Utah Admin. Code R392-303-26 - Geothermal Pool Water Bacteriological Quality
(1) The local health officer shall:
(a) collect routine bacteriological samples
of the pool water at least once per month and at least two weeks apart, and
collect additional samples for investigative purposes or as a follow-up of
unsatisfactory samples, if necessary;
(b) choose or approve the dates and times
that the samples are collected based on when a representative level of bacteria
would likely be found;
(c) submit
the bacteriological samples to a laboratory approved by Rule R444-14 to perform
E. coli or fecal coliform testing; and
(d) have the laboratory analyze the sample
for either E. coli or fecal coliform and request that the laboratory report
sample results within five working days to the local health department and the
operator.
(2) The
operator shall review the laboratory results and take corrective action if the
following standards are not met:
(a) if the
E. coli or fecal coliform levels are found to be greater than the maximum level
of 63 CFU per 50 milliliters, the operator shall close the geothermal pool
until sample results show the level is below 63 CFU;
(b) If the results of any three of the last
five E. Coli or fecal coliform samples taken from the geothermal pool exceed 63
CFU per 50 milliliters, the operator shall:
(i) increase the rate of flow-through;
(ii) reduce bather load as
provided in Subsection
R392-303-9(2);
or
(iii) both increase the flow
rate and reduce the bather load.
(3) The operator shall make adjustments as
specified in Subsection (2)(b) until the lab report specified in Subsection
(1)(d) consistently shows E. Coli or fecal coliform results of less than 63 CFU
per 50 milliliters in collected samples.
(4) As an alternative to closing the
geothermal pool until sample results show acceptable bacteriological levels,
the operator may temporarily close the pool and commence feeding a disinfectant
to the pool water, meeting the requirements of Subsection
R392-303-23(2)
and the disinfectant concentration and pH requirements of Section
R392-302-27, and then reopen the
pool at least 45 minutes after the required disinfectant level has been
achieved.
(5) The disinfectant
feeding to the geothermal pool must continue until pool water samples and the
source water samples pass the bacteriological standards required for
disinfected pools in Subsection
R392-302-27(6)(d).
(6) the operator shall post the reported
level as required in Subsection R392-303-29(2).
Notes
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