and 0.094 mg/L respectively for EE2, and 4.3%, 0.407 mg/L and 0.017 mg/L respectively for mestranol. The frequency of detection of reproductive hormones, reported as 40% in the initial report (Figure 4A, p. 1209), has been corrected to 37%. The percent of total measured organic wastewater contaminants, by general use category, reported as 0.88% for reproductive hormones (Figure 4B, p. 1209) in the initial report has been corrected to 0.69%.

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