North Dakota Administrative Code › Title 33.1 - Department of Environmental Quality › Article 33.1-17 - Public Water Supply Systems › Chapter 33.1-17-01 - Public Water Supply Systems in North Dakota › Section 33.1-17-01-09 - Filtration and disinfection treatment sampling and monitoring requirements

Current through Supplement No. 393, July, 2024
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.