Date:05-19-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:4310001SYSTEM NAME:CWSC LOS ALTOS SUBURBANCOUNTY:SANTA CLARA 
SOURCE NO.:018SOURCE NAME:WELL 027-01SOURCE 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_018_018 SECONDARY/GP-202405 1928 ALKALINITY, BICARBONATE 320.000 MG/L 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1919 CALCIUM 96.000 MG/L 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1929 ALKALINITY, CARBONATE < MG/L 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1017 CHLORIDE 47.000 MG/L 500 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1905 COLOR < UNITS 15 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1022 COPPER, FREE < 50.000 UG/L 1000 50 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 2905 FOAMING AGENTS (SURFACTANTS) < MG/L .5 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1915 HARDNESS, TOTAL (AS CACO3) 330.000 MG/L 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1021 HYDROXIDE AS CALCIUM CARBONATE < MG/L 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1028 IRON < 100.000 UG/L 300 100 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1031 MAGNESIUM 23.000 MG/L 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1032 MANGANESE < 20.000 UG/L 50 20 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1920 ODOR < 1.000 TON 3 1 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 GENERAL NON CHAP 15-202405 C253 PH, FIELD 6.690 pH 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1050 SILVER < 10.000 UG/L 100 10 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1052 SODIUM 31.000 MG/L 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202408 1064 CONDUCTIVITY @ 25 C UMHOS/CM 650.000 UMHO/CM 1600 08-04-2021 36 2024/08
CA4310001_018_018 SECONDARY/GP-202405 1055 SULFATE 37.000 0.500 MG/L 500 .5 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1930 TDS 430.000 MG/L 1000 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 0100 TURBIDITY 1.300 0.100 NTU 5 .1 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 SECONDARY/GP-202405 1095 ZINC < 50.000 UG/L 5000 50 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 INORGANIC-202405 1002 ALUMINUM < 50.000 UG/L 1000 50 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 INORGANIC-202405 1074 ANTIMONY, TOTAL < 6.000 UG/L 6 6 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 INORGANIC-202405 1005 ARSENIC < 2.000 UG/L 10 2 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 INORGANIC-202401 1094 ASBESTOS < 0.200 MFL 7 .2 01-14-2015 108 2024/01 DUE NOW
CA4310001_018_018 INORGANIC-202405 1010 BARIUM 120.000 100.000 UG/L 1000 100 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 INORGANIC-202405 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 INORGANIC-202405 1015 CADMIUM < 1.000 UG/L 5 1 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 INORGANIC-202405 1020 CHROMIUM < 10.000 UG/L 50 10 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 INORGANIC-202405 1024 CYANIDE < 100.000 UG/L 150 100 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 INORGANIC-202405 1025 FLUORIDE 0.150 0.100 MG/L 2 .1 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 INORGANIC-202405 1035 MERCURY < 1.000 UG/L 2 1 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 INORGANIC-202405 1036 NICKEL < 10.000 UG/L 100 10 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 INORGANIC-202408 1039 PERCHLORATE < 2.000 UG/L 6 2 08-04-2021 36 2024/08
CA4310001_018_018 INORGANIC-202405 1045 SELENIUM < 5.000 UG/L 50 5 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 INORGANIC-202405 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 NITRATE/NITRITE-202502 1040 NITRATE 3.900 0.400 MG/L 10 .4 02-07-2024 12 2025/02
CA4310001_018_018 NITRATE/NITRITE-202405 1041 NITRITE < 0.400 MG/L 1 .4 05-18-2021 36 2024/05 DUE NOW
CA4310001_018_018 RADIOLOGICAL-202708 4109 GROSS ALPHA PARTICLE ACTIVITY < 0.200 PCI/L 15 3 08-08-2018 108 2027/08
CA4310001_018_018 REGULATED VOC-202702 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2990 BENZENE < 0.500 UG/L 1 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2251 METHYL TERT-BUTYL ETHER < 0.500 UG/L 13 3 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2996 STYRENE < 0.500 UG/L 100 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2991 TOLUENE < 0.500 UG/L 150 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2218 TRICHLOROFLUOROMETHANE < 0.500 UG/L 150 5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2904 TRICHLOROTRIFLUOROETHANE < 0.500 UG/L 1200 10 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED VOC-202702 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 02-21-2024 36 2027/02
CA4310001_018_018 REGULATED SOC-202608 2414 1,2,3-TRICHLOROPROPANE < 0.002 UG/L 0.005 11-13-2023 33 2026/08
CA4310001_018_018 REGULATED SOC-202605 2063 2,3,7,8-TCDD < 0.005 NG/L 0.03 0.005 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2110 2,4,5-TP < 1.000 UG/L 50 1 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2105 2,4-D < 10.000 UG/L 70 10 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2051 LASSO (ALACHLOR) < 0.050 UG/L 2 1 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2050 ATRAZINE < 0.050 UG/L 1 .5 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2625 BENTAZON < 2.000 UG/L 18 2 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2306 BENZO(A)PYRENE < 0.010 UG/L .2 .1 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2046 CARBOFURAN < 5.000 UG/L 18 5 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2959 CHLORDANE < 0.100 UG/L .1 .1 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2031 DALAPON < 10.000 UG/L 200 10 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2035 DI(2-ETHYLHEXYL) ADIPATE < 1.000 UG/L 400 5 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2039 DI(2-ETHYLHEXYL) PHTHALATE < 0.250 UG/L 4 3 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202601 2931 1,2-DIBROMO-3-CHLOROPROPANE < 0.010 UG/L .2 .01 04-10-2023 33 2026/01
CA4310001_018_018 REGULATED SOC-202605 2041 DINOSEB < 2.000 UG/L 7 2 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2032 DIQUAT < 4.000 UG/L 20 4 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2033 ENDOTHALL < 45.000 UG/L 100 45 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2005 ENDRIN < 0.050 UG/L 2 .1 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202601 2946 ETHYLENE DIBROMIDE < 0.020 UG/L .05 .02 04-10-2023 33 2026/01
CA4310001_018_018 REGULATED SOC-202605 2034 GLYPHOSATE < 25.000 UG/L 700 25 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2065 HEPTACHLOR < 0.010 UG/L .01 .01 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2067 HEPTACHLOR EPOXIDE < 0.010 UG/L .01 .01 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2274 HEXACHLOROBENZENE < 0.010 UG/L 1 .5 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2042 HEXACHLOROCYCLOPENTADIENE < 0.250 UG/L 50 1 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2010 BHC-GAMMA < 0.010 UG/L .2 .2 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2015 METHOXYCHLOR < 0.050 UG/L 30 10 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2626 MOLINATE < 0.050 UG/L 20 2 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2036 OXAMYL < 20.000 UG/L 50 20 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2326 PENTACHLOROPHENOL < 0.050 UG/L 1 .2 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2040 PICLORAM < 1.000 UG/L 500 1 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2383 TOTAL POLYCHLORINATED BIPHENYLS (PCB) < 0.010 UG/L .5 .5 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2037 SIMAZINE < 0.050 UG/L 4 1 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2727 THIOBENCARB (BOLERO) < 0.050 UG/L 70 1 08-21-2023 33 2026/05
CA4310001_018_018 REGULATED SOC-202605 2020 TOXAPHENE < 1.000 UG/L 3 1 08-21-2023 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.