Date:10-05-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:1710002SYSTEM NAME:GOLDEN STATE WATER CO.-CLEARLAKE SYSTEMCOUNTY:LAKE 
SOURCE NO.:All SourcesSOURCE NAME:N/ASOURCE CLASS:N/ASTATUS:N/A



Click to hide / show columns: PS Codes | Group Name | Analyte Number | Analyte Name | Detected Level |Less Than | RL | Unit | MCL | DLR | Last Sampled | Frequency | Next Due | Notes

PS Codes Group Name Analyte Number Analyte Name Results Unit MCL DLR Last Sampled Frequency Next Due Notes
Detected Level Less Than RL
CA1710002_001_001 INORGANIC-202505 1074 ANTIMONY, TOTAL < 6.000 UG/L 6 6 05-08-2024 12 2025/05
CA1710002_001_001 INORGANIC-202505 1005 ARSENIC < 2.000 UG/L 10 2 05-08-2024 12 2025/05
CA1710002_001_001 INORGANIC-202903 1094 ASBESTOS < 0.200 MFL 7 .2 03-04-2020 108 2029/03
CA1710002_001_001 INORGANIC-202505 1010 BARIUM < 100.000 UG/L 1000 100 05-08-2024 12 2025/05
CA1710002_001_001 INORGANIC-202505 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 05-08-2024 12 2025/05
CA1710002_001_001 INORGANIC-202505 1015 CADMIUM < 1.000 UG/L 5 1 05-08-2024 12 2025/05
CA1710002_001_001 INORGANIC-202505 1020 CHROMIUM < 10.000 UG/L 50 10 05-08-2024 12 2025/05
CA1710002_001_001 INORGANIC-202505 1025 FLUORIDE 0.130 0.100 MG/L 2 .1 05-08-2024 12 2025/05
CA1710002_001_001 INORGANIC-202505 1035 MERCURY < 1.000 UG/L 2 1 05-08-2024 12 2025/05
CA1710002_001_001 INORGANIC-202505 1036 NICKEL < 10.000 UG/L 100 10 05-08-2024 12 2025/05
CA1710002_001_001 INORGANIC-202505 1039 PERCHLORATE < 1.000 UG/L 6 1 05-08-2024 12 2025/05
CA1710002_001_001 INORGANIC-202505 1045 SELENIUM < 5.000 UG/L 50 5 05-08-2024 12 2025/05
CA1710002_001_001 INORGANIC-202505 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 05-08-2024 12 2025/05
CA1710002_001_001 NITRATE/NITRITE-202507 1040 NITRATE < 0.400 MG/L 10 .4 07-10-2024 12 2025/07
CA1710002_001_001 NITRATE/NITRITE-202705 1041 NITRITE < 0.400 MG/L 1 .4 05-08-2024 36 2027/05
CA1710002_001_001 RADIOLOGICAL-203305 4109 GROSS ALPHA PARTICLE ACTIVITY < 1.840 PCI/L 15 3 05-08-2024 108 2033/05
CA1710002_001_001 REGULATED VOC-202705 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2990 BENZENE < 0.500 UG/L 1 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2996 STYRENE < 0.500 UG/L 100 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2991 TOLUENE < 0.500 UG/L 150 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2218 TRICHLOROFLUOROMETHANE < 5.000 UG/L 150 5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2904 TRICHLOROTRIFLUOROETHANE < 10.000 UG/L 1200 10 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED VOC-202705 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 05-08-2024 36 2027/05
