Date:05-19-2025STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:1910036SYSTEM NAME:CALIFORNIA WATER SERVICE CO. - ELACOUNTY:LOS ANGELES 
SOURCE NO.:055SOURCE NAME:WELL 39-02SOURCE CLASS:LGLNSTATUS: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
CA1910036_055_055 SECONDARY/GP 1994 AGGRESSIVE INDEX 11.800 AGGR 01-23-2024 36 2027/01
CA1910036_055_055 SECONDARY/GP 1928 ALKALINITY, BICARBONATE 200.000 3.000 MG/L 01-23-2024 36 2027/01
CA1910036_055_055 SECONDARY/GP 1919 CALCIUM 75.000 1.000 MG/L 04-09-2025 36 2028/04
CA1910036_055_055 SECONDARY/GP 1929 ALKALINITY, CARBONATE < 3.000 MG/L 01-23-2024 36 2027/01
CA1910036_055_055 SECONDARY/GP 1017 CHLORIDE 92.000 1.000 MG/L 500 01-23-2024 36 2027/01
CA1910036_055_055 SECONDARY/GP 1905 COLOR < 5.000 UNITS 15 01-23-2024 36 2027/01
CA1910036_055_055 SECONDARY/GP 1022 COPPER, FREE < 20.000 UG/L 1000 50 04-09-2025 36 2028/04
CA1910036_055_055 SECONDARY/GP 2905 FOAMING AGENTS (SURFACTANTS) < 0.050 MG/L .5 01-23-2024 36 2027/01
CA1910036_055_055 SECONDARY/GP 1915 HARDNESS, TOTAL (AS CACO3) 260.000 0.410 MG/L 01-23-2024 36 2027/01
CA1910036_055_055 SECONDARY/GP 1021 HYDROXIDE AS CALCIUM CARBONATE < 3.000 MG/L 01-23-2024 36 2027/01
CA1910036_055_055 SECONDARY/GP 1028 IRON 24.000 20.000 UG/L 300 04-09-2025 36 2028/04
CA1910036_055_055 SECONDARY/GP 1031 MAGNESIUM 19.000 1.000 MG/L 04-09-2025 36 2028/04
CA1910036_055_055 SECONDARY/GP 1032 MANGANESE 76.000 20.000 UG/L 50 04-09-2025 36 2028/04
CA1910036_055_055 SECONDARY/GP 1920 ODOR < 1.000 TON 3 1 01-23-2024 36 2027/01
CA1910036_055_055 SECONDARY/GP C253 PH, FIELD 7.200 pH 01-23-2024 36 2027/01
CA1910036_055_055 SECONDARY/GP 1050 SILVER < 10.000 UG/L 100 10 01-23-2024 36 2027/01
CA1910036_055_055 SECONDARY/GP 1052 SODIUM 80.000 1.000 MG/L 04-09-2025 36 2028/04
CA1910036_055_055 SECONDARY/GP 1064 CONDUCTIVITY @ 25 C UMHOS/CM 860.000 5.000 UMHO/CM 1600 01-29-2025 36 2028/01
CA1910036_055_055 SECONDARY/GP 1055 SULFATE 93.000 1.000 MG/L 500 01-23-2024 36 2027/01
CA1910036_055_055 SECONDARY/GP 1930 TDS 520.000 5.000 MG/L 1000 01-23-2024 36 2027/01
CA1910036_055_055 SECONDARY/GP 0100 TURBIDITY 0.210 0.100 NTU 5 .1 01-23-2024 36 2027/01
CA1910036_055_055 SECONDARY/GP 1095 ZINC < 50.000 UG/L 5000 50 04-09-2025 36 2028/04
CA1910036_055_055 INORGANIC 1002 ALUMINUM < 50.000 UG/L 1000 50 04-09-2025 36 2028/04
CA1910036_055_055 INORGANIC 1074 ANTIMONY, TOTAL < 1.000 UG/L 6 6 04-09-2025 36 2028/04
CA1910036_055_055 INORGANIC 1005 ARSENIC 1.400 1.000 UG/L 10 2 04-09-2025 36 2028/04
CA1910036_055_055 INORGANIC 1010 BARIUM 160.000 50.000 UG/L 1000 100 04-09-2025 36 2028/04
CA1910036_055_055 INORGANIC 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 04-09-2025 36 2028/04
CA1910036_055_055 INORGANIC 1015 CADMIUM < 1.000 UG/L 5 1 04-09-2025 36 2028/04
CA1910036_055_055 INORGANIC 1020 CHROMIUM 1.400 1.000 UG/L 50 10 04-09-2025 36 2028/04
