Florida Administrative Code › 62 - DEPARTMENT OF ENVIRONMENTAL PROTECTION › 62 - Departmental › Chapter 62-555 - PERMITTING, CONSTRUCTION, OPERATION, AND MAINTENANCE OF PUBLIC WATER SYSTEMS › Section 62-555.350 - Operation and Maintenance of Public Water Systems

Current through Reg. 50, No. 138; July 16, 2024
(1)
				Suppliers of water shall operate and maintain their public water systems so as
				to comply with applicable standards in Chapter 62-550, F.A.C., and requirements
				in this chapter.
(2) Suppliers of
				water shall keep all necessary public water system components in operation and
				shall maintain such components in good operating condition so the components
				function as intended. Preventive maintenance on electrical or mechanical
				equipment - including exercising of auxiliary power sources, checking the
				calibration of finished-drinking-water meters at treatment plants, testing of
				air or pressure relief valves for hydropneumatic tanks, and exercising of
				isolation valves - shall be performed in accordance with the equipment
				manufacturer's recommendations or in accordance with a written preventive
				maintenance program established by the supplier of water; however, in no case
				shall auxiliary power sources be run under load less frequently than monthly.
				Accumulated sludge and biogrowths shall be cleaned routinely (i.e., at least
				annually) from all treatment facilities that are in contact with raw, partially
				treated, or finished drinking water and that are not specifically designed to
				collect sludge or support a biogrowth; and blistering, chipped, or cracked
				coatings and linings on treatment or storage facilities in contact with raw,
				partially treated, or finished drinking water shall be rehabilitated or
				repaired. Finished-drinking-water storage tanks, including conventional
				hydropneumatic tanks with an access manhole but excluding bladder- or
				diaphragm-type hydropneumatic tanks without an access manhole, shall be checked
				at least annually to ensure that hatches are closed and screens are in place;
				shall be cleaned at least once every five years to remove biogrowths, calcium
				or iron/manganese deposits, and sludge from inside the tanks; and shall be
				inspected for structural and coating integrity at least once every five years
				by personnel under the responsible charge of a professional engineer licensed
				in Florida. Dead-end water mains conveying finished drinking water shall be
				flushed quarterly or in accordance with a written flushing program established
				by the supplier of water; additionally, dead-end or other water mains conveying
				finished water shall be flushed as necessary whenever legitimate water quality
				complaints are received.
(3)
				Suppliers of water shall ensure that drinking water treatment chemicals conform
				to the standards referenced in paragraph
				 62-555.320(3)(a),
				F.A.C., and shall have their lead/chief water treatment plant operators certify
				in writing on the monthly operation reports required under subsection (12),
				below, that drinking water treatment chemicals conform to the standards
				referenced in paragraph
				 62-555.320(3)(a),
				F.A.C. Lead/chief water treatment plant operators may base their certifications
				upon evaluations conducted by the supplier of water or upon third-party or
				manufacturer certifications.
(4) No
				supplier of water shall operate any drinking water treatment plant at a
				capacity greater than the plant's permitted operating capacity except with the
				Department's prior approval, which shall be given when such operation will not
				cause a violation of a maximum contaminant level, a treatment technique
				requirement, or other operating requirements and is for no more than three
				months, or under circumstances that the supplier of water documents as highly
				unusual and nonrecurring. The permitted operating capacity of each plant shall
				be as specified in the latest Department of Environmental Protection (DEP)
				construction permit concerning source water or treatment facilities for the
				plant. In cases where no permitted operating capacity has been specified in the
				latest DEP construction permit concerning source water or treatment facilities
				for a plant, the Department shall establish the permitted maximum-day operating
				capacity of the plant and, if the plant is designed to meet peak water demand
				or to supplement finished-water storage facilities in meeting peak water
				demand, the permitted peak operating capacity of the plant based upon
				information that is included in or with pertinent permit applications or that
				is provided by the supplier of water and based upon design requirements in part
				III of this chapter, including design requirements in the engineering
				references listed in Rule
				 62-555.330, F.A.C. Each day that
				a supplier of water is required under Chapter 62-699, F.A.C., to have a
				licensed operator staff or visit a plant, the supplier of water shall measure
				and record in the logs and reports required under subsection (12), below, the
				net quantity of finished drinking water, excluding any filter backwash water,
				produced by the plant.
