WAC 246-390-075

WAC 246-390-075. Reporting

Last amended: 2025Year: 2026Length: 4,197 wordsOfficial source
(1) A lab shall report analytical results to the department and the public water system. (2) A lab submitting paper reports shall complete and submit to the department data reports following the procedures and templates in the department's Laboratory Reporting Guidance , Publication DOH 331-530, April 2025. (3) A lab submitting electronic reports shall complete and submit to the department data reports following the procedures in the department's Electronic Reporting Guidance , Publication 331-289, April 2025. (4) Labs shall submit reports to the public water system in the format and time frame that was agreed upon when executing the service agreement between the laboratory and the public water system. (5) Labs shall submit reports of acute contaminant results within 10 business days after receiving the sample. (6) Labs shall submit reports of chronic contaminants within 30 calendar days after receiving the sample. (7) Analytical results must be complete, legible, and accurate. (8) A lab shall report numerical results consistent with the accuracy of the EPA-approved methods and any associated lab instruments, glassware, or tools. (9) A lab shall report numerical results out to, but not exceed, one decimal place past the SDRL in cases where the last definitely known digit exceeds one decimal place past the SDRL as follows: (a) If the digit 5, 6, 7, 8, or 9 is dropped, increase the preceding digit by one unit; (b) If the digit 0, 1, 2, 3, or 4 is dropped, do not alter the preceding digit; or (c) If the SDRL is 1.1 and the result, out to the last definitely known digit is 1.13, then the value reported to the department is 1.1. If the result is 1.15, then the value reported to the department is 1.2. (10) A lab shall include the following data qualifiers adjacent to the results that are affected: (a) "B" - This data qualifier is used when the target contaminant is detected in the method blank above the lab's established MRL or SDRL, whichever is lower; (b) "J" - This data qualifier is used when the result is an estimated concentration per subsections (13), (14), and (17) of this section; (c) "NDDS" - This data qualifier is used when the contaminant is not detected in duplicate sample; or (d) "U" - This data qualifier is used when the radiochemistry contaminant is not detected at or above the lab's established MDA. (11) A lab shall notate on the report to the public water system and the department when any analysis is completed using a provisional accreditation. (12) At the department's request, a lab shall submit the following information: (a) The method specific QC for any given analytical report. (b) The most recent MDL procedures performed for any given contaminant. (c) The most recent PT study performed for any given contaminant. (13) The SDRLs for organic chemical contaminants are established in Tables 3 and 7 of this section. All contaminants in Tables 3 and 7 are considered chronic contaminants. (a) Labs shall provide a copy of the method specific QC results at the request of the department. (b) A lab shall report organic chemical contaminant results when the lab's established MRL is greater than the SDRL as follows: (i) "Nondetect" or "ND" when a lab's result is less than the SDRL and MRL; (ii) An estimated concentration, notated with a "J" data qualifier when a result is equal to or greater than the SDRL, but less than the lab's established MRL; (iii) A number when a result is equal to or greater than the lab's established MRL. (c) A lab shall report organic chemical contaminant results when the lab's established MRL is less than the SDRL as follows: (i) "Nondetect" or "ND" when a lab's result is less than the lab's established MRL; (ii) "Nondetect" or "ND" when a lab's result is less than the established SDRL; or (iii) A number when a result is equal to or greater than the SDRL. (d) A lab shall report organic chemical contaminant results when their established MRL is equal to the SDRL as: (i) "Nondetect" or "ND" when a lab's result is less than the SDRL and MRL; or (ii) A number when a result is equal to or greater than the SDRL and the lab's established MRL. Table 3 - Organic Contaminants Contaminant Name Contaminant Number Units SDRL 1,1 Dichloroethane 0058 µg/L 0.5 1,1 Dichloroethylene 0046 µg/L 0.5 1,1 Dichloropropene 0062 µg/L 0.5 1,1,1 Trichloroethane 0047 µg/L 0.5 1,1,1,2 Tetrachloroethane 0072 µg/L 0.5 1,1,2 Trichloroethane 0067 µg/L 0.5 1,1,2,2 Tetrachloroethane 0080 µg/L 0.5 1,2 Dichlorobenzene 0084 µg/L 0.5 1,2 Dichloroethane 0050 µg/L 0.5 1,2 Dichloropropane 0063 µg/L 0.5 1,2,3 Trichlorobenzene 0098 µg/L 0.5 1,2,3 Trichloropropane 0079 µg/L 0.5 1,2,4 Trichlorobenzene 0095 µg/L 0.5 1,2,4 Trimethylbenzene 0091 µg/L 0.5 1,3 Dichloropropane 0070 µg/L 0.5 1,3 Dichloropropene 0154 µg/L 0.5 1,3,5 Trimethylbenzene 0089 µg/L 0.5 1,4 Dichlorobenzene 0052 µg/L 0.5 2,2 Dichloropropane 0059 µg/L 0.5 2,3,7,8 TCDD (dioxin) 0149 ng/L 0.005 2,4 D 0037 µg/L 0.1 2,4 DB 0135 µg/L 1 2,4,5 T 0136 µg/L 0.4 2,4,5 TP (Silvex) 0038 µg/L 0.2 3,5 Dichlorbenzoic Acid 0226 µg/L 0.5 4,4 DDD 0232 µg/L 0.1 4,4 DDE 0233 µg/L 0.1 4,4 DDT 0234 µg/L 0.1 Acenaphthylene 0244 µg/L 0.2 Acifluorfen 0223 µg/L 2 Alachlor 0117 µg/L 0.2 Aldicarb 0142 µg/L 0.5 Aldicarb Sulfone 0143 µg/L 0.8 Aldicarb Sulfoxide 0144 µg/L 0.5 Aldrin 0118 µg/L 0.1 Anthracene 0246 µg/L 0.2 Arochlor 1016 0180 µg/L 0.08 Arochlor 1221 0173 µg/L 20 Arochlor 1232 0174 µg/L 0.5 Arochlor 1242 0175 µg/L 0.3 Arochlor 1248 0176 µg/L 0.1 Arochlor 1254 0177 µg/L 0.1 Arochlor 1260 0178 µg/L 0.2 Atrazine 0119 µg/L 0.1 Bentazon 0220 µg/L 0.5 Benzene 0049 µg/L 0.5 Benzo (a) anthracene 0247 µg/L 0.2 Benzo (a) Pyrene 0120 µg/L 0.02 Benzo (b) fluoroanthene 0248 µg/L 0.2 Benzo (k) fluoranthene 0250 µg/L 0.2 Benzyl Butyl Phthalate 0258 µg/L 1.0 Bromacil 0179 µg/L 0.1 Bromobenzene 0078 µg/L 0.5 Bromochloromethane 0086 µg/L 0.5 Bromodichloromethane 0028 µg/L 0.5 Bromoform 0030 µg/L 0.5 Bromomethane 0054 µg/L 0.5 Butachlor 0121 µg/L 0.1 Carbaryl 0145 µg/L 2 Carbofuran 0146 µg/L 0.9 Carbon Tetrachloride 0048 µg/L 0.5 Chlordane (total) 0122 µg/L 0.2 Chlorobenzene 0071 µg/L 0.5 Chloroethane 0055 µg/L 0.5 Chloroform 0027 µg/L 0.5 Chloromethane 0053 µg/L 0.5 Chrysene 0251 µg/L 0.2 Cis- 1,2 Dichloroethylene 0060 µg/L 0.5 Cis- 1,3 Dichloropropene 0065 µg/L 0.5 Dalapon 0137 µg/L 1 DBCP 0103 µg/L 0.02 DBCP (screening) 0428 µg/L 0.5 DCPA Acid Metabolites 0225 µg/L 0.1 Di (2-Ethylhexyl) Adipate 0124 µg/L 0.6 Di (2-Ethylhexyl) Phthalate 