Florida Regulations 62-303.480: Drinking Water Use Support and Protection of Human Health
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If the water segment was listed on the Planning List due to exceedances of a human health-based water quality criterion, the Department shall re-evaluate the data using the methodology in subsections 62-303.380(1) and (3), F.A.C., and limit the analysis to data collected within 7.5 years of the time the water segment is proposed for listing on the Verified List. Data older than 7.5 years shall be used if it is demonstrated to be representative of current conditions. Any determinations to use older data shall be documented by the Department, and the documentation shall provide the basis for the decision that the data are representative of current conditions. For this analysis, the Department shall exclude any data meeting the requirements of subsection 62-303.420(5), F.A.C. The following water segments shall be listed on the Verified List:
(1) For human health-based criteria expressed as maximums, water segments that meet the requirements in subsection 62-303.420(6), F.A.C., or
(2) For human health-based criteria expressed as annual averages, water segments that have an annual average that exceeds the applicable criterion. To calculate an annual average for the Verified List assessment, there shall be at least three samples per year, with samples from at least three different quarters of the same year.
(3) For bacteriological water quality criteria, water segments shall be verified as impaired if, following review of the available data as described in subsections 62-303.460(2) and (5), F.A.C.:
(a) The number of months that do not meet the applicable bacteriological water quality criteria expressed as a TPTV meet the requirements in subsection 62-303.420(6), F.A.C. Data must meet the data requirements of subsections 62-303.320(2), (3), (4)(e)-(4)(g), and (8), F.A.C. Samples collected on different days will be assessed as individual samples and samples collected on the same day shall be averaged, or
(b) There are one or more exceedances of a bacteriological water quality criterion expressed as a monthly geometric mean during the verified period. To assess the monthly data for a sampling location there shall be at least five samples collected within that month, with at least one sample from each full week of the month.
Rulemaking Authority 403.061, 403.067 FS. Law Implemented 403.062, 403.067 FS. History-New 6-10-02, Amended 12-11-06, 9-4-07, 8-1-13, 2-17-16, 10-17-16.
(2) For human health-based criteria expressed as annual averages, water segments that have an annual average that exceeds the applicable criterion. To calculate an annual average for the Verified List assessment, there shall be at least three samples per year, with samples from at least three different quarters of the same year.
(3) For bacteriological water quality criteria, water segments shall be verified as impaired if, following review of the available data as described in subsections 62-303.460(2) and (5), F.A.C.:
(a) The number of months that do not meet the applicable bacteriological water quality criteria expressed as a TPTV meet the requirements in subsection 62-303.420(6), F.A.C. Data must meet the data requirements of subsections 62-303.320(2), (3), (4)(e)-(4)(g), and (8), F.A.C. Samples collected on different days will be assessed as individual samples and samples collected on the same day shall be averaged, or
(b) There are one or more exceedances of a bacteriological water quality criterion expressed as a monthly geometric mean during the verified period. To assess the monthly data for a sampling location there shall be at least five samples collected within that month, with at least one sample from each full week of the month.
Rulemaking Authority 403.061, 403.067 FS. Law Implemented 403.062, 403.067 FS. History-New 6-10-02, Amended 12-11-06, 9-4-07, 8-1-13, 2-17-16, 10-17-16.