Haw. Code R. § 11-20-50

Current through September, 2024

Section 11-20-50 - Ground Water Rule

(a) General requirements and applicability.

(1) Scope of this section. The requirements of this section constitute National Primary Drinking Water Regulations.

(2) Applicability. This section applies to all public water systems that use ground water except that it does not apply to public water systems that combine all of their ground water with surface water or with ground water under the direct influence of surface water prior to treatment under section 11-20-46. For the purposes of this section, "ground water system" is defined as any public water system meeting this applicability statement, including consecutive systems receiving finished ground water.

(3) General requirements. Systems subject to this section must comply with the following requirements:

(A) Sanitary survey information requirements for all ground water systems as described in subsection (b).

(B) Microbial source water monitoring requirements for ground water systems that do not treat all of their ground water to at least 99.99 percent (4-log) treatment of viruses (using inactivation, removal, or a state-approved combination of 4-log virus inactivation and removal) before or at the first customer as described in subsection (c).

(C) Treatment technique requirements, described in subsection (d), that apply to ground water systems that have fecally contaminated source waters, as determined by source water monitoring conducted under subsection (c), or that have significant deficiencies that are identified by the State or that are identified by EPA under SDWA section 1445. A ground water system with fecally contaminated source water or with significant deficiencies subject to the treatment technique requirements of this section must implement one or more of the following corrective action options: correct all significant deficiencies; provide an alternative source of water; eliminate the source of contamination; or provide treatment that reliably achieves at least 4-log treatment of viruses (using inactivation, removal, or a state-approved combination of 4-log virus inactivation and removal) before or at the first customer.

(D) Ground water systems that provide at least 4-log treatment of viruses (using inactivation, removal, or a State-approved combination of 4-log virus inactivation and removal) before or at the first customer are required to conduct compliance monitoring to demonstrate treatment effectiveness, as described in subsection (d)(2).

(E) If requested by the State, ground water systems must provide the State with any existing information that will enable the State to perform a hydrogeologic sensitivity assessment. For the purposes of this section, "hydrogeologic sensitivity assessment" is a determination of whether ground water systems obtain water from hydrogeologically sensitive settings.

(4) Compliance date. Ground water systems must comply, unless otherwise noted, with the requirements of this section beginning December 1, 2009.

(b) Sanitary surveys for ground water systems.

(1) Ground water systems must provide the State, at the State's request, any existing information that will enable the State to conduct a sanitary survey.

(2) For the purposes of this section, a 'sanitary survey," as conducted by the State, includes but is not limited to, an onsite review of the water source(s)(identifying sources of contamination by using results of source water assessments or other relevant information where available), facilities, equipment, operation, maintenance, and monitoring compliance of a public water system to evaluate the adequacy of the system, its sources and operations and the distribution of safe drinking water.

(3) The sanitary survey must include an evaluation of the following applicable components:

(A) Source,

(B) Treatment,

(C) Distribution system,

(D) Finished water storage,

(E) Pumps, pump facilities, and controls,

(F) Monitoring, reporting, and data verification,

(G) System management and operation, and

(H) Operator compliance with chapter 11-25.

(c) Ground water source microbial monitoring and analytical methods.

(1) Triggered source water monitoring.

(A) General requirements. A ground water system must conduct triggered source water monitoring if the following conditions are identified and exist:

(i) The system does not provide at least 4-log treatment of viruses (using inactivation, removal, or a state-approved combination of inactivation and removal) before or at the first customer for each ground water source; and

(ii) The system is notified that a sample collected under section 11-20-9.1(d) is total coliform-positive and the sample is not invalidated under section 11-20-9.1(c)(3) beginning April 1, 2016.

(B) Sampling requirements. A ground water system must collect, within 24 hours of notification of the total coliform-positive sample, at least one ground water source sample from each ground water source in use at the time the total coliform-positive sample was collected under section 11-20-9.1(d) beginning April 1, 2016, except as provided in clause (ii).

(i) The State may extend the 24-hour time limit on a case-by-case basis if the system cannot collect the ground water source water sample within 24 hours due to circumstances beyond its control. In the case of an extension, the State must specify how much time the system has to collect the sample.

(ii) If approved by the State, systems with more than one ground water source may meet the requirements of this subparagraph by sampling a representative ground water source or sources. If directed by the State, systems must submit for State approval a triggered source water monitoring plan that identifies one or more ground water sources that are representative of each monitoring site in the system's sample siting plan under section 11-20-9.1(c) beginning April 1, 2016, and that the system intends to use for representative sampling under this paragraph.

