Date:04-22-2025STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:1910134SYSTEM NAME:CALIFORNIA WATER SERVICE CO. - HERM/REDOCOUNTY:LOS ANGELES 
SOURCE NO.:005SOURCE NAME:WELL 22-01SOURCE 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
CA1910134_005_005 SECONDARY/GP 1928 ALKALINITY, BICARBONATE 190.000 3.000 MG/L 06-11-2024 36 2027/06
CA1910134_005_005 SECONDARY/GP 1919 CALCIUM 135.000 1.000 MG/L 02-18-2025 36 2028/02
CA1910134_005_005 SECONDARY/GP 1929 ALKALINITY, CARBONATE < 3.000 MG/L 06-11-2024 36 2027/06
CA1910134_005_005 SECONDARY/GP 1017 CHLORIDE 320.000 25.000 MG/L 500 01-14-2025 36 2028/01
CA1910134_005_005 SECONDARY/GP 1905 COLOR < 5.000 UNITS 15 06-11-2024 36 2027/06
CA1910134_005_005 SECONDARY/GP 1022 COPPER, FREE < 20.000 UG/L 1000 50 02-18-2025 36 2028/02
CA1910134_005_005 SECONDARY/GP 2905 FOAMING AGENTS (SURFACTANTS) < 0.050 MG/L .5 06-11-2024 36 2027/06
CA1910134_005_005 SECONDARY/GP 1915 HARDNESS, TOTAL (AS CACO3) 480.000 0.410 MG/L 06-11-2024 36 2027/06
CA1910134_005_005 SECONDARY/GP 1021 HYDROXIDE AS CALCIUM CARBONATE < 3.000 MG/L 06-11-2024 36 2027/06
CA1910134_005_005 SECONDARY/GP 1028 IRON 65.000 20.000 UG/L 300 02-18-2025 1 2025/03 DUE NOW
CA1910134_005_005 SECONDARY/GP 1031 MAGNESIUM 39.000 1.000 MG/L 02-18-2025 36 2028/02
CA1910134_005_005 SECONDARY/GP 1032 MANGANESE 57.000 20.000 UG/L 50 02-18-2025 1 2025/03 DUE NOW
CA1910134_005_005 SECONDARY/GP 1920 ODOR < 1.000 TON 3 1 06-11-2024 36 2027/06
CA1910134_005_005 SECONDARY/GP C253 PH, FIELD 6.730 pH 04-09-2025 36 2028/04
CA1910134_005_005 SECONDARY/GP 1050 SILVER < 10.000 UG/L 100 10 06-11-2024 36 2027/06
CA1910134_005_005 SECONDARY/GP 1052 SODIUM 152.000 1.000 MG/L 02-18-2025 36 2028/02
CA1910134_005_005 SECONDARY/GP 1064 CONDUCTIVITY @ 25 C UMHOS/CM 1783.000 2.000 UMHO/CM 1600 01-14-2025 36 2028/01
CA1910134_005_005 SECONDARY/GP 1055 SULFATE 180.000 12.500 MG/L 500 01-14-2025 36 2028/01
CA1910134_005_005 SECONDARY/GP 1930 TDS 1100.000 20.000 MG/L 1000 04-09-2025 36 2028/04
CA1910134_005_005 SECONDARY/GP 0100 TURBIDITY 0.590 0.100 NTU 5 .1 06-11-2024 36 2027/06
CA1910134_005_005 SECONDARY/GP 1095 ZINC < 50.000 UG/L 5000 50 02-18-2025 36 2028/02
CA1910134_005_005 INORGANIC 1002 ALUMINUM < 50.000 UG/L 1000 50 06-11-2024 36 2027/06
CA1910134_005_005 INORGANIC 1074 ANTIMONY, TOTAL < 2.000 UG/L 6 6 06-11-2024 36 2027/06
CA1910134_005_005 INORGANIC 1005 ARSENIC < 2.000 UG/L 10 2 06-11-2024 36 2027/06
CA1910134_005_005 INORGANIC 1010 BARIUM 165.000 50.000 UG/L 1000 100 02-18-2025 36 2028/02
CA1910134_005_005 INORGANIC 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 06-11-2024 36 2027/06
CA1910134_005_005 INORGANIC 1015 CADMIUM < 1.000 UG/L 5 1 06-11-2024 36 2027/06
CA1910134_005_005 INORGANIC 1020 CHROMIUM < 10.000 UG/L 50 10 06-11-2024 36 2027/06
CA1910134_005_005 INORGANIC 1080 CHROMIUM, HEX 0.240 0.020 UG/L 10 .1 01-14-2025 36 2028/01
CA1910134_005_005 INORGANIC 1024 CYANIDE < 5.000 UG/L 150 100 06-11-2024 36 2027/06
CA1910134_005_005 INORGANIC 1025 FLUORIDE 0.300 0.100 MG/L 2 .1 06-25-2024 36 2027/06
CA1910134_005_005 INORGANIC 1035 MERCURY < 0.200 UG/L 2 1 06-11-2024 36 2027/06
CA1910134_005_005 INORGANIC 1036 NICKEL < 10.000 UG/L 100 10 06-11-2024 36 2027/06
CA1910134_005_005 INORGANIC 1039 PERCHLORATE < 1.000 UG/L 6 1 12-03-2024 36 2027/12
CA1910134_005_005 INORGANIC 1045 SELENIUM 6.900 2.000 UG/L 50 5 06-11-2024 36 2027/06
CA1910134_005_005 INORGANIC 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 06-11-2024 36 2027/06
CA1910134_005_005 NITRATE/NITRITE 1040 NITRATE 0.400 0.400 MG/L 10 .4 06-25-2024 12 2025/06
CA1910134_005_005 NITRATE/NITRITE 1041 NITRITE < 0.400 MG/L 1 .4 06-25-2024 36 2027/06
CA1910134_005_005 RADIOLOGICAL 4109 GROSS ALPHA PARTICLE ACTIVITY 3.830 +/- 1.240 1.300 PCI/L 15 3 01-31-2023 72 2029/01
CA1910134_005_005 RADIOLOGICAL 4020 RADIUM-226 < 0.045 PCI/L 1 01-31-2023 108 2032/01
CA1910134_005_005 RADIOLOGICAL 4030 RADIUM-228 < 0.303 PCI/L 1 01-31-2023 108 2032/01
CA1910134_005_005 RADIOLOGICAL 4006 COMBINED URANIUM 4.800 +/- 0.000 1.000 PCI/L 20 1 01-31-2023 72 2029/01
CA1910134_005_005 REGULATED VOC 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2990 BENZENE < 0.500 UG/L 1 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2251 METHYL TERT-BUTYL ETHER < 0.500 UG/L 13 3 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2996 STYRENE < 0.500 UG/L 100 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2991 TOLUENE < 0.500 UG/L 150 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2218 TRICHLOROFLUOROMETHANE < 0.500 UG/L 150 5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2904 TRICHLOROTRIFLUOROETHANE < 0.500 UG/L 1200 10 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED VOC 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 06-19-2024 12 2025/06
CA1910134_005_005 REGULATED SOC 2414 1,2,3-TRICHLOROPROPANE < 0.002 UG/L 0.005 09-06-2023 33 2026/06
CA1910134_005_005 REGULATED SOC 2039 DI(2-ETHYLHEXYL) PHTHALATE < 3.000 UG/L 4 3 08-16-2023 33 2026/05
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.