Date:05-17-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:4100551SYSTEM NAME:MARCHI CENTRAL FARMCOUNTY:SAN MATEO 
SOURCE NO.:900SOURCE NAME:LOWER SA...*SOURCE CLASS:DBPASTATUS: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
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2943 BROMODICHLOROMETHANE 22.000 0.400 UG/L 1 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2942 BROMOFORM 4.800 0.400 UG/L 1 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2941 CHLOROFORM 15.000 0.400 UG/L 1 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2454 DIBROMOACETIC ACID 2.200 0.130 UG/L 1 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2944 DIBROMOCHLOROMETHANE 28.000 0.400 UG/L 1 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2451 DICHLOROACETIC ACID 1.600 0.130 UG/L 1 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2456 TOTAL HALOACETIC ACIDS (HAA5) 9.600 0.130 UG/L 60 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2453 MONOBROMOACETIC ACID 0.130 0.130 UG/L 1 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2450 MONOCHLOROACETIC ACID 0.320 0.270 UG/L 2 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2950 TTHM 70.000 0.400 UG/L 80 08-01-2023 12 2024/08
CA4100551_DST_900 DISINFECTION BYPRODUCTS-202408 2452 TRICHLOROACETIC ACID 5.400 0.130 UG/L 1 08-01-2023 12 2024/08
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.