Date:05-19-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:4310001SYSTEM NAME:CWSC LOS ALTOS SUBURBANCOUNTY:SANTA CLARA 
SOURCE NO.:028SOURCE NAME:WELL 115-01SOURCE 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_028_028 SECONDARY/GP-202503 1928 ALKALINITY, BICARBONATE 300.000 3.000 MG/L 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1919 CALCIUM 81.000 0.100 MG/L 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1929 ALKALINITY, CARBONATE < 3.000 MG/L 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1017 CHLORIDE 39.000 1.000 MG/L 500 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1905 COLOR < 5.000 UNITS 15 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1022 COPPER, FREE < 5.000 UG/L 1000 50 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 2905 FOAMING AGENTS (SURFACTANTS) < 0.050 MG/L .5 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1915 HARDNESS, TOTAL (AS CACO3) 320.000 0.410 MG/L 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1021 HYDROXIDE AS CALCIUM CARBONATE < 3.000 MG/L 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1028 IRON < 30.000 UG/L 300 100 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1031 MAGNESIUM 28.000 0.100 MG/L 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1032 MANGANESE < 10.000 UG/L 50 20 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1920 ODOR < 1.000 TON 3 1 03-10-2022 36 2025/03
CA4310001_028_028 GENERAL NON CHAP 15-202503 C253 PH, FIELD 7.340 pH 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1050 SILVER < 10.000 UG/L 100 10 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1052 SODIUM 32.000 1.000 MG/L 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1064 CONDUCTIVITY @ 25 C UMHOS/CM 750.000 1.000 UMHO/CM 1600 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1055 SULFATE 30.000 1.000 MG/L 500 .5 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1930 TDS 410.000 5.000 MG/L 1000 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 0100 TURBIDITY 0.260 0.100 NTU 5 .1 03-10-2022 36 2025/03
CA4310001_028_028 SECONDARY/GP-202503 1095 ZINC < 50.000 UG/L 5000 50 03-10-2022 36 2025/03
CA4310001_028_028 INORGANIC-202503 1002 ALUMINUM < 50.000 UG/L 1000 50 03-10-2022 36 2025/03
CA4310001_028_028 INORGANIC-202503 1074 ANTIMONY, TOTAL < 2.000 UG/L 6 6 03-10-2022 36 2025/03
CA4310001_028_028 INORGANIC-202503 1005 ARSENIC < 2.000 UG/L 10 2 03-10-2022 36 2025/03
CA4310001_028_028 INORGANIC-202401 1094 ASBESTOS < 0.200 MFL 7 .2 01-14-2015 108 2024/01 DUE NOW
CA4310001_028_028 INORGANIC-202503 1010 BARIUM < 50.000 UG/L 1000 100 03-10-2022 36 2025/03
CA4310001_028_028 INORGANIC-202503 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 03-10-2022 36 2025/03
CA4310001_028_028 INORGANIC-202503 1015 CADMIUM < 1.000 UG/L 5 1 03-10-2022 36 2025/03
CA4310001_028_028 INORGANIC-202503 1020 CHROMIUM < 10.000 UG/L 50 10 03-10-2022 36 2025/03
CA4310001_028_028 INORGANIC-202503 1024 CYANIDE < 5.000 UG/L 150 100 03-10-2022 36 2025/03
CA4310001_028_028 INORGANIC-202503 1025 FLUORIDE < 0.100 MG/L 2 .1 03-10-2022 36 2025/03
CA4310001_028_028 INORGANIC-202503 1035 MERCURY < 0.200 UG/L 2 1 03-10-2022 36 2025/03
CA4310001_028_028 INORGANIC-202503 1036 NICKEL < 10.000 UG/L 100 10 03-10-2022 36 2025/03
CA4310001_028_028 INORGANIC-202503 1039 PERCHLORATE < 2.000 UG/L 6 2 03-10-2022 36 2025/03
CA4310001_028_028 INORGANIC-202503 1045 SELENIUM < 2.000 UG/L 50 5 03-10-2022 36 2025/03
CA4310001_028_028 INORGANIC-202503 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 03-10-2022 36 2025/03
CA4310001_028_028 NITRATE/NITRITE-202503 1040 NITRATE 2.200 0.400 MG/L 10 .4 03-20-2024 12 2025/03
CA4310001_028_028 NITRATE/NITRITE-202503 1041 NITRITE < 0.050 MG/L 1 .4 03-10-2022 36 2025/03
CA4310001_028_028 RADIOLOGICAL-203103 4109 GROSS ALPHA PARTICLE ACTIVITY < 3.000 PCI/L 15 3 03-10-2022 108 2031/03
