Date:05-19-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:4310001SYSTEM NAME:CWSC LOS ALTOS SUBURBANCOUNTY:SANTA CLARA 
SOURCE NO.:029SOURCE NAME:WELL 116-01SOURCE 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_029_029 SECONDARY/GP-202509 1928 ALKALINITY, BICARBONATE 290.000 3.000 MG/L 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1919 CALCIUM 76.000 0.100 MG/L 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1929 ALKALINITY, CARBONATE < 3.000 MG/L 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1017 CHLORIDE 37.000 1.000 MG/L 500 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1905 COLOR 5.000 5.000 UNITS 15 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1022 COPPER, FREE < 5.000 UG/L 1000 50 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 2905 FOAMING AGENTS (SURFACTANTS) < 0.050 MG/L .5 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1915 HARDNESS, TOTAL (AS CACO3) 310.000 0.410 MG/L 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1021 HYDROXIDE AS CALCIUM CARBONATE < 3.000 MG/L 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1028 IRON < 30.000 UG/L 300 100 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1031 MAGNESIUM 30.000 0.100 MG/L 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1032 MANGANESE < 10.000 UG/L 50 20 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1920 ODOR < 1.000 TON 3 1 09-13-2022 36 2025/09
CA4310001_029_029 GENERAL NON CHAP 15-202509 C253 PH, FIELD 7.670 pH 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1050 SILVER < 10.000 UG/L 100 10 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1052 SODIUM 30.000 1.000 MG/L 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1064 CONDUCTIVITY @ 25 C UMHOS/CM 690.000 1.000 UMHO/CM 1600 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1055 SULFATE 23.000 1.000 MG/L 500 .5 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1930 TDS 410.000 5.000 MG/L 1000 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 0100 TURBIDITY 0.240 0.100 NTU 5 .1 09-13-2022 36 2025/09
CA4310001_029_029 SECONDARY/GP-202509 1095 ZINC < 50.000 UG/L 5000 50 09-13-2022 36 2025/09
CA4310001_029_029 INORGANIC-202509 1002 ALUMINUM < 50.000 UG/L 1000 50 09-13-2022 36 2025/09
CA4310001_029_029 INORGANIC-202509 1074 ANTIMONY, TOTAL < 2.000 UG/L 6 6 09-13-2022 36 2025/09
CA4310001_029_029 INORGANIC-202509 1005 ARSENIC < 2.000 UG/L 10 2 09-13-2022 36 2025/09
CA4310001_029_029 INORGANIC-202401 1094 ASBESTOS < 0.200 MFL 7 .2 01-14-2015 108 2024/01 DUE NOW
CA4310001_029_029 INORGANIC-202509 1010 BARIUM < 50.000 UG/L 1000 100 09-13-2022 36 2025/09
CA4310001_029_029 INORGANIC-202509 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 09-13-2022 36 2025/09
CA4310001_029_029 INORGANIC-202509 1015 CADMIUM < 1.000 UG/L 5 1 09-13-2022 36 2025/09
CA4310001_029_029 INORGANIC-202509 1020 CHROMIUM < 10.000 UG/L 50 10 09-13-2022 36 2025/09
CA4310001_029_029 INORGANIC-202509 1024 CYANIDE < 5.000 UG/L 150 100 09-13-2022 36 2025/09
CA4310001_029_029 INORGANIC-202509 1025 FLUORIDE < 0.100 MG/L 2 .1 09-13-2022 36 2025/09
CA4310001_029_029 INORGANIC-202509 1035 MERCURY < 0.200 UG/L 2 1 09-13-2022 36 2025/09
CA4310001_029_029 INORGANIC-202509 1036 NICKEL < 10.000 UG/L 100 10 09-13-2022 36 2025/09
CA4310001_029_029 INORGANIC-202509 1039 PERCHLORATE < 0.500 UG/L 6 2 09-13-2022 36 2025/09
CA4310001_029_029 INORGANIC-202509 1045 SELENIUM < 2.000 UG/L 50 5 09-13-2022 36 2025/09
CA4310001_029_029 INORGANIC-202509 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 09-13-2022 36 2025/09
CA4310001_029_029 NITRATE/NITRITE-202501 1040 NITRATE 2.000 0.400 MG/L 10 .4 01-23-2024 12 2025/01
CA4310001_029_029 NITRATE/NITRITE-202702 1041 NITRITE < 0.050 MG/L 1 .4 02-12-2024 36 2027/02
CA4310001_029_029 RADIOLOGICAL-203009 4109 GROSS ALPHA PARTICLE ACTIVITY < 3.000 PCI/L 15 3 09-14-2021 108 2030/09