0125 µg/L 0.6 Dibromoacetic Acid 0415 µg/L 1 Dibromochloromethane 0029 µg/L 0.5 Dibromomethane 0064 µg/L 0.5 Dicamba 0138 µg/L 0.2 Dichloroacetic Acid 0412 µg/L 1 Dichlorodifluoromethane 0104 µg/L 0.5 Dichlorprop 0221 µg/L 0.5 Dieldrin 0123 µg/L 0.1 Diethyl Phthalate 0260 µg/L 1.0 Dimethyl Phthalate 0261 µg/L 1.0 Di-n-butyl Phthalate 0259 µg/L 1.0 Dinoseb 0139 µg/L 0.2 Diquat 0150 µg/L 0.4 EDB 0102 µg/L 0.01 EDB (screening) 0427 µg/L 0.5 Endothal 0151 µg/L 9 Endrin 0033 µg/L 0.01 EPTC 0208 µg/L 0.1 Ethylbenzene 0073 µg/L 0.5 Fluorene 0254 µg/L 0.2 Glyphosate 0152 µg/L 6 HAA(5) 0416 µg/L + Heptachlor 0126 µg/L 0.04 Heptachlor Epoxide 0127 µg/L 0.02 Hexachlorobenzene 0128 µg/L 0.1 Hexachlorobutadiene 0097 µg/L 0.5 Hexachlorocyclo pentadiene 0129 µg/L 0.1 Isopropylbenzene 0087 µg/L 0.5 Lindane (bhc - gamma) 0034 µg/L 0.02 M- dichlorobenzene 0083 µg/L 0.5 M/P Xylenes (MCL for total) 0074 µg/L 0.5 Methomyl 0147 µg/L 4 Methoxychlor 0035 µg/L 0.1 Methylene Chloride (Dichloromethane) 0056 µg/L 0.5 Metolachlor 0130 µg/L 0.1 Metribuzin 0131 µg/L 0.1 Molinate 0218 µg/L 0.1 Monobromoacetic Acid 0414 µg/L 1 Monochloroacetic Acid 0411 µg/L 2 Naphthalene 0096 µg/L 0.5 N-Butylbenzene 0094 µg/L 0.5 N-Propylbenzene 0088 µg/L 0.5 O- Chlorotoluene 0081 µg/L 0.5 O- Xylene (MCL for total) 0075 µg/L 0.5 Oxamyl 0148 µg/L 2 P- Chlorotoluene 0082 µg/L 0.5 Paraquat 0400 µg/L 0.8 PCB (as Decachlorobiphenyl) 0401 µg/L 0.1 Pentachlorophenol 0134 µg/L 0.04 Phenanthrene 0256 µg/L 0.2 Picloram 0140 µg/L 0.1 P-Isopropyltoluene 0093 µg/L 0.5 Propachlor 0132 µg/L 0.1 Pyrene 0257 µg/L 0.2 Sec- Butylbenzene 0092 µg/L 0.5 Simazine 0133 µg/L 0.07 Styrene 0076 µg/L 0.5 Terbacil 0190 µg/L 0.1 Tert- Butylbenzene 0090 µg/L 0.5 Tetrachloroethylene 0068 µg/L 0.5 Toluene 0066 µg/L 0.5 Total organic carbon 0421 mg/L 0.7 Total Trihalomethane 0031 µg/L + Total Xylenes 0160 µg/L 0.5 Toxaphene 0036 µg/L 1 Trans- 1,2 Dichloroethylene 0057 µg/L 0.5 Trans- 1,3 Dichloropropene 0069 µg/L 0.5 Trichloroacetic Acid 0413 µg/L 1 Trichloroethylene 0051 µg/L 0.5 Trichlorofluoromethane 0085 µg/L 0.5 Trifluralin 0243 µg/L 0.1 Vinyl Chloride 0045 µg/L 0.5 Contaminant Name Contaminant Number Units SDRL 1,1 Dichloroethane 0058 µg/L 0.5 1,1 Dichloroethylene 0046 µg/L 0.5 1,1 Dichloropropene 0062 µg/L 0.5 1,1,1 Trichloroethane 0047 µg/L 0.5 1,1,1,2 Tetrachloroethane 0072 µg/L 0.5 1,1,2 Trichloroethane 0067 µg/L 0.5 1,1,2,2 Tetrachloroethane 0080 µg/L 0.5 1,2 Dichlorobenzene 0084 µg/L 0.5 1,2 Dichloroethane 0050 µg/L 0.5 1,2 Dichloropropane 0063 µg/L 0.5 1,2,3 Trichlorobenzene 0098 µg/L 0.5 1,2,3 Trichloropropane 0079 µg/L 0.5 1,2,4 Trichlorobenzene 0095 µg/L 0.5 1,2,4 Trimethylbenzene 0091 µg/L 0.5 1,3 Dichloropropane 0070 µg/L 0.5 1,3 Dichloropropene 0154 µg/L 0.5 1,3,5 Trimethylbenzene 0089 µg/L 0.5 1,4 Dichlorobenzene 0052 µg/L 0.5 2,2 Dichloropropane 0059 µg/L 0.5 2,3,7,8 TCDD (dioxin) 0149 ng/L 0.005 2,4 D 0037 µg/L 0.1 2,4 DB 0135 µg/L 1 2,4,5 T 0136 µg/L 0.4 2,4,5 TP (Silvex) 0038 µg/L 0.2 3,5 Dichlorbenzoic Acid 0226 µg/L 0.5 4,4 DDD 0232 µg/L 0.1 4,4 DDE 0233 µg/L 0.1 4,4 DDT 0234 µg/L 0.1 Acenaphthylene 0244 µg/L 0.2 Acifluorfen 0223 µg/L 2 Alachlor 0117 µg/L 0.2 Aldicarb 0142 µg/L 0.5 Aldicarb Sulfone 0143 µg/L 0.8 Aldicarb Sulfoxide 0144 µg/L 0.5 Aldrin 0118 µg/L 0.1 