New York Codes, Rules and Regulations › Title 10 - DEPARTMENT OF HEALTH › Chapter I - State Sanitary Code › Part 5 - Drinking Water Supplies › Subpart 5-1 - Public Water Systems › Enhanced Treatment For Cryptosporidium › Section 5-1.80 - Applicability

Current through Register Vol. 46, No. 28, July 10, 2024
The provisions of this section, and sections
						5-1.81 through
						5-1.83  of this Subpart apply to
						all public water systems, as defined in paragraph 5-1.1(cb) of this Subpart,
						supplied by a surface water source(s) or ground water source(s) directly
						influenced by surface water, provided the system serves 15 or more service
						connections or serves 25 or more persons. The requirements in this section for
						filtered systems apply to any system with a surface water or GWUDI source that
						is required to provide filtration, regardless of whether the system is
						currently operating a filtration system. All treatment must comply with the
						requirements of the Microbial Toolbox Components as described in
						40 CFR
						141.715 through
						 40 CFR 141.720. Any unfiltered
						systems that are in compliance with the filtration avoidance criteria in
						section 5-1.30(c)  of this
						Subpart, are subject to the requirements in sections
						5-1.80 through
						5-1.83  of this Subpart pertaining
						to unfiltered systems. Wholesale system compliance with sections
						5-1.81 through
						5-1.83  of this Subpart is based on
						the population of the largest system in the combined distribution system. The
						above systems shall comply with the following requirements:
(a) Systems shall conduct an initial and a
					 second round of source water monitoring for each plant that treats water from a
					 surface water source or ground water source directly influenced by surface
					 water. This monitoring may include Cryptosporidium, E. coli, and turbidity, as
					 described in section
					 5-1.81(a) through
					 (d)  of this Subpart, to determine what level,
					 if any, of additional Cryptosporidium treatment shall be provided.
					 Cryptosporidium monitoring shall be done using an approved method. The
					 following method modifications must also be followed:
(1) samples must be at least 10 liters (L) or
					 a packed pellet volume of at least 2 milliliters (mL) must be used. If a 10 L
					 sample cannot be processed, as much sample volume as can be filtered by two
					 filters, as described in
					 40 CFR
					 141.704(a)(1), must be
					 processed, up to a packed pellet volume of at least 2 mL;
(2) the method-required matrix spike (MS)
					 samples must be spiked and filtered by a laboratory certified for the
					 method;
(3) if the volume of the MS
					 is greater than 10 L, the volume greater than 10 L may be filtered in the
					 field, and the filtered sample may be shipped with the 10 L sample to the
					 laboratory where the 10 L sample is spiked and filtered through the filter that
					 was used to collect the balance of the sample in the field;
(4) flow cytometer-counted spiking
					 suspensions must be used for MS samples and ongoing precision and recovery
					 samples.