Date:05-18-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:4110009SYSTEM NAME:CALIFORNIA WATER SERVICE-S SAN FRANCISCOCOUNTY:SAN MATEO 
SOURCE NO.:015SOURCE NAME:SSF 001-24SOURCE 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
CA4110009_015_015 SECONDARY/GP-202505 1928 ALKALINITY, BICARBONATE 310.000 3.000 MG/L 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202505 1919 CALCIUM 69.000 0.100 MG/L 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202505 1929 ALKALINITY, CARBONATE < 3.000 MG/L 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202505 1017 CHLORIDE 94.000 1.000 MG/L 500 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202505 1905 COLOR 10.000 5.000 UNITS 15 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202704 1022 COPPER, FREE 1.600 1.000 UG/L 1000 50 04-09-2024 36 2027/04
CA4110009_015_015 SECONDARY/GP-202505 2905 FOAMING AGENTS (SURFACTANTS) < 0.050 MG/L .5 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202505 1915 HARDNESS, TOTAL (AS CACO3) 380.000 0.410 MG/L 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202505 1021 HYDROXIDE AS CALCIUM CARBONATE < 3.000 MG/L 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202407 1028 IRON 390.000 30.000 UG/L 300 100 04-09-2024 3 2024/07
CA4110009_015_015 SECONDARY/GP-202505 1031 MAGNESIUM 50.000 0.100 MG/L 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202407 1032 MANGANESE 430.000 10.000 UG/L 50 20 04-09-2024 3 2024/07
CA4110009_015_015 SECONDARY/GP-202505 1920 ODOR < 1.000 TON 3 1 05-23-2022 36 2025/05
CA4110009_015_015 GENERAL NON CHAP 15-202505 C253 PH, FIELD 7.400 pH 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202505 1050 SILVER < 10.000 UG/L 100 10 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202505 1052 SODIUM 82.000 1.000 MG/L 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202505 1064 CONDUCTIVITY @ 25 C UMHOS/CM 1000.000 1.000 UMHO/CM 1600 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202505 1055 SULFATE 96.000 1.000 MG/L 500 .5 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202505 1930 TDS 590.000 5.000 MG/L 1000 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202505 0100 TURBIDITY 4.000 0.100 NTU 5 .1 05-23-2022 36 2025/05
CA4110009_015_015 SECONDARY/GP-202704 1095 ZINC 1.900 1.000 UG/L 5000 50 04-09-2024 36 2027/04
CA4110009_015_015 INORGANIC-202704 1002 ALUMINUM < 50.000 UG/L 1000 50 04-09-2024 36 2027/04
CA4110009_015_015 INORGANIC-202704 1074 ANTIMONY, TOTAL < 1.000 UG/L 6 6 04-09-2024 36 2027/04
CA4110009_015_015 INORGANIC-202407 1005 ARSENIC 3.900 1.000 UG/L 10 2 04-09-2024 3 2024/07
CA4110009_015_015 INORGANIC-203009 1094 ASBESTOS < 0.200 MFL 7 .2 09-21-2021 108 2030/09
CA4110009_015_015 INORGANIC-202505 1010 BARIUM 160.000 50.000 UG/L 1000 100 05-23-2022 36 2025/05
CA4110009_015_015 INORGANIC-202704 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 04-09-2024 36 2027/04
CA4110009_015_015 INORGANIC-202704 1015 CADMIUM < 1.000 UG/L 5 1 04-09-2024 36 2027/04
CA4110009_015_015 INORGANIC-202704 1020 CHROMIUM 3.500 1.000 UG/L 50 10 04-09-2024 36 2027/04
CA4110009_015_015 INORGANIC-202505 1024 CYANIDE < 5.000 UG/L 150 100 05-23-2022 36 2025/05
CA4110009_015_015 INORGANIC-202505 1025 FLUORIDE < 0.100 MG/L 2 .1 05-23-2022 36 2025/05
CA4110009_015_015 INORGANIC-202505 1035 MERCURY < 0.200 UG/L 2 1 05-23-2022 36 2025/05
CA4110009_015_015 INORGANIC-202704 1036 NICKEL 1.700 1.000 UG/L 100 10 04-09-2024 36 2027/04
CA4110009_015_015 INORGANIC-202409 1039 PERCHLORATE < 2.000 UG/L 6 2 09-21-2021 36 2024/09
CA4110009_015_015 INORGANIC-202704 1045 SELENIUM 1.400 1.000 UG/L 50 5 04-09-2024 36 2027/04
CA4110009_015_015 INORGANIC-202704 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 04-09-2024 36 2027/04
CA4110009_015_015 NITRATE/NITRITE-202407 1040 NITRATE < 0.400 MG/L 10 .4 04-11-2024 3 2024/07
CA4110009_015_015 NITRATE/NITRITE-202505 1041 NITRITE < 0.050 MG/L 1 .4 05-23-2022 36 2025/05
CA4110009_015_015 RADIOLOGICAL-203301 4109 GROSS ALPHA PARTICLE ACTIVITY < 2.050 PCI/L 15 3 01-23-2024 108 2033/01
