Date:05-19-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:4310001SYSTEM NAME:CWSC LOS ALTOS SUBURBANCOUNTY:SANTA CLARA 
SOURCE NO.:030SOURCE NAME:WELL 119-03SOURCE CLASS:CLGSSTATUS: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
CA4310001_030_030 SECONDARY/GP-202503 1928 ALKALINITY, BICARBONATE 300.000 3.000 MG/L 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1919 CALCIUM 83.000 0.100 MG/L 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1929 ALKALINITY, CARBONATE < 3.000 MG/L 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1017 CHLORIDE 42.000 1.000 MG/L 500 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1905 COLOR < 5.000 UNITS 15 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1022 COPPER, FREE < 5.000 UG/L 1000 50 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 2905 FOAMING AGENTS (SURFACTANTS) < 0.050 MG/L .5 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1915 HARDNESS, TOTAL (AS CACO3) 300.000 0.410 MG/L 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1021 HYDROXIDE AS CALCIUM CARBONATE < 3.000 MG/L 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1028 IRON < 30.000 UG/L 300 100 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1031 MAGNESIUM 23.000 0.100 MG/L 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1032 MANGANESE < 10.000 UG/L 50 20 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1920 ODOR < 1.000 TON 3 1 03-09-2022 36 2025/03
CA4310001_030_030 GENERAL NON CHAP 15-202503 C253 PH, FIELD 7.470 pH 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1050 SILVER < 10.000 UG/L 100 10 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1052 SODIUM 44.000 1.000 MG/L 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1064 CONDUCTIVITY @ 25 C UMHOS/CM 770.000 1.000 UMHO/CM 1600 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1055 SULFATE 27.000 1.000 MG/L 500 .5 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1930 TDS 450.000 5.000 MG/L 1000 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 0100 TURBIDITY 0.250 0.100 NTU 5 .1 03-09-2022 36 2025/03
CA4310001_030_030 SECONDARY/GP-202503 1095 ZINC < 50.000 UG/L 5000 50 03-09-2022 36 2025/03
CA4310001_030_030 INORGANIC-202503 1002 ALUMINUM < 50.000 UG/L 1000 50 03-09-2022 36 2025/03
CA4310001_030_030 INORGANIC-202503 1074 ANTIMONY, TOTAL < 2.000 UG/L 6 6 03-09-2022 36 2025/03
CA4310001_030_030 INORGANIC-202503 1005 ARSENIC < 2.000 UG/L 10 2 03-09-2022 36 2025/03
CA4310001_030_030 INORGANIC-202401 1094 ASBESTOS < 0.200 MFL 7 .2 01-14-2015 108 2024/01 DUE NOW
CA4310001_030_030 INORGANIC-202503 1010 BARIUM 81.000 50.000 UG/L 1000 100 03-09-2022 36 2025/03
CA4310001_030_030 INORGANIC-202503 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 03-09-2022 36 2025/03
CA4310001_030_030 INORGANIC-202503 1015 CADMIUM < 1.000 UG/L 5 1 03-09-2022 36 2025/03
CA4310001_030_030 INORGANIC-202503 1020 CHROMIUM < 10.000 UG/L 50 10 03-09-2022 36 2025/03
CA4310001_030_030 INORGANIC-202503 1024 CYANIDE < 5.000 UG/L 150 100 03-09-2022 36 2025/03
CA4310001_030_030 INORGANIC-202503 1025 FLUORIDE < 0.100 MG/L 2 .1 03-09-2022 36 2025/03
CA4310001_030_030 INORGANIC-202503 1035 MERCURY < 0.200 UG/L 2 1 03-09-2022 36 2025/03
CA4310001_030_030 INORGANIC-202503 1036 NICKEL < 10.000 UG/L 100 10 03-09-2022 36 2025/03
CA4310001_030_030 INORGANIC-202503 1039 PERCHLORATE < 2.000 UG/L 6 2 03-09-2022 36 2025/03
CA4310001_030_030 INORGANIC-202503 1045 SELENIUM < 2.000 UG/L 50 5 03-09-2022 36 2025/03
CA4310001_030_030 INORGANIC-202503 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 03-09-2022 36 2025/03
CA4310001_030_030 NITRATE/NITRITE-202504 1040 NITRATE 3.500 0.400 MG/L 10 .4 04-03-2024 12 2025/04
CA4310001_030_030 NITRATE/NITRITE-202503 1041 NITRITE < 0.050 MG/L 1 .4 03-09-2022 36 2025/03
CA4310001_030_030 RADIOLOGICAL-203303 4109 GROSS ALPHA PARTICLE ACTIVITY 1.200 +/- 0.889 1.160 PCI/L 15 3 03-07-2024 108 2033/03
