South Carolina Code of Regulations › Chapter 61 - DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL › Subchapter 61-58.7 - Operation and Maintenance › Section 61-58.7.C - Surface Water Treatment Plants

Current through Register Vol. 48, No. 6, June 28, 2024
(1) All surface water treatment plants shall
			 have an operator of the appropriate grade present at the plant and responsible
			 for its operation, when the plant is producing water for public
			 consumption.
(2) All enclosed
			 filters shall be opened and inspected per manufacturer's recommendation or as
			 required to ensure proper operation.
(3) All water, chemical and waste lines shall
			 be labeled and color coded to identify line contents and direction of flow (if
			 applicable).
(4) The treatment
			 facility shall be operated such that the Department approved filtration rate is
			 not exceeded at any time, and the pretreatment retention times are not reduced
			 below those times approved by the Department. The treatment facility shall be
			 operated such that hydraulic surges through the filters are minimized during
			 flow rate changes and when filters are removed from service for
			 backwashing.
(5) The use of
			 chemicals for the control of aquatic weeds, algae and water borne organisms in
			 rivers, lakes and reservoirs which are used as a source of water by a public
			 water supply, shall be approved by the Department prior to their use.
(6) Intake screens shall be cleaned as often
			 as is necessary for the proper functioning of the intake station.
(7) All plants shall have an on-site
			 laboratory with the necessary equipment and methodology acceptable to the
			 Department for process control monitoring. If the on-site laboratory is to
			 conduct any analyses for compliance with the monitoring requirements of
			 R.61-58.5, R.61-58.10,
			 R.61-58.11 and R.61-58.13, it must be certified by the Department.
(8) The following analyses shall be conducted
			 as often as necessary, but no less than once a day, to ensure the treatment
			 plant is functioning properly.
(a) Raw water
			 shall be analyzed for pH, alkalinity, temperature, turbidity and total or fecal
			 coliform bacteria.
(b) The
			 coagulated water shall be analyzed for pH and alkalinity. If a pre-disinfectant
			 and/or oxidant is added, the coagulated water shall be analyzed for the
			 disinfectant and/or oxidant.
(c)
			 The settled water shall be analyzed for turbidity and for disinfectant residual
			 if a pre-disinfectant is used. If the pretreatment unit is used as a
			 disinfectant sequence, the disinfectant concentration, pH and water temperature
			 shall be measured in accordance with the requirements of R.61-58.10 for
			 calculating CT values.
(d) The
			 filtered water shall be analyzed for turbidity. If a pre-filter disinfectant is
			 used, the filtered water disinfectant residual shall be measured.
(e) The finished water (water entering
			 distribution system) shall be analyzed for pH, alkalinity, temperature,
			 disinfectant residual, calcium hardness and turbidity.
(f) The system shall analyze for any
			 additional parameter that the Department may require for a specific plant for
			 special concerns.