Date:05-17-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:5610016SYSTEM NAME:CALIFORNIA WATER SERVICE CO - WESTLAKECOUNTY:VENTURA 
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
CA5610016_DST_002 DISINFECTION BYPRODUCTS-202406 2943 BROMODICHLOROMETHANE 6.800 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_002 DISINFECTION BYPRODUCTS-202406 2942 BROMOFORM 2.300 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_002 DISINFECTION BYPRODUCTS-202406 2941 CHLOROFORM 5.800 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_002 DISINFECTION BYPRODUCTS-202403 2454 DIBROMOACETIC ACID 5.000 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_002 DISINFECTION BYPRODUCTS-202406 2944 DIBROMOCHLOROMETHANE 6.300 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_002 DISINFECTION BYPRODUCTS-202403 2451 DICHLOROACETIC ACID 6.000 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_002 DISINFECTION BYPRODUCTS-202403 2456 TOTAL HALOACETIC ACIDS (HAA5) 12.000 6.000 UG/L 60 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_002 DISINFECTION BYPRODUCTS-202403 2453 MONOBROMOACETIC ACID < 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_002 DISINFECTION BYPRODUCTS-202403 2450 MONOCHLOROACETIC ACID < 2.000 UG/L 2 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_002 DISINFECTION BYPRODUCTS-202406 2950 TTHM 21.000 0.500 UG/L 80 03-19-2024 3 2024/06
CA5610016_DST_002 DISINFECTION BYPRODUCTS-202403 2452 TRICHLOROACETIC ACID 1.000 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_003 DISINFECTION BYPRODUCTS-202406 2943 BROMODICHLOROMETHANE 20.000 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_003 DISINFECTION BYPRODUCTS-202406 2942 BROMOFORM 1.200 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_003 DISINFECTION BYPRODUCTS-202406 2941 CHLOROFORM 20.000 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_003 DISINFECTION BYPRODUCTS-202403 2454 DIBROMOACETIC ACID 5.000 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_003 DISINFECTION BYPRODUCTS-202406 2944 DIBROMOCHLOROMETHANE 10.000 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_003 DISINFECTION BYPRODUCTS-202403 2451 DICHLOROACETIC ACID 6.000 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_003 DISINFECTION BYPRODUCTS-202403 2456 TOTAL HALOACETIC ACIDS (HAA5) 12.000 6.000 UG/L 60 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_003 DISINFECTION BYPRODUCTS-202403 2453 MONOBROMOACETIC ACID < 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_003 DISINFECTION BYPRODUCTS-202403 2450 MONOCHLOROACETIC ACID < 2.000 UG/L 2 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_003 DISINFECTION BYPRODUCTS-202406 2950 TTHM 51.000 0.500 UG/L 80 03-19-2024 3 2024/06
CA5610016_DST_003 DISINFECTION BYPRODUCTS-202403 2452 TRICHLOROACETIC ACID 1.000 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_004 DISINFECTION BYPRODUCTS-202406 2943 BROMODICHLOROMETHANE 11.000 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_004 DISINFECTION BYPRODUCTS-202406 2942 BROMOFORM 1.900 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_004 DISINFECTION BYPRODUCTS-202406 2941 CHLOROFORM 11.000 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_004 DISINFECTION BYPRODUCTS-202403 2454 DIBROMOACETIC ACID 5.000 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_004 DISINFECTION BYPRODUCTS-202406 2944 DIBROMOCHLOROMETHANE 7.900 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_004 DISINFECTION BYPRODUCTS-202403 2451 DICHLOROACETIC ACID 7.000 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_004 DISINFECTION BYPRODUCTS-202403 2456 TOTAL HALOACETIC ACIDS (HAA5) 13.000 6.000 UG/L 60 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_004 DISINFECTION BYPRODUCTS-202403 2453 MONOBROMOACETIC ACID < 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_004 DISINFECTION BYPRODUCTS-202403 2450 MONOCHLOROACETIC ACID < 2.000 UG/L 2 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_004 DISINFECTION BYPRODUCTS-202406 2950 TTHM 32.000 0.500 UG/L 80 03-19-2024 3 2024/06
CA5610016_DST_004 DISINFECTION BYPRODUCTS-202403 2452 TRICHLOROACETIC ACID 1.000 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_005 DISINFECTION BYPRODUCTS-202406 2943 BROMODICHLOROMETHANE 13.000 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_005 DISINFECTION BYPRODUCTS-202406 2942 BROMOFORM 1.700 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_005 DISINFECTION BYPRODUCTS-202406 2941 CHLOROFORM 13.000 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_005 DISINFECTION BYPRODUCTS-202403 2454 DIBROMOACETIC ACID 4.000 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_005 DISINFECTION BYPRODUCTS-202406 2944 DIBROMOCHLOROMETHANE 8.200 0.500 UG/L 1 03-19-2024 3 2024/06
CA5610016_DST_005 DISINFECTION BYPRODUCTS-202403 2451 DICHLOROACETIC ACID 5.000 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_005 DISINFECTION BYPRODUCTS-202403 2456 TOTAL HALOACETIC ACIDS (HAA5) 9.000 6.000 UG/L 60 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_005 DISINFECTION BYPRODUCTS-202403 2453 MONOBROMOACETIC ACID < 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_005 DISINFECTION BYPRODUCTS-202403 2450 MONOCHLOROACETIC ACID < 2.000 UG/L 2 12-18-2023 3 2024/03 DUE NOW
CA5610016_DST_005 DISINFECTION BYPRODUCTS-202406 2950 TTHM 35.000 0.500 UG/L 80 03-19-2024 3 2024/06
CA5610016_DST_005 DISINFECTION BYPRODUCTS-202403 2452 TRICHLOROACETIC ACID < 1.000 UG/L 1 12-18-2023 3 2024/03 DUE NOW
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.