CA1710002_001_001 REGULATED SOC-202609 2414 1,2,3-TRICHLOROPROPANE < 0.005 UG/L 0.005 09-13-2023 36 2026/09
CA1710002_001_001 REGULATED SOC-203209 2110 2,4,5-TP < 1.000 UG/L 50 1 09-13-2023 108 2032/09
CA1710002_001_001 REGULATED SOC-203209 2105 2,4-D < 10.000 UG/L 70 10 09-13-2023 108 2032/09
CA1710002_001_001 REGULATED SOC-202609 2050 ATRAZINE < 0.050 UG/L 1 .5 09-13-2023 36 2026/09
CA1710002_001_001 REGULATED SOC-202609 2046 CARBOFURAN < 5.000 UG/L 18 5 09-13-2023 36 2026/09
CA1710002_001_001 REGULATED SOC-202609 2031 DALAPON < 10.000 UG/L 200 10 09-13-2023 36 2026/09
CA1710002_001_001 REGULATED SOC-202609 2041 DINOSEB < 2.000 UG/L 7 2 09-13-2023 36 2026/09
CA1710002_001_001 REGULATED SOC-202609 2032 DIQUAT < 4.000 UG/L 20 4 09-13-2023 36 2026/09
CA1710002_001_001 REGULATED SOC-202609 2033 ENDOTHALL < 45.000 UG/L 100 45 09-13-2023 36 2026/09
CA1710002_001_001 REGULATED SOC-203209 2946 ETHYLENE DIBROMIDE < 0.020 UG/L .05 .02 09-13-2023 108 2032/09
CA1710002_001_001 REGULATED SOC-203209 2065 HEPTACHLOR < 0.010 UG/L .01 .01 09-13-2023 108 2032/09
CA1710002_001_001 REGULATED SOC-203209 2067 HEPTACHLOR EPOXIDE < 0.010 UG/L .01 .01 09-13-2023 108 2032/09
CA1710002_001_001 REGULATED SOC-203209 2010 BHC-GAMMA < 0.010 UG/L .2 .2 09-13-2023 108 2032/09
CA1710002_001_001 REGULATED SOC-203209 2015 METHOXYCHLOR < 0.050 UG/L 30 10 09-13-2023 108 2032/09
CA1710002_001_001 REGULATED SOC-202609 2036 OXAMYL < 20.000 UG/L 50 20 09-13-2023 36 2026/09
CA1710002_001_001 REGULATED SOC-202609 2326 PENTACHLOROPHENOL < 0.200 UG/L 1 .2 09-13-2023 36 2026/09
CA1710002_001_001 REGULATED SOC-202609 2040 PICLORAM < 1.000 UG/L 500 1 09-13-2023 36 2026/09
CA1710002_001_001 REGULATED SOC-202609 2037 SIMAZINE < 0.050 UG/L 4 1 09-13-2023 36 2026/09
CA1710002_001_001 REGULATED SOC-203209 2020 TOXAPHENE < 0.973 UG/L 3 1 09-13-2023 108 2032/09
CA1710002_001_001 GENERAL NON CHAP 15-202509 1927 ALKALINITY, TOTAL 170.000 2.000 MG/L 09-18-2024 12 2025/09
CA1710002_002_002 SECONDARY/GP-202509 1928 ALKALINITY, BICARBONATE 170.000 2.000 MG/L 09-18-2024 12 2025/09
CA1710002_002_002 SECONDARY/GP-202505 1919 CALCIUM 24.000 1.000 MG/L 05-08-2024 12 2025/05
CA1710002_002_002 SECONDARY/GP-202509 1929 ALKALINITY, CARBONATE < 2.000 MG/L 09-18-2024 12 2025/09
CA1710002_002_002 SECONDARY/GP-202505 1017 CHLORIDE 13.000 0.500 MG/L 500 05-08-2024 12 2025/05
CA1710002_002_002 SECONDARY/GP-202505 1905 COLOR < 2.000 UNITS 15 05-08-2024 12 2025/05
CA1710002_002_002 SECONDARY/GP-202505 1022 COPPER, FREE < 50.000 UG/L 1000 50 05-08-2024 12 2025/05
CA1710002_002_002 SECONDARY/GP-null 2905 FOAMING AGENTS (SURFACTANTS) MG/L .5 12 DUE NOW
CA1710002_002_002 SECONDARY/GP-202505 1915 HARDNESS, TOTAL (AS CACO3) 130.000 3.000 MG/L 05-08-2024 12 2025/05
