Date:05-14-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:4000523SYSTEM NAME:S & T MUTUAL WATER COMPANYCOUNTY:SAN LUIS OBISPO 
SOURCE NO.:500SOURCE NAME:DISINFEC...*SOURCE CLASS:DBPTSTATUS: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
CA4000523_DST_500 DISINFECTION BYPRODUCTS-202611 2943 BROMODICHLOROMETHANE < 0.500 UG/L 1 11-15-2023 36 2026/11
CA4000523_DST_500 DISINFECTION BYPRODUCTS-202611 2942 BROMOFORM 2.400 0.500 UG/L 1 11-15-2023 36 2026/11
CA4000523_DST_500 DISINFECTION BYPRODUCTS-202611 2941 CHLOROFORM < 0.500 UG/L 1 11-15-2023 36 2026/11
CA4000523_DST_500 DISINFECTION BYPRODUCTS-202611 2454 DIBROMOACETIC ACID 1.300 1.000 UG/L 1 11-15-2023 36 2026/11
CA4000523_DST_500 DISINFECTION BYPRODUCTS-202611 2944 DIBROMOCHLOROMETHANE 1.200 0.500 UG/L 1 11-15-2023 36 2026/11
CA4000523_DST_500 DISINFECTION BYPRODUCTS-202611 2451 DICHLOROACETIC ACID < 1.000 UG/L 1 11-15-2023 36 2026/11
CA4000523_DST_500 DISINFECTION BYPRODUCTS-202310 2456 TOTAL HALOACETIC ACIDS (HAA5) < UG/L 60 10-01-2020 36 2023/10 DUE NOW
CA4000523_DST_500 DISINFECTION BYPRODUCTS-202611 2453 MONOBROMOACETIC ACID < 1.000 UG/L 1 11-15-2023 36 2026/11
CA4000523_DST_500 DISINFECTION BYPRODUCTS-202611 2450 MONOCHLOROACETIC ACID < 2.000 UG/L 2 11-15-2023 36 2026/11
CA4000523_DST_500 DISINFECTION BYPRODUCTS-202310 2950 TTHM 2.400 UG/L 80 10-01-2020 36 2023/10 DUE NOW
CA4000523_DST_500 DISINFECTION BYPRODUCTS-202611 2452 TRICHLOROACETIC ACID < 1.000 UG/L 1 11-15-2023 36 2026/11
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.