(iii) Beginning April 1, 2016, a ground water system serving 1,000 people or fewer may use a repeat sample collected from a ground water source to meet both the requirements of section 11-20-9.1 and to satisfy the monitoring requirements of this subparagraph for that ground water source. If the repeat sample collected from the ground water source is E. coli positive, the system must comply with paragraph (1)(C).

(C) Additional requirements. If the State does not require corrective action under subsection (d)(1)(B) for an E. coli-positive source water sample collected under subparagraph (B) that is not invalidated under paragraph (4), the system must collect five additional source water samples from the same source within 24 hours of being notified of the E. coli-positive sample.

(D) Consecutive and Wholesale Systems.

(i) In addition to the other requirements of this paragraph, a consecutive ground water system that has a total coliform-positive sample collected under section 11-20-9.1(d) beginning April 1, 2016, must notify the wholesale system(s) within 24 hours of being notified of the total coliform-positive sample.

(ii) In addition to the other requirements of this paragraph, a wholesale ground water system that receives notice from a consecutive system it serves that a sample collected under section 11-20-9.1(d) beginning April 1, 2016, is total coliform-positive must, within 24 hours of being notified, collect a sample from its ground water source(s) under subparagraph (B) and analyze it for E. coli under paragraph (3). If the collected source water sample is E. coli-positive, the wholesale ground water system must notify all consecutive systems served by that ground water source of the E. coli source water positive within 24 hours of being notified of the ground water source sampling monitoring result and must meet the requirements of subparagraph (C).

(E) Exceptions to the Triggered Source Water Monitoring Requirements. A ground water system is not required to comply with the source water monitoring requirements of paragraph (1) if either of the following conditions exists:

(i) The State determines, and documents in writing, that the total coliform-positive sample collected under section 11-20-9.1(d) beginning April 1, 2016, is caused by a distribution system deficiency; or

(ii) The total coliform-positive sample collected under section 11-20-9.1(d) beginning April 1, 2016, is collected at a location that meets State criteria for distribution system conditions that will cause total coliform-positive samples.

(2) Assessment Source Water Monitoring. If directed by the State, ground water systems must conduct assessment source water monitoring that meets state-determined requirements for such monitoring. A ground water system conducting assessment source water monitoring may use a triggered source water sample collected under paragraph (1)(B) to meet the requirements of this paragraph. State-determined assessment source water monitoring requirements may include:

(A) Collection of a total of 12 ground water source samples that represent each month the system provides ground water to the public,

(B) Collection of samples from each well unless the system obtains written state approval to conduct monitoring at one or more wells within the ground water system that are representative of multiple wells used by that system and that draw water from the same hydrogeologic setting,

(C) Collection of a standard sample volume of at least 100 mL for E. coli analysis regardless of the analytical method used,

(D) Analysis of all ground water source samples using one of the analytical methods listed in paragraph (3)(B) for the presence of E. coli,

(E) Collection of ground water source samples at a location prior to any treatment of the ground water source unless the State approves a sampling location after treatment, and

(F) Collection of ground water source samples at the well itself unless the system's configuration does not allow for sampling at the well itself and the State approves an alternative sampling location that is representative of the water quality of that well.

(3) Analytical methods.

(A) A ground water system subject to the source water monitoring requirements of paragraph (1) must collect a standard sample volume of at least 100 mL for E. coli analysis regardless of the analytical method used.

(B) A ground water system must analyze all ground water source samples collected under paragraph (1) using one of the analytical methods listed in the following table for the presence of E. coli or one of the alternative methods listed in Appendix A to Subpart C, 40 C.F.R. Part 141:

Analytical Methods for Source Water Monitoring
Fecal indicator1	Methodology	Method citation
E. coli	Colilert3	9223 B.2
	Colisure3	9223 B.2
	Membrane Filter Method with MI Agar	EPA Method 1604.4
	m-ColiBlue24 Test5
	E*Colite Test6
	EC-MUG7
	NA-MUG7	9221 F.2
		9221 G.2

Analyses must be conducted in accordance with the documents listed below. The Director of the Federal Register approves the incorporation by reference of the documents listed in footnotes 2-7 in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies of the documents may be obtained from the sources listed below. Copies may be inspected at EPA's Drinking Water Docket, EPA West, 1301 Constitution Avenue, NW., EPA West, Room B102, Washington DC 20460 (Telephone: 202-566-2426); or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.