CA1710002_002_002 SECONDARY/GP-202509 1021 HYDROXIDE AS CALCIUM CARBONATE < 2.000 MG/L 09-18-2024 12 2025/09
CA1710002_002_002 SECONDARY/GP-202505 1028 IRON < 10.000 UG/L 300 05-08-2024 12 2025/05
CA1710002_002_002 SECONDARY/GP-202505 1031 MAGNESIUM 18.000 0.100 MG/L 05-08-2024 12 2025/05
CA1710002_002_002 SECONDARY/GP-202505 1032 MANGANESE < 2.000 UG/L 50 05-08-2024 12 2025/05
CA1710002_002_002 SECONDARY/GP-202505 1920 ODOR 2.000 1.000 TON 3 1 05-08-2024 12 2025/05
CA1710002_002_002 SECONDARY/GP-202306 1925 PH 8.100 pH 06-15-2022 12 2023/06 DUE NOW
CA1710002_002_002 SECONDARY/GP-202505 1050 SILVER < 0.500 UG/L 100 10 05-08-2024 12 2025/05
CA1710002_002_002 SECONDARY/GP-null 1052 SODIUM MG/L 12 DUE NOW
CA1710002_002_002 SECONDARY/GP-202505 1064 CONDUCTIVITY @ 25 C UMHOS/CM 330.000 2.000 UMHO/CM 1600 05-08-2024 12 2025/05
CA1710002_002_002 SECONDARY/GP-202505 1055 SULFATE 5.400 0.250 MG/L 500 .5 05-08-2024 12 2025/05
CA1710002_002_002 SECONDARY/GP-202505 1930 TDS 180.000 20.000 MG/L 1000 05-08-2024 12 2025/05
CA1710002_002_002 SECONDARY/GP-202505 0100 TURBIDITY 0.200 0.100 NTU 5 .1 05-08-2024 12 2025/05
CA1710002_002_002 SECONDARY/GP-202505 1095 ZINC 210.000 20.000 UG/L 5000 50 05-08-2024 12 2025/05
CA1710002_002_002 INORGANIC-202505 1002 ALUMINUM < 50.000 UG/L 1000 50 05-08-2024 12 2025/05
CA1710002_002_002 REGULATED VOC-null 2251 METHYL TERT-BUTYL ETHER UG/L 13 3 12 DUE NOW
CA1710002_002_002 REGULATED SOC-null 2727 THIOBENCARB (BOLERO) UG/L 70 1 12 DUE NOW
CA1710002_DST_003 DISINFECTION BYPRODUCTS-202410 2456 TOTAL HALOACETIC ACIDS (HAA5) 35.000 6.000 UG/L 60 07-10-2024 3 2024/10 DUE NOW
CA1710002_DST_003 DISINFECTION BYPRODUCTS-202410 2950 TTHM 35.000 4.000 UG/L 80 07-10-2024 3 2024/10 DUE NOW
CA1710002_DST_007 DISINFECTION BYPRODUCTS-202410 2456 TOTAL HALOACETIC ACIDS (HAA5) 33.000 6.000 UG/L 60 07-10-2024 3 2024/10 DUE NOW
CA1710002_DST_007 DISINFECTION BYPRODUCTS-202410 2950 TTHM 31.000 4.000 UG/L 80 07-10-2024 3 2024/10 DUE NOW
PS Codes Group Name Analyte Number Analyte Name Detected Level Less Than RL Unit MCL DLR Last Sampled Frequency Next Due Notes

RL – Reporting Level means the level to which the laboratory reported the presence of an analyte. For radionuclides, Reporting Level is the MDA95.

DLR – Detection Limit for purposes of Reporting (DLR) means the designated minimum level at or above which any analytical finding of a contaminant in drinking water resulting from monitoring required under Chapter 15 of Title 22 shall be reported to the State Board (California Code of Regulations Section § 64400.34)

For addtional definitions, please refer to our data dictionary.