CA1910036_055_055 INORGANIC 1080 CHROMIUM, HEX 0.390 0.020 UG/L 10 .1 02-04-2025 36 2028/02
CA1910036_055_055 INORGANIC 1024 CYANIDE < 5.000 UG/L 150 100 01-23-2024 36 2027/01
CA1910036_055_055 INORGANIC 1025 FLUORIDE 0.300 0.100 MG/L 2 .1 01-22-2025 36 2028/01
CA1910036_055_055 INORGANIC 1035 MERCURY < 0.200 UG/L 2 1 01-23-2024 36 2027/01
CA1910036_055_055 INORGANIC 1036 NICKEL < 1.000 UG/L 100 10 04-09-2025 36 2028/04
CA1910036_055_055 INORGANIC 1039 PERCHLORATE < 1.000 UG/L 6 1 01-29-2025 12 2026/01
CA1910036_055_055 INORGANIC 1045 SELENIUM 1.300 1.000 UG/L 50 5 04-09-2025 36 2028/04
CA1910036_055_055 INORGANIC 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 04-09-2025 36 2028/04
CA1910036_055_055 NITRATE/NITRITE 1040 NITRATE 1.700 0.400 MG/L 10 .4 01-22-2025 12 2026/01
CA1910036_055_055 NITRATE/NITRITE 1041 NITRITE < 0.400 MG/L 1 .4 01-22-2025 36 2028/01
CA1910036_055_055 RADIOLOGICAL 4109 GROSS ALPHA PARTICLE ACTIVITY 2.310 +/- 1.400 1.150 PCI/L 15 3 01-08-2025 72 2031/01
CA1910036_055_055 REGULATED VOC 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2990 BENZENE < 0.500 UG/L 1 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2251 METHYL TERT-BUTYL ETHER < 0.500 UG/L 13 3 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2996 STYRENE < 0.500 UG/L 100 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2987 TETRACHLOROETHYLENE 1.400 0.500 UG/L 5 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2991 TOLUENE < 0.500 UG/L 150 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2984 TRICHLOROETHYLENE 1.600 0.500 UG/L 5 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2218 TRICHLOROFLUOROMETHANE < 0.500 UG/L 150 5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2904 TRICHLOROTRIFLUOROETHANE < 0.500 UG/L 1200 10 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED VOC 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 04-16-2025 12 2026/04
CA1910036_055_055 REGULATED SOC 2414 1,2,3-TRICHLOROPROPANE < 0.001 UG/L 0.005 07-22-2024 33 2027/04
CA1910036_055_055 REGULATED SOC 2050 ATRAZINE < 0.500 UG/L 1 .5 07-24-2024 33 2027/04
CA1910036_055_055 REGULATED SOC 2306 BENZO(A)PYRENE < 0.100 UG/L .2 .1 07-24-2024 33 2027/04
CA1910036_055_055 REGULATED SOC 2959 CHLORDANE < 0.100 UG/L .1 .1 07-24-2024 33 2027/04
CA1910036_055_055 REGULATED SOC 2039 DI(2-ETHYLHEXYL) PHTHALATE < 3.000 UG/L 4 3 07-24-2024 33 2027/04
CA1910036_055_055 REGULATED SOC 2931 1,2-DIBROMO-3-CHLOROPROPANE < 0.010 UG/L .2 .01 09-17-2024 33 2027/06
CA1910036_055_055 REGULATED SOC 2946 ETHYLENE DIBROMIDE < 0.020 UG/L .05 .02 09-17-2024 33 2027/06
CA1910036_055_055 REGULATED SOC 2015 METHOXYCHLOR < 10.000 UG/L 30 10 07-24-2024 33 2027/04
CA1910036_055_055 REGULATED SOC 2326 PENTACHLOROPHENOL < 0.200 UG/L 1 .2 07-24-2024 33 2027/04
CA1910036_055_055 REGULATED SOC 2037 SIMAZINE < 1.000 UG/L 4 1 07-24-2024 33 2027/04
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.