¹ The time from sample collection to initiation of analysis may not exceed 30 hours. The ground water system is encouraged but is not required to hold samples below 10°C during transit.

² Methods are described in Standard Methods for the Examination of Water and Wastewater 20th edition (1998) and copies may be obtained from the American Public Health Association, 1015 Fifteenth Street, NW., Washington, DC 20005-2605.

³ Medium is available through IDEXX Laboratories, Inc., One IDEXX Drive, Westbrook, Maine 04092.

⁴ EPA Method 1604: Total Coliforms and Escherichia coli in Water by Membrane Filtration Using a Simultaneous Detection Technique (MI Medium); September 2002, EPA 821-R-02-024. Method is available at http://www.epa.gov/nerlcwww/1604sp02.pdf or from EPA's Water Resource Center (RC-4100T), 1200 Pennsylvania Avenue, NW., Washington, DC 20460.

⁵ A description of the m-ColiBlue24 Test, "Total Coliforms and E. coli Membrane Filtration Method with m-ColiBlue24® Broth," Method No. 10029 Revision 2, August 17, 1999, is available from Hach Company, 100 Dayton Ave., Ames, IA 50010 or from EPA's Water Resource Center (RC-4100T), 1200 Pennsylvania Avenue, NW., Washington, DC 20460.

⁶ A description of the E*Colite Test, "Charm E*Colite Presence/Absence Test for Detection and Identification of Coliform Bacteria and Escherichia coli in Drinking Water, January 9, 1998, is available from Charm Sciences, Inc., 659 Andover St., Lawrence, MA 01843-1032 or from EPA's Water Resource Center (RC-4100T), 1200 Pennsylvania Avenue, NW., Washington, DC 20460.

⁷ EC-MUG (Method 9221F) or NA-MUG (Method 9222G) can be used for E. coli testing step as described in section 11-20-9(h)(6)(A) or section 11-20-9(h)(6)(B) after use of Standard Methods 9221 B, 9221 D, 9222 B or 9222 C.

(4) Invalidation of an E. coli-positive ground water source sample.

(A) A ground water system may obtain State invalidation of an E. coli-positive ground water source sample collected under paragraph (1) only under the following conditions:

(i) The system provides the State with written notice from the laboratory that improper sample analysis occurred; or

(ii) The State determines and documents in writing that there is substantial evidence that an E. coli-positive ground water source sample is not related to source water quality.

(B) If the State invalidates an E. coli-positive ground water source sample, the ground water system must collect another source water sample under paragraph (1) within 24 hours of being notified by the State of its invalidation decision and have it analyzed for the E. coli using the analytical methods in paragraph (3). The State may extend the 24-hour time limit on a case-by-case basis if the system cannot collect the source water sample within 24 hours due to circumstances beyond its control. In the case of an extension, the State must specify how much time the system has to collect the sample.

(5) Sampling location.

(A) Any ground water source sample required under paragraph (1) must be collected at a location prior to any treatment of the ground water source unless the State approves a sampling location after treatment.

(B) If the system's configuration does not allow for sampling at the well itself, the system may collect a sample at a state-approved location to meet the requirements of paragraph (1) if the sample is representative of the water quality of that well.

(6) New Sources. If directed by the State, a ground water system that places a new ground water source into service after November 30, 2009, must conduct assessment source water monitoring under paragraph (2). If directed by the State, the system must begin monitoring before the ground water source is used to provide water to the public.

(7) Public Notification. A ground water system with a ground water source sample collected under paragraph (1) or paragraph (2) that is E. coli-positive and that is not invalidated under paragraph (4), including consecutive systems served by the ground water source, must conduct public notification under section 11-20-18(b).

(8) Monitoring Violations. Failure to meet the requirements of paragraphs (1) through (6) is a monitoring violation and requires the ground water system to provide public notification under section 11-20-18(d).

(d) Treatment technique requirements for ground water systems.

(1) Ground water systems with significant deficiencies or source water fecal contamination.

(A) The treatment technique requirements of this section must be met by ground water systems when a significant deficiency is identified or when a ground water source sample collected under subsection (c)(1)(C) is E. coli-positive.

(B) If directed by the State, a ground water system with a ground water source sample collected under subsections (c)(1)(B), (c)(1)(D), or (c)(2) that is E. coli-positive must comply with the treatment technique requirements of this section.

