18 AAC 80.340. Examination of water: owner or operator requirements

(a) General requirements. To meet the applicable analytical requirements of this chapter, the owner or operator of a public water system must comply with the requirements of this section. Except as otherwise provided in this section and 18 AAC 80.350, the owner or operator shall ensure that an analysis that is required under this chapter for inorganic, organic, radioactive, and microbiological contaminants described in 18 AAC 80.300, 18 AAC 80.335, or 18 AAC 80.345 are performed by a certified laboratory. The owner or operator shall ensure that the results of that analysis are reported to the department within the first ten days following the month in which the result is received, or within the first ten days following the end of the required monitoring period, whichever is sooner. If the owner or operator submits the results, the submission is subject to the report certification requirements of 18 AAC 80.1900. If the owner or operator submits to a certified laboratory water samples for analysis for contaminants described in 18 AAC 80.300, the owner or operator shall clearly identify that the samples are from a drinking water source for a public water system.

(b) Analytical procedures and results. The owner or operator shall ensure that analyses under (c) - (e) of this section are performed by an individual trained in and capable of demonstrating proficiency in the analytical procedures referenced in this section. Results of analyses conducted under (c) and (d) of this section must be submitted to the department within the first seven days following the month in which the result is received, or the first seven days following the end of the required monitoring period, whichever is sooner. Submission of those results is subject to the report certification requirements of 18 AAC 80.1900.

(c) Fluoride. If fluoride is added to a public water system, the analysis required by 18 AAC 80.310 and (b) of this section must be performed using

(1) one of the following methods from the Manual for the Certification of Laboratories Analyzing Drinking Water , adopted by reference in 18 AAC 80.010(b) :

(A) EPA Method 300.0 (Ion Chromatography);

(B) ASTM D4327-91 (Ion Chromatography);

(D) ASTM D1179-93B (Manual ISE);

(E) Industrial Method 380-75WE (Automated ISE); or

(2) one of the following methods from Standard Methods for the Examination of Water and Wastewater , adopted by reference in 18 AAC 80.010(b) :

(A) Standard Method 4110B (Ion Chromatography with Chemical Suppression of Eluent Conductivity);

(B) Standard Method 4500F-B (Preliminary Distillation Step (Manual Distillation));

(D) Standard Method 4500F-D (SPADNS);

(E) Standard Method 4500F-E (Complexone Method (Auto Alizarin)).

(d) Analytical methods for surface water treatment. Only the analytical methods set out in this subsection may be used to demonstrate compliance with 18 AAC 80.600 - 18 AAC 80.680 and 18 AAC 80.699. The following procedures must be performed in accordance with the publications listed for each procedure, adopted by reference in 18 AAC 80.010(b) :

(1) turbidity: turbidity must be measured by Standard Method 2130-B (Nephelometric Method), as set out in Standard Methods for the Examination of Water and Wastewater ;

(2) residual disinfectant concentration: For each of the following disinfectants that is used, residual disinfectant concentration must be measured using one of the following methods as set out in Standard Methods for the Examination of Water and Wastewater :

(A) total chlorine, free chlorine, and combined chlorine (chloramines): residual disinfectant concentrations for total chlorine, free chlorine, and combined chlorine must be measured by Standard Method 4500-Cl D (Amperometric Titration Method), Standard Method 4500-Cl F (DPD Ferrous Titrimetric Method), or Standard Method 4500-Cl G (DPD Colorimetric Method), except that

(i) residual disinfectant concentration for free chlorine may be measured by Standard Method 4500-Cl H (Syringaldazine (FACTS) Method);

(ii) residual disinfectant concentration for total chlorine may be measured by Standard Method 4500-Cl E (Low Level Amperometric Titration Method) or Standard Method 4500-Cl I (Iodometric Electrode Technique);

(iii) residual disinfectant concentrations for total chlorine, free chlorine, combined chlorine, and chloramines may be measured using DPD colorimetric test kits; and

(iv) residual disinfectant concentrations for free and total chlorine may be measured continuously by adapting, for use with a continuous monitoring instrument, a method specified in this subparagraph if the chemistry, accuracy, and precision remain the same; instruments used for continuous monitoring must be calibrated using a grab sample measurement at least every five days, or following a protocol approved by the department to serve the interests of public health;

(B) chlorine dioxide: residual disinfectant concentration for chlorine dioxide must be measured by Standard Method 4500-ClO 2 C (Amperometric Method I), Standard Method 4500-ClO 2 D (DPD Method), or Standard Method 4500-ClO 2 E (Amperometric Method II);

(C) ozone: residual disinfectant concentration for ozone must be measured by Standard Method 4500-O3 B (Indigo Colorimetric Method);

(D) iodine: residual disinfectant concentration for iodine must be measured by Standard Method 4500-I B (Leuco Crystal Violet Method) or Standard Method 4500-I C (Amperometric Titration Method);

(3) temperature: temperature must be measured by Standard Method 2550, as set out in Standard Methods for the Examination of Water and Wastewater ;

(4) pH: pH must be measured by Standard Method 4500-H+B (Electrometric Method), as set out in Standard Methods for the Examination of Water and Wastewater , by EPA Method 150.1 or 150.2, as set out in Methods for Chemical Analysis of Water and Wastes , or by Method D1293-84 of the Annual Book of ASTM Standards .

(e) Repealed 1/11/2006.

History: Eff. 10/1/99, Register 151; am 9/28/2001, Register 159; am 5/2/2004, Register 170; am 1/11/2006, Register 177

Authority: AS 46.03.020

Editor's note: Information about how to review or obtain reference materials referred to in this section is in the editor's note to 18 AAC 80.010.

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