CA4310001_029_029 REGULATED VOC-202407 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2990 BENZENE < 0.500 UG/L 1 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2251 METHYL TERT-BUTYL ETHER < 3.000 UG/L 13 3 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2996 STYRENE < 0.500 UG/L 100 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2991 TOLUENE < 0.500 UG/L 150 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2218 TRICHLOROFLUOROMETHANE < 5.000 UG/L 150 5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2904 TRICHLOROTRIFLUOROETHANE < 10.000 UG/L 1200 10 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED VOC-202407 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 07-07-2021 36 2024/07
CA4310001_029_029 REGULATED SOC-202609 2414 1,2,3-TRICHLOROPROPANE < 0.002 UG/L 0.005 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2063 2,3,7,8-TCDD < 0.005 NG/L 0.03 0.005 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2110 2,4,5-TP < 1.000 UG/L 50 1 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2105 2,4-D < 10.000 UG/L 70 10 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2051 LASSO (ALACHLOR) < 1.000 UG/L 2 1 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2050 ATRAZINE < 0.500 UG/L 1 .5 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2625 BENTAZON < 2.000 UG/L 18 2 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2306 BENZO(A)PYRENE < 0.100 UG/L .2 .1 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2046 CARBOFURAN < 5.000 UG/L 18 5 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2959 CHLORDANE < 0.100 UG/L .1 .1 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2031 DALAPON < 10.000 UG/L 200 10 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2035 DI(2-ETHYLHEXYL) ADIPATE < 5.000 UG/L 400 5 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2039 DI(2-ETHYLHEXYL) PHTHALATE < 3.000 UG/L 4 3 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202602 2931 1,2-DIBROMO-3-CHLOROPROPANE < 0.010 UG/L .2 .01 05-17-2023 33 2026/02
CA4310001_029_029 REGULATED SOC-202609 2041 DINOSEB < 2.000 UG/L 7 2 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2032 DIQUAT < 4.000 UG/L 20 4 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2033 ENDOTHALL < 45.000 UG/L 100 45 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2005 ENDRIN < 0.100 UG/L 2 .1 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202602 2946 ETHYLENE DIBROMIDE < 0.020 UG/L .05 .02 05-17-2023 33 2026/02
CA4310001_029_029 REGULATED SOC-202610 2034 GLYPHOSATE < 25.000 UG/L 700 25 01-10-2024 33 2026/10
CA4310001_029_029 REGULATED SOC-202609 2065 HEPTACHLOR < 0.010 UG/L .01 .01 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2067 HEPTACHLOR EPOXIDE < 0.010 UG/L .01 .01 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2274 HEXACHLOROBENZENE < 0.500 UG/L 1 .5 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2042 HEXACHLOROCYCLOPENTADIENE < 1.000 UG/L 50 1 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2010 BHC-GAMMA < 0.200 UG/L .2 .2 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2015 METHOXYCHLOR < 10.000 UG/L 30 10 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2626 MOLINATE < 2.000 UG/L 20 2 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2036 OXAMYL < 20.000 UG/L 50 20 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2326 PENTACHLOROPHENOL < 0.200 UG/L 1 .2 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2040 PICLORAM < 1.000 UG/L 500 1 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2383 TOTAL POLYCHLORINATED BIPHENYLS (PCB) < 0.500 UG/L .5 .5 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2037 SIMAZINE < 1.000 UG/L 4 1 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2727 THIOBENCARB (BOLERO) < 1.000 UG/L 70 1 12-19-2023 33 2026/09
CA4310001_029_029 REGULATED SOC-202609 2020 TOXAPHENE < 1.000 UG/L 3 1 12-19-2023 33 2026/09
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.