Rule 62-699.200, F.A.C., is being added to define words, phrases, and terms used in Chapter 62-699, F.A.C.,. Rule 62-699.310, F.A.C., is being amended to add classification and staffing requirements for water distribution systems; to clarify, change, and expand the list of treatment processes included under the various categories of domestic wastewater or water treatment plants; to increase staffing from ½ hour/day to 1 hour/day for Category I, Class C, wastewater treatment plants with a capacity less than 0.05 million gallons per day (MGD); to specify that the cumulative time spent each week visiting a Category III, Class C, water treatment plant with a capacity less than 0.25 MGD shall be equal to an average of at least 0.3 hour per visit; to specify that the cumulative time spent each week visiting a Category IV, Class C or D, water treatment plant with a capacity less than 1.0 MGD shall be equal to an average of at least 0.2 hour per visit; and to specify that the cumulative time spent each week visiting a Category V, Class C or D, water treatment plant with a capacity less than 3.0 MGD shall be equal to an average of at least 0.1 hour per visit. Rule 62-699.311, F.A.C., is being amended to add classification and staffing requirements for water distribution systems; to clarify what the daily check of a treatment plant shall include; to allow Class D treatment plant operators to be the lead/chief operator of up to five water or domestic wastewater treatment plants if the plants are under the same ownership; to establish approval criteria governing staffing reductions for treatment plants under an electronic surveillance system, automatic control system, or electronic control system; to establish approval criteria governing staffing reductions for treatment plants operating at less than permitted capacity; to establish approval criteria governing staffing reductions for multiple Category V water treatment plants connected to the same distribution system; to allow the Department to require increased staffing where necessary to ensure compliance; to require that Class C treatment plants be visited by their lead/chief operator at least twice per month and that Class D treatment plants be visited by their lead/chief operator at least once per month; and to allow for weekend visits to be interchanged with weekday staffing at treatment plants that have greater flow or production on weekends than on weekdays.