Anthracene 0246 µg/L 0.2 Arochlor 1016 0180 µg/L 0.08 Arochlor 1221 0173 µg/L 20 Arochlor 1232 0174 µg/L 0.5 Arochlor 1242 0175 µg/L 0.3 Arochlor 1248 0176 µg/L 0.1 Arochlor 1254 0177 µg/L 0.1 Arochlor 1260 0178 µg/L 0.2 Atrazine 0119 µg/L 0.1 Bentazon 0220 µg/L 0.5 Benzene 0049 µg/L 0.5 Benzo (a) anthracene 0247 µg/L 0.2 Benzo (a) Pyrene 0120 µg/L 0.02 Benzo (b) fluoroanthene 0248 µg/L 0.2 Benzo (k) fluoranthene 0250 µg/L 0.2 Benzyl Butyl Phthalate 0258 µg/L 1.0 Bromacil 0179 µg/L 0.1 Bromobenzene 0078 µg/L 0.5 Bromochloromethane 0086 µg/L 0.5 Bromodichloromethane 0028 µg/L 0.5 Bromoform 0030 µg/L 0.5 Bromomethane 0054 µg/L 0.5 Butachlor 0121 µg/L 0.1 Carbaryl 0145 µg/L 2 Carbofuran 0146 µg/L 0.9 Carbon Tetrachloride 0048 µg/L 0.5 Chlordane (total) 0122 µg/L 0.2 Chlorobenzene 0071 µg/L 0.5 Chloroethane 0055 µg/L 0.5 Chloroform 0027 µg/L 0.5 Chloromethane 0053 µg/L 0.5 Chrysene 0251 µg/L 0.2 Cis- 1,2 Dichloroethylene 0060 µg/L 0.5 Cis- 1,3 Dichloropropene 0065 µg/L 0.5 Dalapon 0137 µg/L 1 DBCP 0103 µg/L 0.02 DBCP (screening) 0428 µg/L 0.5 DCPA Acid Metabolites 0225 µg/L 0.1 Di (2-Ethylhexyl) Adipate 0124 µg/L 0.6 Di (2-Ethylhexyl) Phthalate 0125 µg/L 0.6 Dibromoacetic Acid 0415 µg/L 1 Dibromochloromethane 0029 µg/L 0.5 Dibromomethane 0064 µg/L 0.5 Dicamba 0138 µg/L 0.2 Dichloroacetic Acid 0412 µg/L 1 Dichlorodifluoromethane 0104 µg/L 0.5 Dichlorprop 0221 µg/L 0.5 Dieldrin 0123 µg/L 0.1 Diethyl Phthalate 0260 µg/L 1.0 Dimethyl Phthalate 0261 µg/L 1.0 Di-n-butyl Phthalate 0259 µg/L 1.0 Dinoseb 0139 µg/L 0.2 Diquat 0150 µg/L 0.4 EDB 0102 µg/L 0.01 EDB (screening) 0427 µg/L 0.5 Endothal 0151 µg/L 9 Endrin 0033 µg/L 0.01 EPTC 0208 µg/L 0.1 Ethylbenzene 0073 µg/L 0.5 Fluorene 0254 µg/L 0.2 Glyphosate 0152 µg/L 6 HAA(5) 0416 µg/L + Heptachlor 0126 µg/L 0.04 Heptachlor Epoxide 0127 µg/L 0.02 Hexachlorobenzene 0128 µg/L 0.1 Hexachlorobutadiene 0097 µg/L 0.5 Hexachlorocyclo pentadiene 0129 µg/L 0.1 Isopropylbenzene 0087 µg/L 0.5 Lindane (bhc - gamma) 0034 µg/L 0.02 M- dichlorobenzene 0083 µg/L 0.5 M/P Xylenes (MCL for total) 0074 µg/L 0.5 Methomyl 0147 µg/L 4 Methoxychlor 0035 µg/L 0.1 Methylene Chloride (Dichloromethane) 0056 µg/L 0.5 Metolachlor 0130 µg/L 0.1 Metribuzin 0131 µg/L 0.1 Molinate 0218 µg/L 0.1 Monobromoacetic Acid 0414 µg/L 1 Monochloroacetic Acid 0411 µg/L 2 Naphthalene 0096 µg/L 0.5 N-Butylbenzene 0094 µg/L 0.5 N-Propylbenzene 0088 µg/L 0.5 O- Chlorotoluene 0081 µg/L 0.5 O- Xylene (MCL for total) 0075 µg/L 0.5 Oxamyl 0148 µg/L 2 P- Chlorotoluene 0082 µg/L 0.5 Paraquat 0400 µg/L 0.8 PCB (as Decachlorobiphenyl) 0401 µg/L 0.1 Pentachlorophenol 0134 µg/L 0.04 Phenanthrene 0256 µg/L 0.2 Picloram 0140 µg/L 0.1 P-Isopropyltoluene 0093 µg/L 0.5 Propachlor 0132 µg/L 0.1 Pyrene 0257 µg/L 0.2 Sec- Butylbenzene 0092 µg/L 0.5 Simazine 0133 µg/L 0.07 Styrene 0076 µg/L 0.5 Terbacil 0190 µg/L 0.1 Tert- Butylbenzene 0090 µg/L 0.5 Tetrachloroethylene 0068 µg/L 0.5 Toluene 0066 µg/L 0.5 Total organic carbon 0421 mg/L 0.7 Total Trihalomethane 0031 µg/L + Total Xylenes 0160 µg/L 0.5 Toxaphene 0036 µg/L 1 Trans- 1,2 Dichloroethylene 0057 µg/L 0.5 Trans- 1,3 Dichloropropene 0069 µg/L 0.5 Trichloroacetic Acid 0413 µg/L 1 Trichloroethylene 0051 µg/L 0.5 Trichlorofluoromethane 0085 µg/L 0.5 Trifluralin 0243 µg/L 0.1 Vinyl Chloride 0045 µg/L 0.5 + Results are calculated values based on other analytical results. (14) The SDRLs for inorganic chemical contaminants are established in Table 4 of this section. All contaminants in Table 4 are considered chronic contaminants except annual, quarterly, or monthly nitrate analysis which is considered an acute contaminant. Labs shall report analytical results within 10 business days after receiving the nitrate sample. If nitrate analysis is part of a routine complete inorganic compound panel, then labs shall submit a report to the department within 30 calendar days after receiving the sample. (a) Labs shall provide a copy of the method specific QC results at the request of the department. (b) A lab shall report inorganic chemical contaminant results when the lab's established MRL is greater than the SDRL as follows: (i) "Nondetect" or "ND" when a lab's result is less than the SDRL and MRL; (ii) An estimated concentration, notated with a "J" data qualifier, when a result is equal to or greater than the SDRL, but less than the lab's established MRL; or (iii) A number when a result is equal to or greater than the lab's established MRL. (c) A lab shall report inorganic chemical contaminant results when the lab's established MRL is less than the SDRL as follows: (i) "Nondetect" or "ND" when a lab's result is less than the lab's established MRL; (ii) "Nondetect" or "ND" when a lab's result is less than the department's established SDRL, but greater than the lab's established MRL; or (iii) A number when a result is equal to or greater than the SDRL. (d) A lab shall report inorganic chemical contaminant results when the lab's established MRL is equal to the SDRL as: (i) "Nondetect" or "ND" when a lab's result is less than the SDRL and MRL; or (ii) A number when a result is equal to or greater than the SDRL and the lab's established MRL. Table 4 - Inorganic Contaminants Contaminant Name Contaminant Number Units SDRL Alkalinity-Lab 0403 mg/L 5 Antimony 0112 mg/L 0.003 Arsenic 0004 mg/L 0.001 Asbestos 0115 MFL 0.20 Barium 0005 mg/L 0.1 Beryllium 0110 mg/L 0.0003 Bromate 0419 mg/L 0.005/0.001 Cadmium 0006 mg/L 0.001 Chloride 0021 mg/L 2 Chlorite 0418 mg/L 0.02 Chromium 0007 mg/L 0.007 Color 0018 CU 15 Conductivity 0016 µmhos/cm 70 Copper 0023 mg/L 0.02 Cyanide 0116 mg/L 0.05 Fluoride 0019 mg/L 0.2 Hardness 0015 mg/L 10 Iron 0008 mg/L 0.1 Lead 0009 mg/L 0.001 Manganese 0010 mg/L 0.01 Mercury 0011 mg/L 0.0002 Nickel 0111 mg/L 0.005 Nitrate-n 0020 mg/L 0.5 Nitrite-n 0114 mg/L 0.1 Selenium 0012 mg/L 0.002 Silver 0013 mg/L 0.1 Sodium 0014 mg/L 5 Sulfate 0022 mg/L 2 TDS-total dissolved solids 0026 mg/L 100 Thallium 0113 mg/L 0.001 Total nitrate/nitrite 0161 mg/L 0.5 Turbidity 0017 NTU 0.1 Zinc 0024 mg/L 0.2 Contaminant Name Contaminant Number Units SDRL Alkalinity-Lab 0403 mg/L 5 Antimony 0112 mg/L 0.003 Arsenic 0004 mg/L 0.001 Asbestos 0115 MFL 0.20 Barium 0005 mg/L 0.1 Beryllium 0110 mg/L 0.0003 Bromate 0419 mg/L 0.005/0.001 Cadmium 0006 mg/L 0.001 Chloride 0021 mg/L 2 Chlorite 0418 mg/L 0.02 Chromium 0007 mg/L 0.007 Color 0018 CU 15 Conductivity 0016 µmhos/cm 70 Copper 0023 mg/L 0.02 Cyanide 0116 mg/L 0.05 Fluoride 0019 mg/L 0.2 Hardness 0015 mg/L 10 Iron 0008 mg/L 0.1 Lead 0009 mg/L 0.001 Manganese 0010 mg/L 0.01 Mercury 0011 mg/L 0.0002 Nickel 