Date:07-11-2025STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:4710007SYSTEM NAME:MONTAGUE, CITY OFCOUNTY:SISKIYOU 
SOURCE NO.:001SOURCE NAME:LAKE SHASTINA - RAWSOURCE CLASS:CLSPSTATUS: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
CA4710007_001_001 SECONDARY/GP 1928 ALKALINITY, BICARBONATE 111.000 5.000 MG/L 05-01-2025 108 2034/05
CA4710007_001_001 SECONDARY/GP 1919 CALCIUM 12.000 MG/L 07-06-2016 108 2025/07 DUE NOW
CA4710007_001_001 SECONDARY/GP 1929 ALKALINITY, CARBONATE 58.000 5.000 MG/L 05-01-2025 108 2034/05
CA4710007_001_001 SECONDARY/GP 1017 CHLORIDE 8.200 MG/L 500 06-12-2013 108 2022/06 DUE NOW
CA4710007_001_001 SECONDARY/GP 1022 COPPER, FREE < 50.000 UG/L 1000 50 06-12-2013 108 2022/06 DUE NOW
CA4710007_001_001 SECONDARY/GP 2905 FOAMING AGENTS (SURFACTANTS) < MG/L .5 06-12-2013 108 2022/06 DUE NOW
CA4710007_001_001 SECONDARY/GP 1915 HARDNESS, TOTAL (AS CACO3) 140.000 MG/L 06-12-2013 108 2022/06 DUE NOW
CA4710007_001_001 SECONDARY/GP 1021 HYDROXIDE AS CALCIUM CARBONATE < 5.000 MG/L 05-01-2025 108 2034/05
CA4710007_001_001 SECONDARY/GP 1028 IRON 169.000 100.000 UG/L 300 07-06-2016 108 2025/07 DUE NOW
CA4710007_001_001 SECONDARY/GP 1031 MAGNESIUM 23.100 MG/L 06-12-2013 108 2022/06 DUE NOW
CA4710007_001_001 SECONDARY/GP 1032 MANGANESE < 20.000 UG/L 50 07-06-2016 108 2025/07 DUE NOW
CA4710007_001_001 SECONDARY/GP 1050 SILVER < 10.000 UG/L 100 10 06-01-2011 108 2020/06 DUE NOW
CA4710007_001_001 SECONDARY/GP 1052 SODIUM 18.500 MG/L 06-12-2013 108 2022/06 DUE NOW
CA4710007_001_001 SECONDARY/GP 1064 CONDUCTIVITY @ 25 C UMHOS/CM 299.000 UMHO/CM 1600 06-12-2013 108 2022/06 DUE NOW
CA4710007_001_001 SECONDARY/GP 1055 SULFATE 4.400 0.500 MG/L 500 06-12-2013 108 2022/06 DUE NOW
CA4710007_001_001 SECONDARY/GP 1930 TDS 186.000 MG/L 1000 06-12-2013 108 2022/06 DUE NOW
CA4710007_001_001 SECONDARY/GP 1095 ZINC < 50.000 UG/L 5000 50 06-12-2013 108 2022/06 DUE NOW
CA4710007_001_001 INORGANIC 1002 ALUMINUM 190.000 50.000 UG/L 1000 50 07-06-2016 108 2025/07 DUE NOW
CA4710007_001_001 INORGANIC 1074 ANTIMONY, TOTAL < 6.000 UG/L 6 6 07-06-2016 108 2025/07 DUE NOW
CA4710007_001_001 INORGANIC 1005 ARSENIC < 2.000 UG/L 10 2 06-01-2011 108 2020/06 DUE NOW
CA4710007_001_001 INORGANIC 1094 ASBESTOS < 0.200 MFL 7 .2 08-01-2019 108 2028/08
CA4710007_001_001 INORGANIC 1010 BARIUM < 100.000 UG/L 1000 100 06-01-2011 108 2020/06 DUE NOW
CA4710007_001_001 INORGANIC 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 08-01-2019 108 2028/08
CA4710007_001_001 INORGANIC 1015 CADMIUM < 1.000 UG/L 5 1 06-01-2011 108 2020/06 DUE NOW
CA4710007_001_001 INORGANIC 1020 CHROMIUM < 10.000 UG/L 50 10 06-01-2011 108 2020/06 DUE NOW
CA4710007_001_001 INORGANIC 1025 FLUORIDE 0.100 0.100 MG/L 2 .1 06-01-2011 108 2020/06 DUE NOW
CA4710007_001_001 INORGANIC 1035 MERCURY < 1.000 UG/L 2 1 06-01-2011 108 2020/06 DUE NOW
CA4710007_001_001 INORGANIC 1036 NICKEL < 10.000 UG/L 100 10 07-06-2016 108 2025/07 DUE NOW
CA4710007_001_001 INORGANIC 1039 PERCHLORATE < 4.000 UG/L 6 4 07-13-2016 12 2017/07 DUE NOW
CA4710007_001_001 INORGANIC 1045 SELENIUM < 5.000 UG/L 50 5 06-01-2011 108 2020/06 DUE NOW
CA4710007_001_001 INORGANIC 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 08-01-2019 108 2028/08
CA4710007_001_001 NITRATE/NITRITE 1040 NITRATE < 0.400 MG/L 10 .4 08-01-2019 12 2020/08 DUE NOW
CA4710007_001_001 NITRATE/NITRITE 1041 NITRITE < 0.400 MG/L 1 .4 11-01-2018 36 2021/11 DUE NOW
CA4710007_001_001 RADIOLOGICAL 4109 GROSS ALPHA PARTICLE ACTIVITY < PCI/L 15 3 12-05-2019 108 2028/12
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.