Date:05-14-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:3910005SYSTEM NAME:MANTECA, CITY OFCOUNTY:SAN JOAQUIN 
SOURCE NO.:030SOURCE NAME:WELL NO. 18 - STANDBYSOURCE CLASS:STBYSTATUS: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
CA3910005_030_030 SECONDARY/GP-202712 1928 ALKALINITY, BICARBONATE 230.000 MG/L 12-11-2018 108 2027/12
CA3910005_030_030 SECONDARY/GP-202712 1919 CALCIUM 48.000 MG/L 12-11-2018 108 2027/12
CA3910005_030_030 SECONDARY/GP-202712 1929 ALKALINITY, CARBONATE < MG/L 12-11-2018 108 2027/12
CA3910005_030_030 SECONDARY/GP-202409 1017 CHLORIDE 9.500 MG/L 500 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202409 1905 COLOR < UNITS 15 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202409 1022 COPPER, FREE < 50.000 UG/L 1000 50 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202409 2905 FOAMING AGENTS (SURFACTANTS) < MG/L .5 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202409 1915 HARDNESS, TOTAL (AS CACO3) 240.000 MG/L 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202712 1021 HYDROXIDE AS CALCIUM CARBONATE < MG/L 12-11-2018 108 2027/12
CA3910005_030_030 SECONDARY/GP-202409 1028 IRON < 100.000 UG/L 300 100 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202409 1031 MAGNESIUM 20.000 MG/L 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202409 1032 MANGANESE < 20.000 UG/L 50 20 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202409 1920 ODOR < 1.000 TON 3 1 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202712 1925 PH 8.000 pH 12-11-2018 108 2027/12
CA3910005_030_030 SECONDARY/GP-202409 1050 SILVER < 10.000 UG/L 100 10 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202409 1052 SODIUM 37.000 MG/L 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202409 1064 CONDUCTIVITY @ 25 C UMHOS/CM 640.000 UMHO/CM 1600 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202409 1055 SULFATE 28.000 0.500 MG/L 500 .5 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202409 1930 TDS 420.000 MG/L 1000 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202409 0100 TURBIDITY < 0.100 NTU 5 .1 09-08-2015 108 2024/09
CA3910005_030_030 SECONDARY/GP-202409 1095 ZINC < 50.000 UG/L 5000 50 09-08-2015 108 2024/09
CA3910005_030_030 INORGANIC-202409 1002 ALUMINUM < 50.000 UG/L 1000 50 09-08-2015 108 2024/09
CA3910005_030_030 INORGANIC-202409 1074 ANTIMONY, TOTAL < 6.000 UG/L 6 6 09-08-2015 108 2024/09
CA3910005_030_030 INORGANIC-202409 1005 ARSENIC 3.700 2.000 UG/L 10 2 09-08-2015 108 2024/09
CA3910005_030_030 INORGANIC-202409 1010 BARIUM 210.000 100.000 UG/L 1000 100 09-08-2015 108 2024/09
CA3910005_030_030 INORGANIC-202409 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 09-08-2015 108 2024/09
CA3910005_030_030 INORGANIC-202409 1015 CADMIUM < 1.000 UG/L 5 1 09-08-2015 108 2024/09
CA3910005_030_030 INORGANIC-202409 1020 CHROMIUM < 10.000 UG/L 50 10 09-08-2015 108 2024/09
CA3910005_030_030 INORGANIC-202409 1025 FLUORIDE < 0.100 MG/L 2 .1 09-08-2015 108 2024/09
CA3910005_030_030 INORGANIC-202409 1035 MERCURY < 1.000 UG/L 2 1 09-08-2015 108 2024/09
CA3910005_030_030 INORGANIC-202409 1036 NICKEL < 10.000 UG/L 100 10 09-08-2015 108 2024/09
CA3910005_030_030 INORGANIC-202409 1039 PERCHLORATE < 4.000 UG/L 6 4 09-08-2015 108 2024/09
CA3910005_030_030 INORGANIC-202409 1045 SELENIUM < 5.000 UG/L 50 5 09-08-2015 108 2024/09
CA3910005_030_030 INORGANIC-202409 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 09-08-2015 108 2024/09
CA3910005_030_030 NITRATE/NITRITE-202408 1040 NITRATE 9.200 0.400 MG/L 10 .4 08-07-2023 12 2024/08
CA3910005_030_030 NITRATE/NITRITE-202409 1041 NITRITE < 400.000 UG/L 1000 400 09-08-2015 108 2024/09
CA3910005_030_030 RADIOLOGICAL-202304 4109 GROSS ALPHA PARTICLE ACTIVITY < 1.200 PCI/L 15 3 04-08-2014 108 2023/04 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2990 BENZENE < 0.500 UG/L 1 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202409 2251 METHYL TERT-BUTYL ETHER < 3.000 UG/L 13 3 09-08-2015 108 2024/09
CA3910005_030_030 REGULATED VOC-202302 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2996 STYRENE < 0.500 UG/L 100 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2991 TOLUENE < 0.500 UG/L 150 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2218 TRICHLOROFLUOROMETHANE < 5.000 UG/L 150 5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2904 TRICHLOROTRIFLUOROETHANE < 10.000 UG/L 1200 10 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED VOC-202302 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 02-11-2014 108 2023/02 DUE NOW
CA3910005_030_030 REGULATED SOC-202703 2414 1,2,3-TRICHLOROPROPANE 0.005 UG/L 0.005 03-12-2018 108 2027/03
CA3910005_030_030 REGULATED SOC-202712 2051 LASSO (ALACHLOR) < 1.000 UG/L 2 1 12-11-2018 108 2027/12
CA3910005_030_030 REGULATED SOC-202712 2050 ATRAZINE < 0.500 UG/L 1 .5 12-11-2018 108 2027/12
CA3910005_030_030 REGULATED SOC-202806 2931 1,2-DIBROMO-3-CHLOROPROPANE < UG/L .2 .01 06-11-2019 108 2028/06
CA3910005_030_030 REGULATED SOC-202806 2946 ETHYLENE DIBROMIDE < UG/L .05 .02 06-11-2019 108 2028/06
CA3910005_030_030 REGULATED SOC-202712 2037 SIMAZINE < 1.000 UG/L 4 1 12-11-2018 108 2027/12
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.