Fla. Admin. Code Ann. R. 62-303.380 - Drinking Water Use Support and Protection of Human Health
(1) A Class I or Class
I-Treated water shall be placed on the Planning List for potential impairment
of drinking water use support and the protection of human health based on
bacteriological data if:
(a) There is a
sufficient number of E. coli samples from the water segment
that do not meet the applicable Class I or Class I-Treated water quality
criteria for bacteriological quality expressed as a Ten Percent Threshold Value
(TPTV) based on the methodology described in Rule
62-303.320, F.A.C. Data must
meet the requirements of subsections
62-303.320(2), (3),
(4)(e) -(g), (8), and (9), 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) The water segment includes a sampling
location that has one or more monthly geometric mean values above the monthly
geometric mean E.coli criterion during the planning period. To
calculate a monthly geometric mean value 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. Data must meet the requirements of
subsections 62-303.320(2), (3),
(4)(e) -(4)(g), (8), (9), F.A.C. Samples
collected on different days will be assessed as individual samples and samples
collected on the same day shall be averaged.
(2) A Class I or Class I-Treated water shall
be placed on the Planning List for potential impairment of drinking water use
support and the protection of human health based on information provided by
public water systems if a public water system demonstrates to the Department
that either:
(a) Annual treatment costs to
meet applicable drinking water standards have increased by at least 25% to
treat contaminants, blue-green algae, or other nuisance algae in the source
water, or
(b) The system has
changed to an alternative supply because of additional costs that would be
required to treat their surface water source.
(c) When determining increased treatment
costs under paragraph (2)(a) or (2)(b), above, costs due solely to new, more
stringent drinking water requirements, inflation, or increases in costs of
materials shall not be included.
(3) A water shall be placed on the Planning
List for potential impairment of drinking water use support or the protection
of human health if:
(a) For human health-based
criteria expressed as maximums, the water segment does not meet the applicable
criteria based on the methodology described in Rule
62-303.320, F.A.C., or
(b) For human health-based criteria expressed
as annual averages, the annual average concentration for any year of the
assessment period exceeds the criteria. To be used to determine whether a water
should be assessed further for human-health impacts, data must meet the
requirements of subsections (2), (3), (7)(a), (8) and (9), in Rule
62-303.320,
F.A.C.
Notes
Rulemaking Authority 403.061, 403.067 FS. Law Implemented 403.062, 403.067 FS.
New 6-10-02, Amended 12-11-06, 9-4-07, 8-1-13, 2-17-16, 10-17-16.
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