LAC 51:XII.1105. Analytical Requirements

A. Analysis for total coliform, fecal coliform, or HPC which may be required under this Chapter shall be conducted by a laboratory certified by DHH to do such analysis. Until laboratory certification criteria are developed, laboratories certified for total coliform analysis by DHH are deemed certified for fecal coliform and HPC analysis. B. Public water systems shall conduct analysis for turbidity in accordance with: 1. SM 2130 B [(Nephelometric Method), Standard Methods for the Examination of Water and Wastewater, 19th edition, American Public Health Association (APHA), 800 I Street N.W., Washington, D.C. 20001-3710. Telephone (202)777-2742. Also available from the American Water Works Association (AWWA) and the Water Environment Federation (WEF)]; 2. EPA Method 180.1 [(Nephelometric Method), "Methods for the Determination of Inorganic Substances in Environmental Samples," EPA-600-R-93-100, August 1993. Available from the National Technical Information Service, NTIS PB94-121811. Telephone (800) 553-6847]; or 3. GLI Method 2 [(Great Lakes Instrument Method 2), "Turbidity," November 2, 1982, GLI International, Inc., 9020 West Dean Road, Milwaukee, Wisconsin 53224. Telephone (414) 355-3601]. C. Public water systems shall conduct analysis for applicable residual disinfectant concentrations in accordance with one of the analytical methods in Table 1 Table 1 Residual | Methodology | Standard Methods1 | ASTM Methods2 | Other Methods Free Chlorine | Amperometric Titration | 4500-Cl D, 4500-Cl D-00 | D 1253-03 Free Chlorine | DPD Ferrous Titrimetric | 4500-Cl F, 4500-Cl F-00 Free Chlorine | DPD Colorimetric | 4500-Cl G, 4500-Cl G-00 Free Chlorine | Syringaldazine (FACTS) | 4500-Cl H, 4500-Cl H-00 Free Chlorine | On-line Chlorine Analyzer | EPA 334.03 Free Chlorine | Amperometric Sensor | ChloroSense4 Total Chlorine | Amperometric Titration | 4500-Cl D, 4500-Cl D-00 | D 1253-03 Total Chlorine | Amperometric Titration (low level measurement) | 4500-Cl E, 4500-Cl E-00 Total Chlorine | DPD Ferrous Titrimetric | 4500-Cl F, 4500-Cl F-00 Total Chlorine | DPD Colorimetric | 4500-Cl G, 4500-Cl G-00 Total Chlorine | Iodometric Electrode | 4500-Cl I, 4500-Cl I-00 Total Chlorine | On-line Chlorine Analyzer | EPA 334.03 Total Chlorine | Amperometric Sensor | ChloroSense4 Chlorine Dioxide | Amperometric Titration | 4500-ClO2 C Chlorine Dioxide | DPD Method | 4500-ClO2 D Chlorine Dioxide | Amperometric Titration II | 4500-ClO2 E, 4500-ClO2 E-00 Chlorine Dioxide | Lissamine Green Spectrophotometric | EPA 327.0 Rev 1.15 Ozone | Indigo Method | 4500-O3 B, 4500-O3 B-97 1. All the listed methods are contained in the 18th, 19th, 20th, 21st, and 22nd Editions of Standard Methods for the Examination of Water and Wastewater; the cited methods published in any of these editions may be used. 2. Annual Book of ASTM Standards, Vol. 11.01, 2004; ASTM International; any year containing the cited version of the method may be used. Copies of this method may be obtained from ASTM International, 100 Barr Harbor Drive, P.O. Box C700 West Conshohocken, PA 19428-2959. 3. EPA Method 334.0. “Determination of Residual Chlorine in Drinking Water Using an On-line Chlorine Analyzer,” August 2009. EPA 815-B-09-013. Available at http://epa.gov/safewater/methods/analyticalmethods_ogwdw.html. 4. ChloroSense. “Measurement of Free and Total Chlorine in Drinking Water by Palintest ChloroSense,” September 2009. Available at http://www.nemi.gov or from Palintest Ltd, 21 Kenton Lands Road, PO Box 18395, Erlanger, KY 41018. 5. EPA Method 327.0, Revision 1.1, “Determination of Chlorine Dioxide and Chlorite Ion in Drinking Water Using Lissamine Green B and Horseradish Peroxidase with Detection by Visible Spectrophotometry,” USEPA, May 2005, EPA 815-R-05-008. Available online at http://www.epa.gov/safewater/methods/sourcalt.html. D. Public water systems shall conduct analysis for pH using one of the following electrometric methods: 1. SM 4500-H+ B (Standard Methods for the Examination of Water and Wastewater, 19th Edition); 2. EPA Method 150.1 ("Methods for Chemical Analysis of Water and Wastes," EPA/600/4-79/020, March 1983. Available from the NTIS, PB84-128677); 3. EPA Method 150.2 ("Methods for Chemical Analysis of Water and Wastes," EPA/600/4-79/020, March 1983. Available from the NTIS, PB84-128677); or 4. ASTM Method D1293-95 [Annual Book of ASTM Standards, 1996, Vol. 11.01, American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, Pennsylvania 19428-2959. Telephone (610) 832-9585. Note: Previous version(ASTM Method D1293-84) is also approved and is located in the Annual Book of ASTM Standards, 1994, Vols. 11.01]. E. Public water systems shall conduct analysis for temperature using the following thermometric method: 1. SM 2550 B (Standard Methods for the Examination of Water and Wastewater, 19th Edition).