0111 mg/L 0.005 Nitrate-n 0020 mg/L 0.5 Nitrite-n 0114 mg/L 0.1 Selenium 0012 mg/L 0.002 Silver 0013 mg/L 0.1 Sodium 0014 mg/L 5 Sulfate 0022 mg/L 2 TDS-total dissolved solids 0026 mg/L 100 Thallium 0113 mg/L 0.001 Total nitrate/nitrite 0161 mg/L 0.5 Turbidity 0017 NTU 0.1 Zinc 0024 mg/L 0.2 Labs that use EPA Methods 317.0, 326.0 or 321.8 must meet a 0.0010 mg/L SDRL for bromate. (15) The SDRLs for radiochemistry contaminants are established in Table 5 of this section. All contaminants in Table 5 are considered chronic contaminants. (a) A lab's MDA must meet the established SDRL levels for the analysis to be considered for compliance purposes. (b) A lab shall report radiochemistry contaminant results as: (i) A number and a "U" qualifier if the contaminant was analyzed for, but not detected at or above the lab's established MDA; or (ii) A number when a result is equal to or greater than the lab's established MDA. Table 5 - Radiochemistry Contaminants Contaminant Name Contaminant Number Units SDRL Cesium 134 0107 pCi/L 10.0 Gross Alpha 0165 pCi/L 3.0 Gross Alpha (Minus Uranium) 0041 pCi/L + Gross Beta 0042 pCi/L 4.0 Iodine 131 0108 pCi/L 1.0 Radium 226 0039 pCi/L 1.0 Radium 226 + 228 0040 pCi/L + Radium 228 0166 pCi/L 1.0 Radon 0109 pCi/L + Strontium 90 0044 pCi/L 2.0 Tritium 0043 pCi/L 1000 Uranium 0105 µg/L 1.0 Contaminant Name Contaminant Number Units SDRL Cesium 134 0107 pCi/L 10.0 Gross Alpha 0165 pCi/L 3.0 Gross Alpha (Minus Uranium) 0041 pCi/L + Gross Beta 0042 pCi/L 4.0 Iodine 131 0108 pCi/L 1.0 Radium 226 0039 pCi/L 1.0 Radium 226 + 228 0040 pCi/L + Radium 228 0166 pCi/L 1.0 Radon 0109 pCi/L + Strontium 90 0044 pCi/L 2.0 Tritium 0043 pCi/L 1000 Uranium 0105 µg/L 1.0 + Results are calculated values based on other analytical results. (16) The units for microbiology contaminants are established in Table 6 of this section. All contaminants in Table 6 are considered acute contaminants. (a) Total coliform and E. coli results for routine and repeat samples in accordance with 40 C.F.R. 141 Subpart Y - Revised Total Coliform Rule, GWR triggered, and GWR assessment source sample results that are absent or present as follows: (i) "Satisfactory" if no total coliforms are detected. (ii) "Unsatisfactory" if: (A) Total coliforms are detected; and (B) E. coli absent if E. coli is not detected; or (C) E. coli present if E. coli is detected. (b) A lab shall report routine filtered and unfiltered surface water microbiology contaminant results as a number. (c) A lab shall report routine heterotrophic plate count results as a number. (d) A lab shall report results of investigative samples or samples collected for information only to the public water system for total coliforms, fecal coliforms, and E. coli as a number or, as absent or present. Investigative samples or samples collected for information only are not required to be reported to the department. Table 6 - Microbiology Contaminants Contaminant Name Contaminant Number Units E. coli (numerical) 0003 CFU/100mL E. coli (numerical) 0003 MPN/100mL E. coli (absence/presence) 0003 N/A Fecal Coliform (numerical) 0002 CFU/100mL Fecal Coliform (numerical) 0002 MPN/100mL Fecal Coliform (absence/presence) 0002 N/A Heterotrophic Plate Count (numerical) 0101 CFU/1mL Heterotrophic Plate Count (numerical) 0101 MPN/mL Total Coliform (numerical) 0001 CFU/100mL Total Coliform (numerical) 0001 MPN/100mL Total Coliform (absence/presence) 0001 N/A Contaminant Name Contaminant Number Units E. coli (numerical) 0003 CFU/100mL E. coli (numerical) 0003 MPN/100mL E. coli (absence/presence) 0003 N/A Fecal Coliform (numerical) 0002 CFU/100mL Fecal Coliform (numerical) 0002 MPN/100mL Fecal Coliform (absence/presence) 0002 N/A Heterotrophic Plate Count (numerical) 0101 CFU/1mL Heterotrophic Plate Count (numerical) 0101 MPN/mL Total Coliform (numerical) 0001 CFU/100mL Total Coliform (numerical) 0001 MPN/100mL Total Coliform (absence/presence) 0001 N/A (17) The SDRLs for per- and polyfluoroalkyl substances (PFAS) are established in Table 7 of this section. All contaminants in Table 7 are considered chronic contaminants. (a) A lab shall analyze PFAS samples using EPA method 537.1 version 2 (3/20), or EPA method 533. (b) Labs shall provide a copy of the method specific QC results at the request of the department. (c) A lab shall report PFAS contaminant results when the lab's established MRL is greater than the SDRL as follows: (i) "Nondetect" or "ND" when a lab's result is less than the SDRL and MRL; (ii) An estimated concentration, notated with a "J" data qualifier when a result is equal to or greater than the SDRL, but less than the lab's established MRL; or (iii) A number when a result is equal to or greater than the lab's established MRL. (d) A lab shall report PFAS contaminant results when the lab's established MRL is less than the SDRL as follows: (i) "Nondetect" or "ND" when a lab's result is less than the lab's established MRL; (ii) "Nondetect" or "ND" when a lab's result is less than the established SDRL; or (iii) A number when a result is equal to or greater than the SDRL. (e) A lab shall report PFAS contaminant results when the lab's established MRL is equal to the SDRL as follows: (i) "Nondetect" or "ND" when a lab's result is less than the SDRL and MRL; or (ii) A number when a result is equal to or greater than the SDRL and the lab's established MRL. (f) A lab shall report to the department any tentatively identified compounds (TIC) that are detected while analyzing a PFAS sample if the approved method allows for TIC determinations to be made. (g) A lab shall provide a copy of the method-specific QC results for any TIC detections that are reported to the department. Table 7 - Per- and Polyfluoroalkyl Contaminants Contaminant Name Contaminant Number Units SDRL 3 Required Contaminant List for EPA 537.1 version 2 (3/20) 4 Required Contaminant List for EPA 533 (11Cl-PF3OUdS) 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid 448 ng/L 2.0 Y Y (4:2FTS) 1H,1H, 2H, 2H-Perfluorohexane sulfonic acid 450 ng/L 2.0 N Y (6:2FTS) 1H,1H, 2H, 2H-Perfluorooctane sulfonic acid 451 ng/L 2.0 N Y (8:2FTS) 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid 452 ng/L 2.0 N Y (9Cl-PF3ONS) 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 446 ng/L 2.0 Y Y (ADONA) 4,8-Dioxa-3H-perfluorononanoic acid 445 ng/L 2.0 Y Y (HFPO-DA) Hexafluoropropylene oxide dimer acid 447 ng/L 2.0 Y Y (NEtFOSAA) N-ethyl perfluorooctanesulfonamidoacetic acid 441 ng/L 2.0 Y N (NFDHA) Nonafluoro-3,6-dioxaheptanoic acid 453 ng/L 2.0 N Y (NMeFOSAA) N-methyl