Date:06-22-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:1910223SYSTEM NAME:GSWC-SOUTH SAN GABRIELCOUNTY:LOS ANGELES 
SOURCE NO.:004SOURCE NAME:SAN GABRIEL WELL 01 - ACTIVESOURCE CLASS:LGLJSTATUS: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
CA1910223_004_004 SECONDARY/GP-202509 1928 ALKALINITY, BICARBONATE 220.000 6.100 MG/L 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1919 CALCIUM 61.000 0.500 MG/L 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1929 ALKALINITY, CARBONATE < 5.000 MG/L 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1017 CHLORIDE 39.000 0.500 MG/L 500 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1905 COLOR < 3.000 UNITS 15 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1022 COPPER, FREE 1.300 1.000 UG/L 1000 50 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 2905 FOAMING AGENTS (SURFACTANTS) < 0.050 MG/L .5 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1915 HARDNESS, TOTAL (AS CACO3) 232.000 3.310 MG/L 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1021 HYDROXIDE AS CALCIUM CARBONATE < 5.000 MG/L 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1028 IRON < 30.000 UG/L 300 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1031 MAGNESIUM 19.400 0.500 MG/L 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1032 MANGANESE < 1.000 UG/L 50 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1920 ODOR < 1.000 TON 3 1 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1925 PH 7.800 0.100 pH 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1050 SILVER < 0.200 UG/L 100 10 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1052 SODIUM 37.000 1.000 MG/L 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1064 CONDUCTIVITY @ 25 C UMHOS/CM 640.000 2.000 UMHO/CM 1600 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1055 SULFATE 76.000 0.500 MG/L 500 .5 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202608 1930 TDS 390.000 10.000 MG/L 1000 08-17-2023 36 2026/08
CA1910223_004_004 SECONDARY/GP-202509 0100 TURBIDITY 0.100 0.100 NTU 5 .1 09-15-2022 36 2025/09
CA1910223_004_004 SECONDARY/GP-202509 1095 ZINC < 10.000 UG/L 5000 50 09-15-2022 36 2025/09
CA1910223_004_004 INORGANIC-202509 1002 ALUMINUM < 20.000 UG/L 1000 50 09-15-2022 36 2025/09
CA1910223_004_004 INORGANIC-202509 1074 ANTIMONY, TOTAL < 0.500 UG/L 6 6 09-15-2022 36 2025/09
CA1910223_004_004 INORGANIC-202509 1005 ARSENIC < 0.500 UG/L 10 2 09-15-2022 36 2025/09
CA1910223_004_004 INORGANIC-202509 1010 BARIUM 53.000 1.000 UG/L 1000 100 09-15-2022 36 2025/09
CA1910223_004_004 INORGANIC-202509 1075 BERYLLIUM, TOTAL < 0.100 UG/L 4 1 09-15-2022 36 2025/09
CA1910223_004_004 INORGANIC-202509 1015 CADMIUM < 0.500 UG/L 5 1 09-15-2022 36 2025/09
CA1910223_004_004 INORGANIC-202705 1020 CHROMIUM < 10.000 UG/L 50 10 05-14-2024 36 2027/05
CA1910223_004_004 INORGANIC-202509 1024 CYANIDE < 5.000 UG/L 150 100 09-15-2022 36 2025/09
CA1910223_004_004 INORGANIC-202509 1025 FLUORIDE 0.560 0.100 MG/L 2 .1 09-15-2022 36 2025/09
CA1910223_004_004 INORGANIC-202509 1035 MERCURY < 0.050 UG/L 2 1 09-15-2022 36 2025/09
CA1910223_004_004 INORGANIC-202509 1036 NICKEL < 2.000 UG/L 100 10 09-15-2022 36 2025/09
CA1910223_004_004 INORGANIC-202706 1039 PERCHLORATE < 1.000 UG/L 6 1 06-11-2024 36 2027/06
CA1910223_004_004 INORGANIC-202509 1045 SELENIUM < 0.500 UG/L 50 5 09-15-2022 36 2025/09
CA1910223_004_004 INORGANIC-202509 1085 THALLIUM, TOTAL < 0.200 UG/L 2 1 09-15-2022 36 2025/09
CA1910223_004_004 NITRATE/NITRITE-202506 1040 NITRATE 2.100 0.400 MG/L 10 .4 06-11-2024 12 2025/06
CA1910223_004_004 NITRATE/NITRITE-202509 1041 NITRITE < 0.100 MG/L 1 .4 09-15-2022 36 2025/09
CA1910223_004_004 RADIOLOGICAL-202905 4109 GROSS ALPHA PARTICLE ACTIVITY < PCI/L 15 3 05-20-2020 108 2029/05
CA1910223_004_004 RADIOLOGICAL-201405 4020 RADIUM-226 < 0.238 PCI/L 1 05-17-2023 108 2014/05 DUE NOW
CA1910223_004_004 RADIOLOGICAL-203205 4030 RADIUM-228 < 0.652 PCI/L 1 05-17-2023 108 2032/05
CA1910223_004_004 RADIOLOGICAL-202905 4006 COMBINED URANIUM 3.100 +/- 0.000 0.130 PCI/L 20 1 05-17-2023 72 2029/05
CA1910223_004_004 REGULATED VOC-202407 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2990 BENZENE < 0.500 UG/L 1 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2251 METHYL TERT-BUTYL ETHER < 3.000 UG/L 13 3 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2996 STYRENE < 0.500 UG/L 100 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2987 TETRACHLOROETHYLENE 11.000 0.500 UG/L 5 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2991 TOLUENE < 0.500 UG/L 150 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2984 TRICHLOROETHYLENE 0.990 0.500 UG/L 5 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2218 TRICHLOROFLUOROMETHANE < 5.000 UG/L 150 5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2904 TRICHLOROTRIFLUOROETHANE < 10.000 UG/L 1200 10 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED VOC-202407 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 06-11-2024 1 2024/07
CA1910223_004_004 REGULATED SOC-202412 2414 1,2,3-TRICHLOROPROPANE < 0.005 UG/L 0.005 12-20-2023 12 2024/12
CA1910223_004_004 REGULATED SOC-202502 2039 DI(2-ETHYLHEXYL) PHTHALATE < 3.000 UG/L 4 3 05-11-2022 33 2025/02
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.