(C) When a significant deficiency is identified at a system regulated under section 11-20-46 that uses both ground water and surface water or ground water under the direct influence of surface water, the system must comply with provisions of this subsection except in cases where the State determines that the significant deficiency is in a portion of the distribution system that is served solely by surface water or ground water under the direct influence of surface water.

(D) Unless the State directs the ground water system to implement a specific corrective action, the ground water system must consult with the State regarding the appropriate corrective action within 30 days of receiving written notice from the State of a significant deficiency, written notice from a laboratory that a ground water source sample collected under subsection (c)(1)(C) was found to be E. coli-positive, or direction from the State that an E. coli-positive sample collected under subsections (c)(1)(B), (c)(1)(D), or (c)(2) requires corrective action. For the purposes of this section, significant deficiencies include, but are not limited to, defects in design, operation, or maintenance, or a failure or malfunction of the sources, treatment, storage or distribution system that the State determines to be causing, or have potential for causing, the introduction of contamination into the water delivered to consumers.

(E) Within 120 days (or earlier if directed by the State) of receiving written notification from the State of a significant deficiency, written notice from a laboratory that a ground water source sample collected under subsection (c)(1)(C) was found to be E. coli-positive, or direction from the State that an E. coli-positive sample collected under subsections (c)(1)(B), (c)(1)(D), or (c)(2) requires corrective action, the ground water system must either:

(i) Have completed corrective action in accordance with applicable State plan review processes or other State guidance or direction, if any, including state-specified interim measures; or

(ii) Be in compliance with a state-approved corrective action plan and schedule subject to the following conditions: Any subsequent modifications to a state-approved corrective action plan and schedule must also be approved by the State; and if the State specifies interim measures for protection of the public health pending State approval of the corrective action plan and schedule or pending completion of the correction action plan, the system must comply with these interim measures as well as with any schedule specified by the State.

(F) Corrective Action Alternatives. Ground water systems that meet the conditions of subparagraphs (A) or (B) must implement one or more of the following corrective action alternatives:

(i) Correct all significant deficiencies;

(ii) Provide an alternate source of water;

(iii) Eliminate the source of contamination; or

(iv) Provide treatment that reliably achieves at least 4-log treatment of viruses (using inactivation, removal, or a state-approved combination of 4-log virus inactivation and removal) before or at the first customer for the ground water source.

(G) Special notice to the public of significant deficiencies or source water fecal contamination.

(i) In addition to the applicable public notification requirements of section 11-20-18(b), a community ground water system that receives notice from the State of a significant deficiency or notification of an E. coli-positive ground water source sample that is not invalidated by the State under subsection (c)(4) must inform the public served by the water system under section 11-20-48.5 of the E. coli-positive source sample or of any significant deficiency that has not been corrected. The system must continue to inform the public annually until the significant deficiency is corrected or the fecal contamination in the ground water source is determined by the State to be corrected under subparagraph (E).

(ii) In addition to the applicable public notification requirements of section 11-20-18(b), a non-community ground water system that receives notice from the State of a significant deficiency must inform the public served by the water system in a manner approved by the State of any significant deficiency that has not been corrected within 12 months of being notified by the State, or earlier if directed by the State. The system must continue to inform the public annually until the significant deficiency is corrected. The information must include: The nature of the significant deficiency and the date the significant deficiency was identified by the State; the state-approved plan and schedule for correction of the significant deficiency, including interim measures, progress to date, and any interim measures completed; and for systems with a large proportion of non-English speaking consumers, as determined by the State, information in the appropriate language(s) regarding the importance of the notice or a telephone number or address where consumers may contact the system to obtain a translated copy of the notice or assistance in the appropriate language.

(iii) If directed by the State, a non-community water system with significant deficiencies that have been corrected must inform its customers of the significant deficiencies, how the deficiencies were corrected, and the dates of correction under clause (ii).

(2) Compliance monitoring.

(A) Existing ground water sources. A ground water system that is not required to meet the source water monitoring requirements of this subpart for any ground water source because it provides at least 4-log treatment of viruses (using inactivation, removal, or a state-approved combination of 4-log virus inactivation and removal) before or at the first customer for any ground water source before December 1, 2009, must notify the State in writing that it provides at least 4-log treatment of viruses (using inactivation, removal, or a state-approved combination of 4-log virus inactivation and removal) before or at the first customer for the specified ground water source and begin compliance monitoring in accordance with subparagraph (C) by December 1, 2009. Notification to the State must include engineering, operational, or other information that the State requests to evaluate the submission. If the system subsequently discontinues 4-log treatment of viruses (using inactivation, removal, or a state- approved combination of 4-log virus inactivation and removal) before or at the first customer for a ground water source, the system must conduct ground water source monitoring as required under subsection (c).