CA4310001_030_030 REGULATED VOC-202603 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2990 BENZENE < 0.500 UG/L 1 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2251 METHYL TERT-BUTYL ETHER < 0.500 UG/L 13 3 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2996 STYRENE < 0.500 UG/L 100 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2991 TOLUENE < 0.500 UG/L 150 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2218 TRICHLOROFLUOROMETHANE < 0.500 UG/L 150 5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2904 TRICHLOROTRIFLUOROETHANE < 0.500 UG/L 1200 10 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED VOC-202603 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 03-22-2023 36 2026/03
CA4310001_030_030 REGULATED SOC-202612 2414 1,2,3-TRICHLOROPROPANE < 0.002 UG/L 0.005 03-06-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2063 2,3,7,8-TCDD < 0.005 NG/L 0.03 0.005 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2110 2,4,5-TP < 1.000 UG/L 50 1 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2105 2,4-D < 10.000 UG/L 70 10 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2051 LASSO (ALACHLOR) < 1.000 UG/L 2 1 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2050 ATRAZINE < 0.500 UG/L 1 .5 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2625 BENTAZON < 2.000 UG/L 18 2 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2306 BENZO(A)PYRENE < 0.100 UG/L .2 .1 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2046 CARBOFURAN < 5.000 UG/L 18 5 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2959 CHLORDANE < 0.001 UG/L .1 .1 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2031 DALAPON < 10.000 UG/L 200 10 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2035 DI(2-ETHYLHEXYL) ADIPATE < 5.000 UG/L 400 5 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2039 DI(2-ETHYLHEXYL) PHTHALATE < 3.000 UG/L 4 3 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202603 2931 1,2-DIBROMO-3-CHLOROPROPANE < 0.010 UG/L .2 .01 06-20-2023 33 2026/03
CA4310001_030_030 REGULATED SOC-202612 2041 DINOSEB < 2.000 UG/L 7 2 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2032 DIQUAT < 4.000 UG/L 20 4 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2033 ENDOTHALL < 45.000 UG/L 100 45 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2005 ENDRIN < 0.001 UG/L 2 .1 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202603 2946 ETHYLENE DIBROMIDE < 0.020 UG/L .05 .02 06-20-2023 33 2026/03
CA4310001_030_030 REGULATED SOC-202612 2034 GLYPHOSATE < 25.000 UG/L 700 25 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2065 HEPTACHLOR < UG/L .01 .01 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2067 HEPTACHLOR EPOXIDE < UG/L .01 .01 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2274 HEXACHLOROBENZENE < 0.005 UG/L 1 .5 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2042 HEXACHLOROCYCLOPENTADIENE < 0.010 UG/L 50 1 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2010 BHC-GAMMA < 0.002 UG/L .2 .2 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2015 METHOXYCHLOR < 10.000 UG/L 30 10 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2626 MOLINATE < 2.000 UG/L 20 2 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2036 OXAMYL < 20.000 UG/L 50 20 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2326 PENTACHLOROPHENOL < 0.200 UG/L 1 .2 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2040 PICLORAM < 1.000 UG/L 500 1 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2383 TOTAL POLYCHLORINATED BIPHENYLS (PCB) < 0.005 UG/L .5 .5 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2037 SIMAZINE < 1.000 UG/L 4 1 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2727 THIOBENCARB (BOLERO) < 1.000 UG/L 70 1 03-07-2024 33 2026/12
CA4310001_030_030 REGULATED SOC-202612 2020 TOXAPHENE < 0.010 UG/L 3 1 03-07-2024 33 2026/12
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.