CA4110009_015_015 REGULATED VOC-202407 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2990 BENZENE < 0.500 UG/L 1 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2251 METHYL TERT-BUTYL ETHER < 0.500 UG/L 13 3 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2996 STYRENE < 0.500 UG/L 100 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2991 TOLUENE < 0.500 UG/L 150 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2218 TRICHLOROFLUOROMETHANE < 5.000 UG/L 150 5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2904 TRICHLOROTRIFLUOROETHANE < 10.000 UG/L 1200 10 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED VOC-202407 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 04-16-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202701 2414 1,2,3-TRICHLOROPROPANE 0.011 0.002 UG/L 0.005 04-18-2024 33 2027/01
CA4110009_015_015 REGULATED SOC-202407 2063 2,3,7,8-TCDD < 0.005 NG/L 0.03 0.005 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2110 2,4,5-TP < 1.000 UG/L 50 1 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2105 2,4-D < 10.000 UG/L 70 10 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2051 LASSO (ALACHLOR) < 1.000 UG/L 2 1 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2050 ATRAZINE < 0.500 UG/L 1 .5 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2625 BENTAZON < 2.000 UG/L 18 2 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2306 BENZO(A)PYRENE < 0.100 UG/L .2 .1 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2046 CARBOFURAN < 5.000 UG/L 18 5 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2959 CHLORDANE < 0.100 UG/L .1 .1 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2031 DALAPON < 10.000 UG/L 200 10 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2035 DI(2-ETHYLHEXYL) ADIPATE < 5.000 UG/L 400 5 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2039 DI(2-ETHYLHEXYL) PHTHALATE < 3.000 UG/L 4 3 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2931 1,2-DIBROMO-3-CHLOROPROPANE < 0.010 UG/L .2 .01 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2041 DINOSEB < 2.000 UG/L 7 2 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2032 DIQUAT < 4.000 UG/L 20 4 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2033 ENDOTHALL < 45.000 UG/L 100 45 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2005 ENDRIN < 0.100 UG/L 2 .1 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2946 ETHYLENE DIBROMIDE < 0.020 UG/L .05 .02 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2034 GLYPHOSATE < 25.000 UG/L 700 25 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2065 HEPTACHLOR < 0.010 UG/L .01 .01 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2067 HEPTACHLOR EPOXIDE < 0.010 UG/L .01 .01 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2274 HEXACHLOROBENZENE < 0.500 UG/L 1 .5 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2042 HEXACHLOROCYCLOPENTADIENE < 1.000 UG/L 50 1 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2010 BHC-GAMMA < 0.200 UG/L .2 .2 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2015 METHOXYCHLOR < 10.000 UG/L 30 10 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2626 MOLINATE < 2.000 UG/L 20 2 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2036 OXAMYL < 20.000 UG/L 50 20 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2326 PENTACHLOROPHENOL < 0.200 UG/L 1 .2 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2040 PICLORAM < 1.000 UG/L 500 1 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2383 TOTAL POLYCHLORINATED BIPHENYLS (PCB) < 0.500 UG/L .5 .5 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2037 SIMAZINE < 1.000 UG/L 4 1 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2727 THIOBENCARB (BOLERO) < 1.000 UG/L 70 1 04-09-2024 3 2024/07
CA4110009_015_015 REGULATED SOC-202407 2020 TOXAPHENE < 1.000 UG/L 3 1 04-09-2024 3 2024/07
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.