Date:05-14-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:0707625SYSTEM NAME:MARATHON MARTINEZ WATER SYSTEMCOUNTY:CONTRA COSTA 
SOURCE NO.:002SOURCE NAME:WELL 11SOURCE CLASS:NTGSSTATUS: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
CA0707625_002_002 INORGANIC-202503 1002 ALUMINUM < 50.000 UG/L 1000 50 03-30-2022 36 2025/03
CA0707625_002_002 INORGANIC-202503 1074 ANTIMONY, TOTAL < 6.000 UG/L 6 6 03-30-2022 36 2025/03
CA0707625_002_002 INORGANIC-202503 1005 ARSENIC < 2.000 UG/L 10 2 03-30-2022 36 2025/03
CA0707625_002_002 INORGANIC-202503 1010 BARIUM 110.000 100.000 UG/L 1000 100 03-30-2022 36 2025/03
CA0707625_002_002 INORGANIC-202503 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 03-30-2022 36 2025/03
CA0707625_002_002 INORGANIC-202503 1015 CADMIUM < 1.000 UG/L 5 1 03-30-2022 36 2025/03
CA0707625_002_002 INORGANIC-202503 1020 CHROMIUM < 10.000 UG/L 50 10 03-30-2022 36 2025/03
CA0707625_002_002 INORGANIC-202503 1025 FLUORIDE 0.250 0.200 MG/L 2 .1 03-30-2022 36 2025/03
CA0707625_002_002 INORGANIC-202503 1030 LEAD < 0.500 UG/L 5 03-30-2022 36 2025/03
CA0707625_002_002 INORGANIC-202503 1035 MERCURY < 1.000 UG/L 2 1 03-30-2022 36 2025/03
CA0707625_002_002 INORGANIC-202503 1036 NICKEL < 10.000 UG/L 100 10 03-30-2022 36 2025/03
CA0707625_002_002 INORGANIC-202503 1039 PERCHLORATE 0.990 0.500 UG/L 6 2 03-30-2022 36 2025/03
CA0707625_002_002 INORGANIC-202503 1045 SELENIUM 9.800 5.000 UG/L 50 5 03-30-2022 36 2025/03
CA0707625_002_002 INORGANIC-202503 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 03-30-2022 36 2025/03
CA0707625_002_002 NITRATE/NITRITE-202303 1040 NITRATE 3.500 0.200 MG/L 10 .4 03-30-2022 12 2023/03 DUE NOW
CA0707625_002_002 NITRATE/NITRITE-202503 1041 NITRITE < 0.200 MG/L 1 .4 03-30-2022 36 2025/03
CA0707625_002_002 RADIOLOGICAL-202803 4109 GROSS ALPHA PARTICLE ACTIVITY 3.500 +/- 1.340 1.560 PCI/L 15 3 03-30-2022 72 2028/03
CA0707625_002_002 REGULATED VOC-202503 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-null 2413 1,3-DICHLOROPROPENE UG/L .5 .5 36 DUE NOW
CA0707625_002_002 REGULATED VOC-202503 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2990 BENZENE < 0.500 UG/L 1 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2251 METHYL TERT-BUTYL ETHER < 0.500 UG/L 13 3 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2996 STYRENE < 0.500 UG/L 100 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2991 TOLUENE < 0.500 UG/L 150 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2218 TRICHLOROFLUOROMETHANE < 0.500 UG/L 150 5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202206 2904 TRICHLOROTRIFLUOROETHANE < 10.000 UG/L 1200 10 06-18-2019 36 2022/06 DUE NOW
CA0707625_002_002 REGULATED VOC-202503 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED VOC-202503 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 03-30-2022 36 2025/03
CA0707625_002_002 REGULATED SOC-202503 2414 1,2,3-TRICHLOROPROPANE < 0.005 UG/L 0.005 03-30-2022 36 2025/03
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.