(5)
				Suppliers of water who are using ground water not under the direct influence of
				surface water and who are required to provide treatment to reliably achieve at
				least four-log inactivation or removal of viruses in accordance with paragraph
				 62-555.320(12)(b),
				F.A.C., shall monitor, record, and maintain the effectiveness and reliability
				of disinfection treatment as described in paragraphs (a) through (c), below.
				The residual disinfectant, temperature, or pH measurements required under
				paragraph (a) or (b), may be performed by any authorized representative of the
				supplier of water; but field measurements of residual chlorine, temperature,
				and pH shall be performed following the appropriate procedures in the
				Department of Environmental Protection Standard Operating Procedures for Field
				Activities, DEP-SOP-001/01, as incorporated into Rule
				 62-160.800, F.A.C., and all
				other measurements shall be performed using an appropriate method referenced in
				subsection  62-550.550(1),
				F.A.C., or in
Standard Methods for the Examination of Water and
				Wastewater
as adopted in Rule
				 62-555.335, F.A.C.
(a) For each day a supplier of water serving
				3, 300 or more persons serves water to the public from a drinking water
				treatment plant that includes chemical disinfection for virus inactivation, the
				supplier of water shall continuously monitor the residual disinfectant
				concentration (C) before or at the first customer and shall record in the logs
				and reports required under subsection (12), below, the lowest C measured before
				or at the first customer during peak flow, the corresponding disinfectant
				contact time (T) at the C monitoring point during peak flow, and the resulting
				lowest CT provided before or at the first customer during peak flow. In
				addition, at least once for each day the supplier of water serves water to the
				public from the plant, the supplier of water shall measure and record the
				temperature of the water at the point where C is monitored; shall measure and
				record the pH of the water at the point where C is monitored if free chlorine
				is being used for virus inactivation; and with this temperature and pH
				information, shall determine and record the minimum CT required to comply with
				paragraph  62-555.320(12)(b),
				F.A.C. If there is a failure of equipment used to continuously monitor C, the
				supplier of water may temporarily monitor C by taking grab samples every four
				hours but may do so for no more than one week following the equipment failure.
				If at any time the "CT provided" falls below the minimum CT required, the
				supplier of water shall increase the disinfectant dose until the "CT provided"
				is at least equal to the minimum CT required and shall notify the Department in
				accordance with subsection (10), below.
(b) For each day a supplier of water serving
				less than 3, 300 persons serves water to the public from a drinking water
				treatment plant that includes chemical disinfection for virus inactivation, the
				supplier of water shall monitor the residual disinfectant concentration (C)
				before or at the first customer by taking at least one grab sample during peak
				flow and shall record in the logs and reports required under subsection (12),
				below, the lowest C measured before or at the first customer during peak flow,
				the corresponding disinfectant contact time (T) at the C monitoring point
				during peak flow, and the resulting CT provided before or at the first customer
				during peak flow. In addition, at least once for each day the supplier of water
				serves water to the public from the plant, the supplier of water shall measure
				and record the temperature of the water at the point where C is monitored;
				shall measure and record the pH of the water at the point where C is monitored
				if free chlorine is being used for virus inactivation; and with this
				temperature and pH information, shall determine and record the minimum CT
				required to comply with paragraph
				 62-555.320(12)(b),
				F.A.C. If any measurement of the "CT provided" falls below the minimum CT
				required, the supplier of water shall increase the disinfectant dose and take
				follow-up grab samples at least every four hours until the "CT provided" is at
				least equal to the minimum CT required and shall notify the Department in
				accordance with subsection (10), below.
(c) For each day a supplier of water serves
				water to the public from a drinking water treatment plant that includes
				ultraviolet (UV) disinfection for virus inactivation, the supplier of water
				shall continuously monitor the operating UV dose and shall record in the logs
				and reports required under subsection (12), below, the lowest operating UV dose
				measured. If at any time the operating UV dose falls below the minimum UV dose
				required to comply with paragraph
				 62-555.320(12)(b),
				F.A.C., the supplier of water shall clean the UV lamp sleeves or replace the UV
				lamps to restore the operating UV dose to a level at least equal to the
				required minimum UV dose and shall notify the Department in accordance with
				subsection (10), below.