Date:08-10-2026STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:1910443SYSTEM NAME:LOS ANGELES, CITY OF - CASTAIC PWR PLANTCOUNTY:LOS ANGELES 
SOURCE NO.:800SOURCE NAME:CSTCADMI...*SOURCE CLASS:DBPQSTATUS: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
CA1910443_DST_800 DISINFECTION BYPRODUCTS 2943 BROMODICHLOROMETHANE 25.500 0.500 UG/L 1 04-06-2026 3 2026/07 DUE NOW
CA1910443_DST_800 DISINFECTION BYPRODUCTS 2942 BROMOFORM 8.350 0.500 UG/L 1 04-06-2026 3 2026/07 DUE NOW
CA1910443_DST_800 DISINFECTION BYPRODUCTS 2941 CHLOROFORM 14.700 0.500 UG/L 1 04-06-2026 3 2026/07 DUE NOW
CA1910443_DST_800 DISINFECTION BYPRODUCTS 2454 DIBROMOACETIC ACID 6.940 1.000 UG/L 1 04-06-2026 3 2026/07 DUE NOW
CA1910443_DST_800 DISINFECTION BYPRODUCTS 2944 DIBROMOCHLOROMETHANE 30.200 0.500 UG/L 1 04-06-2026 3 2026/07 DUE NOW
CA1910443_DST_800 DISINFECTION BYPRODUCTS 2451 DICHLOROACETIC ACID 8.530 1.000 UG/L 1 04-06-2026 3 2026/07 DUE NOW
CA1910443_DST_800 DISINFECTION BYPRODUCTS 2456 TOTAL HALOACETIC ACIDS (HAA5) 22.900 1.000 UG/L 60 04-06-2026 3 2026/07 DUE NOW
CA1910443_DST_800 DISINFECTION BYPRODUCTS 2453 MONOBROMOACETIC ACID 1.260 1.000 UG/L 1 04-06-2026 3 2026/07 DUE NOW
CA1910443_DST_800 DISINFECTION BYPRODUCTS 2450 MONOCHLOROACETIC ACID 1.380 1.000 UG/L 2 04-06-2026 3 2026/07 DUE NOW
CA1910443_DST_800 DISINFECTION BYPRODUCTS 2950 TTHM 78.800 0.500 UG/L 80 04-06-2026 3 2026/07 DUE NOW
CA1910443_DST_800 DISINFECTION BYPRODUCTS 2452 TRICHLOROACETIC ACID 4.790 1.000 UG/L 1 04-06-2026 3 2026/07 DUE NOW
PS Codes Group Name Analyte Number Analyte Name Detected Level Less Than RL Unit MCL DLR Last Sampled Frequency Next Due Notes

*Please refer to the Stage 2 DBP Monitoring Plan Approval Letter for full sample point names.
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.