Filtration and disinfection treatment sampling and monitoring requirements

1. Coverage. All subpart H systems shall conduct monitoring to determine compliance with the treatment technique requirements for filtration and disinfection. 2. Systems utilizing surface water sources. All subpart H systems that utilize surface water sources shall comply with the turbidity and residual disinfectant concentration sampling and monitoring requirements set forth under title 40 Code of Federal Regulations part 141, subpart H. Those systems serving ten thousand or more persons shall also comply with the disinfection profiling and benchmarking requirements set forth under title 40 Code of Federal Regulations part 141, subpart P. Those systems that serve ten thousand or more persons and provide conventional filtration treatment or direct filtration shall also comply with the individual filter sampling and monitoring requirements set forth under title 40 Code of Federal Regulations part 141, subpart P. Those systems serving fewer than ten thousand persons shall also comply with the requirements set forth under title 40 Code of Federal Regulations part 141, subpart T and the Federal Register volume 69, number 124, Tuesday, June 29, 2004, pages 38850-38857. 3. Systems utilizing ground water sources under the direct influence of surface water. The following sampling and monitoring requirements apply to subpart H systems that utilize ground water sources deemed by the department to be under the direct influence of surface water: a. All systems that provide filtration treatment shall comply with the turbidity and residual disinfectant concentration sampling and monitoring requirements set forth under title 40 Code of Federal Regulations part 141, subpart H. Those systems serving ten thousand or more persons shall also comply with the disinfection profiling and benchmarking requirements set forth under title 40 Code of Federal Regulations part 141, subpart P. Those systems that serve ten thousand or more persons and provide conventional filtration treatment or direct filtration shall also comply with the individual filter sampling and monitoring requirements set forth under title 40 Code of Federal Regulations part 141, subpart P. Those systems serving fewer than ten thousand persons shall also comply with the requirements set forth under title 40 Code of Federal Regulations part 141, subpart T and the Federal Register volume 69, number 124, Tuesday, June 29, 2004, pages 38850-38857. b. All systems that do not provide filtration treatment shall comply with the filtration avoidance criteria and applicable disinfection sampling and monitoring requirements set forth under title 40 Code of Federal Regulations part 141, subpart H. Those systems serving ten thousand or more persons shall also comply with the disinfection profiling and benchmarking requirements and the filtration avoidance criteria set forth under title 40 Code of Federal Regulations part 141, subpart P. Those systems serving fewer than ten thousand persons shall also comply with the requirements set forth under title 40 Code of Federal Regulations part 141, subpart T and the Federal Register volume 69, number 124, Tuesday, June 29, 2004, pages 38850-38857. 4. Recycle provisions. All subpart H systems that utilize conventional filtration or direct filtration treatment and that recycle spent filter backwash water, thickener supernatant, or liquids from dewatering processes must meet the requirements as prescribed by the department and set forth under title 40 Code of Federal Regulations part 141.76, subpart H. 5. Enhanced treatment for cryptosporidium. All public water systems that utilize a surface water source or a ground water source under the direct influence of surface water shall meet the treatment technique requirements for cryptosporidium set forth under title 40 Code of Federal Regulations part 141, subpart W. These requirements are in addition to requirements found in title 40 Code of Federal Regulations part 141, subparts H, P, and T.