CA4310001_028_028 REGULATED VOC-202703 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2990 BENZENE < 0.500 UG/L 1 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2251 METHYL TERT-BUTYL ETHER < 0.500 UG/L 13 3 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2996 STYRENE < 0.500 UG/L 100 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2991 TOLUENE < 0.500 UG/L 150 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2218 TRICHLOROFLUOROMETHANE < 0.500 UG/L 150 5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2904 TRICHLOROTRIFLUOROETHANE < 0.500 UG/L 1200 10 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED VOC-202703 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 03-06-2024 36 2027/03
CA4310001_028_028 REGULATED SOC-202603 2414 1,2,3-TRICHLOROPROPANE < 0.001 UG/L 0.005 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2063 2,3,7,8-TCDD < 0.005 NG/L 0.03 0.005 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2110 2,4,5-TP < 1.000 UG/L 50 1 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2105 2,4-D < 10.000 UG/L 70 10 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2051 LASSO (ALACHLOR) < 1.000 UG/L 2 1 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2050 ATRAZINE < 0.500 UG/L 1 .5 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2625 BENTAZON < 2.000 UG/L 18 2 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2306 BENZO(A)PYRENE < 0.100 UG/L .2 .1 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2046 CARBOFURAN < 5.000 UG/L 18 5 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2959 CHLORDANE < 0.100 UG/L .1 .1 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2031 DALAPON < 10.000 UG/L 200 10 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2035 DI(2-ETHYLHEXYL) ADIPATE < 5.000 UG/L 400 5 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2039 DI(2-ETHYLHEXYL) PHTHALATE < 3.000 UG/L 4 3 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202602 2931 1,2-DIBROMO-3-CHLOROPROPANE < 0.010 UG/L .2 .01 05-17-2023 33 2026/02
CA4310001_028_028 REGULATED SOC-202603 2041 DINOSEB < 2.000 UG/L 7 2 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2032 DIQUAT < 4.000 UG/L 20 4 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2033 ENDOTHALL < 45.000 UG/L 100 45 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2005 ENDRIN < 0.100 UG/L 2 .1 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202602 2946 ETHYLENE DIBROMIDE < 0.020 UG/L .05 .02 05-17-2023 33 2026/02
CA4310001_028_028 REGULATED SOC-202603 2034 GLYPHOSATE < 25.000 UG/L 700 25 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2065 HEPTACHLOR < 0.010 UG/L .01 .01 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2067 HEPTACHLOR EPOXIDE < 0.010 UG/L .01 .01 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2274 HEXACHLOROBENZENE < 0.500 UG/L 1 .5 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2042 HEXACHLOROCYCLOPENTADIENE < 1.000 UG/L 50 1 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2010 BHC-GAMMA < 0.200 UG/L .2 .2 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2015 METHOXYCHLOR < 10.000 UG/L 30 10 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2626 MOLINATE < 2.000 UG/L 20 2 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2036 OXAMYL < 20.000 UG/L 50 20 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2326 PENTACHLOROPHENOL < 0.200 UG/L 1 .2 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2040 PICLORAM < 1.000 UG/L 500 1 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2383 TOTAL POLYCHLORINATED BIPHENYLS (PCB) < 0.500 UG/L .5 .5 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2037 SIMAZINE < 1.000 UG/L 4 1 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2727 THIOBENCARB (BOLERO) < 1.000 UG/L 70 1 06-20-2023 33 2026/03
CA4310001_028_028 REGULATED SOC-202603 2020 TOXAPHENE < 1.000 UG/L 3 1 06-20-2023 33 2026/03
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.