Date:05-18-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:4100551SYSTEM NAME:MARCHI CENTRAL FARMCOUNTY:SAN MATEO 
SOURCE NO.:All SourcesSOURCE NAME:N/ASOURCE CLASS:N/ASTATUS:N/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
CA4100551_008_008 SECONDARY/GP-202506 1928 ALKALINITY, BICARBONATE 64.000 5.000 MG/L 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202506 1919 CALCIUM 46.000 0.200 MG/L 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202506 1929 ALKALINITY, CARBONATE < 5.000 MG/L 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202506 1017 CHLORIDE 110.000 10.000 MG/L 500 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202411 1905 COLOR < 2.000 UNITS 15 11-03-2021 36 2024/11
CA4100551_008_008 SECONDARY/GP-202506 1022 COPPER, FREE < 10.000 UG/L 1000 50 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202506 2905 FOAMING AGENTS (SURFACTANTS) 0.035 0.025 MG/L .5 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202411 1915 HARDNESS, TOTAL (AS CACO3) 66.000 1.323 MG/L 11-03-2021 36 2024/11
CA4100551_008_008 SECONDARY/GP-202506 1021 HYDROXIDE AS CALCIUM CARBONATE < 5.000 MG/L 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202506 1028 IRON < 100.000 UG/L 300 100 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202506 1031 MAGNESIUM 17.000 0.200 MG/L 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202405 1032 MANGANESE 71.000 15.000 UG/L 50 20 02-13-2024 3 2024/05 DUE NOW
CA4100551_008_008 SECONDARY/GP-202411 1920 ODOR < 1.000 TON 3 1 11-03-2021 36 2024/11
CA4100551_008_008 SECONDARY/GP-202506 1925 PH 8.160 pH 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202506 1050 SILVER < 10.000 UG/L 100 10 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202506 1052 SODIUM 69.000 0.200 MG/L 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202506 1064 CONDUCTIVITY @ 25 C UMHOS/CM 715.000 10.000 UMHO/CM 1600 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202506 1055 SULFATE 76.000 10.000 MG/L 500 .5 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202506 1930 TDS 396.000 10.000 MG/L 1000 06-28-2022 36 2025/06
CA4100551_008_008 SECONDARY/GP-202502 0100 TURBIDITY 0.150 0.100 NTU 5 .1 02-23-2022 36 2025/02
CA4100551_008_008 SECONDARY/GP-202506 1095 ZINC < 50.000 UG/L 5000 50 06-28-2022 36 2025/06
CA4100551_008_008 INORGANIC-202506 1002 ALUMINUM < 50.000 UG/L 1000 50 06-28-2022 36 2025/06
CA4100551_008_008 INORGANIC-202405 1074 ANTIMONY, TOTAL 13.600 0.500 UG/L 6 6 02-13-2024 3 2024/05 DUE NOW
CA4100551_008_008 INORGANIC-202506 1005 ARSENIC 9.200 2.000 UG/L 10 2 06-28-2022 36 2025/06
CA4100551_008_008 INORGANIC-203102 1094 ASBESTOS < 0.200 MFL 7 .2 02-23-2022 108 2031/02
CA4100551_008_008 INORGANIC-202506 1010 BARIUM < 100.000 UG/L 1000 100 06-28-2022 36 2025/06
CA4100551_008_008 INORGANIC-202506 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 06-28-2022 36 2025/06
CA4100551_008_008 INORGANIC-202506 1015 CADMIUM < 1.000 UG/L 5 1 06-28-2022 36 2025/06
CA4100551_008_008 INORGANIC-202506 1020 CHROMIUM < 10.000 UG/L 50 10 06-28-2022 36 2025/06
CA4100551_008_008 INORGANIC-202506 1024 CYANIDE < 1.000 UG/L 150 100 06-28-2022 36 2025/06
CA4100551_008_008 INORGANIC-202506 1025 FLUORIDE 0.160 0.100 MG/L 2 .1 06-28-2022 36 2025/06
CA4100551_008_008 INORGANIC-202506 1035 MERCURY < 1.000 UG/L 2 1 06-28-2022 36 2025/06
CA4100551_008_008 INORGANIC-202506 1036 NICKEL < 10.000 UG/L 100 10 06-28-2022 36 2025/06
CA4100551_008_008 INORGANIC-202506 1039 PERCHLORATE < 0.500 UG/L 6 2 06-28-2022 36 2025/06
CA4100551_008_008 INORGANIC-202506 1045 SELENIUM < 5.000 UG/L 50 5 06-28-2022 36 2025/06
CA4100551_008_008 INORGANIC-202506 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 06-28-2022 36 2025/06
CA4100551_008_008 NITRATE/NITRITE-202502 1040 NITRATE 3.600 0.100 MG/L 10 .4 02-13-2024 12 2025/02
CA4100551_008_008 NITRATE/NITRITE-202702 1041 NITRITE < 0.100 MG/L 1 .4 02-13-2024 36 2027/02
CA4100551_008_008 RADIOLOGICAL-203002 4109 GROSS ALPHA PARTICLE ACTIVITY 1.760 +/- 0.732 0.900 PCI/L 15 3 02-17-2021 108 2030/02
CA4100551_008_008 REGULATED VOC-202411 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2990 BENZENE < 0.500 UG/L 1 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2251 METHYL TERT-BUTYL ETHER < 0.500 UG/L 13 3 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2996 STYRENE < 0.500 UG/L 100 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2991 TOLUENE < 0.500 UG/L 150 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2218 TRICHLOROFLUOROMETHANE < 0.500 UG/L 150 5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2904 TRICHLOROTRIFLUOROETHANE < 0.500 UG/L 1200 10 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED VOC-202411 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202511 2414 1,2,3-TRICHLOROPROPANE < 0.005 UG/L 0.005 11-15-2022 36 2025/11