(B) New ground water sources. A ground water system that places a ground water source in service after November 30, 2009, that is not required to meet the source water monitoring requirements of this subpart because the system provides at least 4-log treatment of viruses (using inactivation, removal, or a state-approved combination of 4-log virus inactivation and removal) before or at the first customer for the ground water source must comply with the following requirements:

(i) The system must notify the State in writing that it provides at least 4-log treatment of viruses (using inactivation, removal, or a state-approved combination of 4-log virus inactivation and removal) before or at the first customer for the ground water source. Notification to the State must include engineering, operational, or other information that the State requests to evaluate the submission.

(ii) The system must conduct compliance monitoring as required under subparagraph (C) within 30 days of placing the source in service.

(iii) The system must conduct ground water source monitoring under subsection (c) if the system subsequently discontinues 4-log treatment of viruses (using inactivation, removal, or a state-approved combination of 4-log virus inactivation and removal) before or at the first customer for the ground water source.

(C) Monitoring requirements. A ground water system subject to the requirements of paragraph (1), subparagraphs (A) or (B) must monitor the effectiveness and reliability of treatment for that ground water source before or at the first customer as follows:

(i) Chemical disinfection. Ground water systems serving greater than 3,300 people. A ground water system that serves greater than 3,300 people must continuously monitor the residual disinfectant concentration using analytical methods specified in section 11-20-46(d)(1)(B) at a location approved by the State and must record the lowest residual disinfectant concentration each day that water from the ground water source is served to the public. The ground water system must maintain the state-determined residual disinfectant concentration every day the ground water system serves water from the ground water source to the public. If there is a failure in the continuous monitoring equipment, the ground water system must conduct grab sampling every four hours until the continuous monitoring equipment is returned to service. The system must resume continuous residual disinfectant monitoring within 14 days. Ground water systems serving 3,300 or fewer people. A ground water system that serves 3,300 or fewer people must monitor the residual disinfectant concentration using analytical methods specified in section 11-20-46(d)(1)(B) at a location approved by the State and record the residual disinfection concentration each day that water from the ground water source is served to the public. The ground water system must maintain the state-determined residual disinfectant concentration every day the ground water system serves water from the ground water source to the public. The ground water system must take a daily grab sample during the hour of peak flow or at another time specified by the State. If any daily grab sample measurement falls below the state-determined residual disinfectant concentration, the ground water system must take follow-up samples every four hours until the residual disinfectant concentration is restored to the state-determined level. Alternatively, a ground water system that serves 3,300 or fewer people may monitor continuously and meet the requirements of ground water systems serving greater than 3,300 people of this clause.

(ii) Membrane filtration. A ground water system that uses membrane filtration to meet the requirements of this section must monitor the membrane filtration process in accordance with all state-specified monitoring requirements and must operate the membrane filtration in accordance with all state-specified compliance requirements. A ground water system that uses membrane filtration is in compliance with the requirement to achieve at least 4-log removal of viruses when: The membrane has an absolute molecular weight cut-off (MWCO), or an alternate parameter that describes the exclusion characteristics of the membrane, that can reliably achieve at least 4-log removal of viruses; the membrane process is operated in accordance with state-specified compliance requirements; and the integrity of the membrane is intact.

(iii) Alternative treatment. A ground water system that uses a State-approved alternative treatment to meet the requirements of this subpart by providing at least 4-log treatment of viruses (using inactivation, removal, or a state-approved combination of 4-log virus inactivation and removal) before or at the first customer must: Monitor the alternative treatment in accordance with all state-specified monitoring requirements; and operate the alternative treatment in accordance with all compliance requirements that the State determines to be necessary to achieve at least 4-log treatment of viruses.

(3) Discontinuing treatment. A ground water system may discontinue 4-log treatment of viruses (using inactivation, removal, or a State-approved combination of 4-log virus inactivation and removal) before or at the first customer for a ground water source if the State determines and documents in writing that 4-log treatment of viruses is no longer necessary for that ground water source. A system that discontinues 4-log treatment of viruses is subject to the source water monitoring and analytical methods requirements of subsection (c).

(4) Failure to meet the monitoring requirements of subsection (d)(2) is a monitoring violation and requires the ground water system to provide public notification under section 11-20-18(d).

