Date:05-03-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:1910004SYSTEM NAME:GSWC - ARTESIACOUNTY:LOS ANGELES 
SOURCE NO.:051SOURCE NAME:CENTRALIA WELL #7SOURCE CLASS:LGLKSTATUS: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
CA1910004_051_051 SECONDARY/GP-202603 1928 ALKALINITY, BICARBONATE 230.000 6.100 MG/L 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1919 CALCIUM 44.800 0.500 MG/L 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1929 ALKALINITY, CARBONATE < 5.000 MG/L 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1017 CHLORIDE 13.000 0.500 MG/L 500 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1905 COLOR < 3.000 UNITS 15 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1022 COPPER, FREE < 1.000 UG/L 1000 50 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 2905 FOAMING AGENTS (SURFACTANTS) < 0.050 MG/L .5 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1915 HARDNESS, TOTAL (AS CACO3) 135.000 3.310 MG/L 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1021 HYDROXIDE AS CALCIUM CARBONATE < 5.000 MG/L 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1028 IRON 75.000 30.000 UG/L 300 100 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1031 MAGNESIUM 5.510 0.500 MG/L 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202704 1032 MANGANESE 31.000 1.000 UG/L 50 20 04-02-2024 36 2027/04
CA1910004_051_051 SECONDARY/GP-202603 1920 ODOR < 1.000 TON 3 1 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1925 PH 8.040 0.100 pH 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1050 SILVER < 0.200 UG/L 100 10 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1052 SODIUM 38.000 1.000 MG/L 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1064 CONDUCTIVITY @ 25 C UMHOS/CM 430.000 2.000 UMHO/CM 1600 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1055 SULFATE 41.000 0.500 MG/L 500 .5 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1930 TDS 260.000 10.000 MG/L 1000 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 0100 TURBIDITY 0.200 0.100 NTU 5 .1 03-01-2023 36 2026/03
CA1910004_051_051 SECONDARY/GP-202603 1095 ZINC < 10.000 UG/L 5000 50 03-01-2023 36 2026/03
CA1910004_051_051 INORGANIC-202603 1002 ALUMINUM < 20.000 UG/L 1000 50 03-01-2023 36 2026/03
CA1910004_051_051 INORGANIC-202603 1074 ANTIMONY, TOTAL < 0.500 UG/L 6 6 03-01-2023 36 2026/03
CA1910004_051_051 INORGANIC-202603 1005 ARSENIC 5.700 0.500 UG/L 10 2 03-01-2023 36 2026/03
CA1910004_051_051 INORGANIC-202603 1010 BARIUM 110.000 1.000 UG/L 1000 100 03-01-2023 36 2026/03
CA1910004_051_051 INORGANIC-202603 1075 BERYLLIUM, TOTAL < 0.100 UG/L 4 1 03-01-2023 36 2026/03
CA1910004_051_051 INORGANIC-202603 1015 CADMIUM < 0.500 UG/L 5 1 03-01-2023 36 2026/03
CA1910004_051_051 INORGANIC-202603 1020 CHROMIUM < 2.000 UG/L 50 10 03-01-2023 36 2026/03
CA1910004_051_051 INORGANIC-202603 1024 CYANIDE < 5.000 UG/L 150 100 03-01-2023 36 2026/03
CA1910004_051_051 INORGANIC-202603 1025 FLUORIDE 0.300 0.100 MG/L 2 .1 03-01-2023 36 2026/03
CA1910004_051_051 INORGANIC-202603 1035 MERCURY < 0.050 UG/L 2 1 03-01-2023 36 2026/03
CA1910004_051_051 INORGANIC-202603 1036 NICKEL < 2.000 UG/L 100 10 03-01-2023 36 2026/03
CA1910004_051_051 INORGANIC-202702 1039 PERCHLORATE 1.900 1.000 UG/L 6 1 02-21-2024 36 2027/02
CA1910004_051_051 INORGANIC-202603 1045 SELENIUM < 0.500 UG/L 50 5 03-01-2023 36 2026/03
CA1910004_051_051 INORGANIC-202603 1085 THALLIUM, TOTAL < 0.200 UG/L 2 1 03-01-2023 36 2026/03
CA1910004_051_051 NITRATE/NITRITE-202502 1040 NITRATE 3.700 0.200 MG/L 10 .4 02-21-2024 12 2025/02
CA1910004_051_051 NITRATE/NITRITE-202603 1041 NITRITE < 0.100 MG/L 1 .4 03-01-2023 36 2026/03
CA1910004_051_051 RADIOLOGICAL-202711 4109 GROSS ALPHA PARTICLE ACTIVITY < 1.700 PCI/L 15 3 11-05-2018 108 2027/11
CA1910004_051_051 RADIOLOGICAL-202711 4020 RADIUM-226 < 0.500 PCI/L 1 11-05-2018 108 2027/11
CA1910004_051_051 RADIOLOGICAL-202711 4030 RADIUM-228 < 1.000 PCI/L 1 11-05-2018 108 2027/11
CA1910004_051_051 RADIOLOGICAL-202711 4006 COMBINED URANIUM < 1.000 PCI/L 20 1 11-05-2018 108 2027/11
CA1910004_051_051 REGULATED VOC-202502 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2990 BENZENE < 0.500 UG/L 1 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2251 METHYL TERT-BUTYL ETHER < 2.000 UG/L 13 3 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2996 STYRENE < 0.500 UG/L 100 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2991 TOLUENE < 0.500 UG/L 150 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2218 TRICHLOROFLUOROMETHANE < 0.500 UG/L 150 5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2904 TRICHLOROTRIFLUOROETHANE < 5.000 UG/L 1200 10 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED VOC-202502 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 02-21-2024 12 2025/02
CA1910004_051_051 REGULATED SOC-202406 2414 1,2,3-TRICHLOROPROPANE < 0.005 UG/L 0.005 09-08-2021 33 2024/06
CA1910004_051_051 REGULATED SOC-201806 2050 ATRAZINE < 0.500 UG/L 1 .5 03-19-2018 3 2018/06 DUE NOW
CA1910004_051_051 REGULATED SOC-202406 2039 DI(2-ETHYLHEXYL) PHTHALATE < 0.600 UG/L 4 3 09-08-2021 33 2024/06
CA1910004_051_051 REGULATED SOC-201806 2931 1,2-DIBROMO-3-CHLOROPROPANE < UG/L .2 .01 03-19-2018 3 2018/06 DUE NOW
CA1910004_051_051 REGULATED SOC-201806 2037 SIMAZINE < 1.000 UG/L 4 1 03-19-2018 3 2018/06 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.