CA4100551_008_008 REGULATED SOC-202411 2110 2,4,5-TP < 1.000 UG/L 50 1 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2105 2,4-D < 1.000 UG/L 70 10 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2051 LASSO (ALACHLOR) < 0.250 UG/L 2 1 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2050 ATRAZINE < 0.250 UG/L 1 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2625 BENTAZON < 1.000 UG/L 18 2 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2306 BENZO(A)PYRENE < 0.040 UG/L .2 .1 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202502 2046 CARBOFURAN < 2.000 UG/L 18 5 02-23-2022 36 2025/02
CA4100551_008_008 REGULATED SOC-202411 2959 CHLORDANE < 0.100 UG/L .1 .1 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2031 DALAPON < 1.000 UG/L 200 10 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2035 DI(2-ETHYLHEXYL) ADIPATE < 0.200 UG/L 400 5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2039 DI(2-ETHYLHEXYL) PHTHALATE < 0.200 UG/L 4 3 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202511 2931 1,2-DIBROMO-3-CHLOROPROPANE < 0.010 UG/L .2 .01 11-15-2022 36 2025/11
CA4100551_008_008 REGULATED SOC-202411 2041 DINOSEB < 1.000 UG/L 7 2 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2032 DIQUAT < 4.000 UG/L 20 4 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2033 ENDOTHALL < 5.000 UG/L 100 45 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2005 ENDRIN < 0.010 UG/L 2 .1 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202511 2946 ETHYLENE DIBROMIDE < 0.020 UG/L .05 .02 11-15-2022 36 2025/11
CA4100551_008_008 REGULATED SOC-202411 2034 GLYPHOSATE < 25.000 UG/L 700 25 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2065 HEPTACHLOR < 0.010 UG/L .01 .01 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2067 HEPTACHLOR EPOXIDE < 0.010 UG/L .01 .01 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2274 HEXACHLOROBENZENE < 0.500 UG/L 1 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2042 HEXACHLOROCYCLOPENTADIENE < 1.000 UG/L 50 1 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2010 BHC-GAMMA < 0.020 UG/L .2 .2 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2015 METHOXYCHLOR < 0.100 UG/L 30 10 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2626 MOLINATE < 0.250 UG/L 20 2 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202502 2036 OXAMYL < 2.000 UG/L 50 20 02-23-2022 36 2025/02
CA4100551_008_008 REGULATED SOC-202411 2326 PENTACHLOROPHENOL < 0.200 UG/L 1 .2 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2040 PICLORAM < 1.000 UG/L 500 1 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2383 TOTAL POLYCHLORINATED BIPHENYLS (PCB) < 0.500 UG/L .5 .5 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2037 SIMAZINE < 0.250 UG/L 4 1 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2727 THIOBENCARB (BOLERO) < 0.250 UG/L 70 1 11-03-2021 36 2024/11
CA4100551_008_008 REGULATED SOC-202411 2020 TOXAPHENE < 0.500 UG/L 3 1 11-03-2021 36 2024/11
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2943 BROMODICHLOROMETHANE 22.000 0.400 UG/L 1 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2942 BROMOFORM 4.800 0.400 UG/L 1 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2941 CHLOROFORM 15.000 0.400 UG/L 1 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2454 DIBROMOACETIC ACID 2.200 0.130 UG/L 1 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2944 DIBROMOCHLOROMETHANE 28.000 0.400 UG/L 1 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2451 DICHLOROACETIC ACID 1.600 0.130 UG/L 1 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2456 TOTAL HALOACETIC ACIDS (HAA5) 9.600 0.130 UG/L 60 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2453 MONOBROMOACETIC ACID 0.130 0.130 UG/L 1 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2450 MONOCHLOROACETIC ACID 0.320 0.270 UG/L 2 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2950 TTHM 70.000 0.400 UG/L 80 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2452 TRICHLOROACETIC ACID 5.400 0.130 UG/L 1 08-01-2023 12 2024/08
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.