(e) Treatment technique violations for ground water systems.

(1) A ground water system with a significant deficiency is in violation of the treatment technique requirement if, within 120 days (or earlier if directed by the State) of receiving written notice from the State of the significant deficiency, the system:

(A) Does not complete corrective action in accordance with any applicable state plan review processes or other state guidance and direction, including state-specified interim actions and measures, or

(B) Is not in compliance with a state-approved corrective action plan and schedule.

(2) Unless the State invalidates an E. coli-positive ground water source sample under subsection (c)(4), a ground water system is in violation of the treatment technique requirement if, within 120 days (or earlier if directed by the State) of meeting the conditions of subsections (d)(1)(A) or (d)(1)(B), the system:

(A) Does not complete corrective action in accordance with any applicable state plan review processes or other state guidance and direction, including state-specified interim measures, or

(B) Is not in compliance with a State-approved corrective action plan and schedule.

(3) A ground water system subject to the requirements of subsection (d)(2)(C) that fails to maintain at least 4-log treatment of viruses (using inactivation, removal, or a state-approved combination of 4-log virus inactivation and removal) before or at the first customer for a ground water source is in violation of the treatment technique requirement if the failure is not corrected within four hours of determining the system is not maintaining at least 4-log treatment of viruses before or at the first customer.

(4) A ground water system must give public notification under section 11-20-18(c) for the treatment technique violations specified in paragraphs (1), (2) and (3).

(f) Reporting and recordkeeping for ground water systems.

(1) Reporting. In addition to the requirements of section 11-20-17, a ground water system regulated under this section must provide the following information to the State:

(A) A ground water system conducting compliance monitoring under subsection (d)(2) must notify the State any time the system fails to meet any state-specified requirements including, but not limited to, minimum residual disinfectant concentration, membrane operating criteria or membrane integrity, and alternative treatment operating criteria, if operation in accordance with the criteria or requirements is not restored within four hours. The ground water system must notify the State as soon as possible, but in no case later than the end of the next business day.

(B) After completing any corrective action under subsection (d)(1), a ground water system must notify the State within 30 days of completion of the corrective action.

(C) If a ground water system subject to the requirements of subsection (c)(1) does not conduct source water monitoring under subsection (c)(1)(E)(ii), the system must provide documentation to the State within 30 days of the total coliform positive sample that it met the State criteria.

(2) Recordkeeping. In addition to the requirements of section 11-20-19, a ground water system regulated under this subpart must maintain the following information in its records:

(A) Documentation of corrective actions. Documentation shall be kept for a period of not less than ten years.

(B) Documentation of notice to the public as required under subsection (d)(1)(G). Documentation shall be kept for a period of not less than three years.

(C) Records of decisions under subsection (c)(1)(E)(ii) and records of invalidation of E.coli-positive ground water samples under subsection (c)(4). Documentation shall be kept for a period of not less than five years.

(D) For consecutive systems, documentation of notification to the wholesale system(s) of total-coliform positive samples that are not invalidated under section 11-20-9.1(c) beginning April 1, 2016. Documentation shall be kept for a period of not less than five years.

(E) For systems, including wholesale systems, that are required to perform compliance monitoring under subsection (d)(2):

(i) Records of the state-specified minimum disinfectant residual. Documentation shall be kept for a period of not less than ten years.

(ii) Records of the lowest daily residual disinfectant concentration and records of the date and duration of any failure to maintain the state-prescribed minimum residual disinfectant concentration for a period of more than four hours. Documentation shall be kept for a period of not less than five years.

(iii) Records of state-specified compliance requirements for membrane filtration and of parameters specified by the State for state-approved alternative treatment and records of the date and duration of any failure to meet the membrane operating, membrane integrity, or alternative treatment operating requirements for more than four hours. Documentation shall be kept for a period of not less than five years.

Haw. Code R. § 11-20-50

[Eff and comp MAY 02 2014 ] (Auth: HRS §§ 340E-2, 340E-9) (Imp: HRS §§ 340E-2, 340E-9; 42 U.S.C. §§300 f, 300g-1, 300g-2, 300g-3, 300g-4, 300g-5, 300g-6, 300j-4, 300j-9, 300j-11; 40 C.F.R. Part 141, §§ 141.400, 141.401, 141.402, 141.403, 141.404, and 141.405 )

Am and Comp 12/28/2017

Am and comp 10/29/2020