perfluorooctanesulfonamidoacetic acid 442 ng/L 2.0 Y N (PFBA) Perfluorobutanoic acid 454 ng/L 2.0 N Y (PFBS) Perfluorobutanesulfonic acid 429 ng/L 2.0 Y Y (PFDA) Perfluorodecanoic acid 436 ng/L 2.0 Y Y (PFDoA) Perfluorododecanoic acid 438 ng/L 2.0 Y Y (PFEESA) Perfluoro(2-ethoxyethane)sulfonic acid 460 ng/L 2.0 N Y (PFHpA) Perfluoroheptanoic acid 430 ng/L 2.0 Y Y (PFHpS) Perfluoroheptanesulfonic acid 455 ng/L 2.0 N Y (PFHxA) Perfluorohexanoic acid 435 ng/L 2.0 Y Y (PFHxS) Perfluorohexanesulfonic acid 431 ng/L 2.0 Y Y (PFMBA) Perfluoro-4-methoxybutanoic acid 456 ng/L 2.0 N Y (PFMPA) Perfluoro-3-methoxypropanoic acid 457 ng/L 2.0 N Y (PFNA) Perfluorononanoic acid 432 ng/L 2.0 Y Y (PFOA) Perfluorooctanoic acid 434 ng/L 2.0 Y Y (PFOS) Perfluorooctanesulfonic acid 433 ng/L 2.0 Y Y (PFPeA) Perfluoropentanoic acid 458 ng/L 2.0 N Y (PFPeS) Perfluoropentanesulfonic acid 459 ng/L 2.0 N Y (PFTA) Perfluorotetradecanoic acid 440 ng/L 2.0 Y N (PFTrDA) Perfluorotridecanoic acid 439 ng/L 2.0 Y N (PFUnA) Perfluoroundecanoic acid 437 ng/L 2.0 Y Y Contaminant Name Contaminant Number Units SDRL 3 Required Contaminant List for EPA 537.1 version 2 (3/20) 4 Required Contaminant List for EPA 533 (11Cl-PF3OUdS) 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid 448 ng/L 2.0 Y Y (4:2FTS) 1H,1H, 2H, 2H-Perfluorohexane sulfonic acid 450 ng/L 2.0 N Y (6:2FTS) 1H,1H, 2H, 2H-Perfluorooctane sulfonic acid 451 ng/L 2.0 N Y (8:2FTS) 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid 452 ng/L 2.0 N Y (9Cl-PF3ONS) 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 446 ng/L 2.0 Y Y (ADONA) 4,8-Dioxa-3H-perfluorononanoic acid 445 ng/L 2.0 Y Y (HFPO-DA) Hexafluoropropylene oxide dimer acid 447 ng/L 2.0 Y Y (NEtFOSAA) N-ethyl perfluorooctanesulfonamidoacetic acid 441 ng/L 2.0 Y N (NFDHA) Nonafluoro-3,6-dioxaheptanoic acid 453 ng/L 2.0 N Y (NMeFOSAA) N-methyl perfluorooctanesulfonamidoacetic acid 442 ng/L 2.0 Y N (PFBA) Perfluorobutanoic acid 454 ng/L 2.0 N Y (PFBS) Perfluorobutanesulfonic acid 429 ng/L 2.0 Y Y (PFDA) Perfluorodecanoic acid 436 ng/L 2.0 Y Y (PFDoA) Perfluorododecanoic acid 438 ng/L 2.0 Y Y (PFEESA) Perfluoro(2-ethoxyethane)sulfonic acid 460 ng/L 2.0 N Y (PFHpA) Perfluoroheptanoic acid 430 ng/L 2.0 Y Y (PFHpS) Perfluoroheptanesulfonic acid 455 ng/L 2.0 N Y (PFHxA) Perfluorohexanoic acid 435 ng/L 2.0 Y Y (PFHxS) Perfluorohexanesulfonic acid 431 ng/L 2.0 Y Y (PFMBA) Perfluoro-4-methoxybutanoic acid 456 ng/L 2.0 N Y (PFMPA) Perfluoro-3-methoxypropanoic acid 457 ng/L 2.0 N Y (PFNA) Perfluorononanoic acid 432 ng/L 2.0 Y Y (PFOA) Perfluorooctanoic acid 434 ng/L 2.0 Y Y (PFOS) Perfluorooctanesulfonic acid 433 ng/L 2.0 Y Y (PFPeA) Perfluoropentanoic acid 458 ng/L 2.0 N Y (PFPeS) Perfluoropentanesulfonic acid 459 ng/L 2.0 N Y (PFTA) Perfluorotetradecanoic acid 440 ng/L 2.0 Y N (PFTrDA) Perfluorotridecanoic acid 439 ng/L 2.0 Y N (PFUnA) Perfluoroundecanoic acid 437 ng/L 2.0 Y Y 3 For a water system to qualify for a monitoring waiver these contaminants must be reported to the department if analyzing the sample using EPA method 537.1 version 2 (3/20). 4 For a water system to qualify for a monitoring waiver these contaminants must be reported to the department if analyzing the sample using EPA method 533.
WAC 246-390-075: WAC 246-390-075. Reporting | Justis AI