Date:07-24-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:1910234SYSTEM NAME:WALNUT VALLEY WATER DISTRICTCOUNTY:LOS ANGELES 
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
CA1910234_001_001 REGULATED SOC-null 2414 1,2,3-TRICHLOROPROPANE UG/L 0.005 3 DUE NOW
CA1910234_002_002 REGULATED SOC-null 2414 1,2,3-TRICHLOROPROPANE UG/L 0.005 3 DUE NOW
CA1910234_003_003 REGULATED SOC-null 2414 1,2,3-TRICHLOROPROPANE UG/L 0.005 3 DUE NOW
CA1910234_004_004 REGULATED SOC-null 2414 1,2,3-TRICHLOROPROPANE UG/L 0.005 3 DUE NOW
CA1910234_005_005 REGULATED SOC-null 2414 1,2,3-TRICHLOROPROPANE UG/L 0.005 3 DUE NOW
CA1910234_DST_800 DISINFECTION BYPRODUCTS-202402 2943 BROMODICHLOROMETHANE 11.000 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_800 DISINFECTION BYPRODUCTS-202402 2942 BROMOFORM 3.000 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_800 DISINFECTION BYPRODUCTS-202402 2941 CHLOROFORM 8.800 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_800 DISINFECTION BYPRODUCTS-202408 2454 DIBROMOACETIC ACID 3.200 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_800 DISINFECTION BYPRODUCTS-202402 2944 DIBROMOCHLOROMETHANE 10.000 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_800 DISINFECTION BYPRODUCTS-202408 2451 DICHLOROACETIC ACID 11.000 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_800 DISINFECTION BYPRODUCTS-202408 2456 TOTAL HALOACETIC ACIDS (HAA5) 18.000 2.000 UG/L 60 05-14-2024 3 2024/08
CA1910234_DST_800 DISINFECTION BYPRODUCTS-202408 2453 MONOBROMOACETIC ACID < 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_800 DISINFECTION BYPRODUCTS-202408 2450 MONOCHLOROACETIC ACID < 2.000 UG/L 2 05-14-2024 3 2024/08
CA1910234_DST_800 DISINFECTION BYPRODUCTS-202311 2950 TTHM 23.600 1.000 UG/L 80 08-08-2023 3 2023/11 DUE NOW
CA1910234_DST_800 DISINFECTION BYPRODUCTS-202408 2452 TRICHLOROACETIC ACID 3.600 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_800 REGULATED SOC-null 2414 1,2,3-TRICHLOROPROPANE UG/L 0.005 3 DUE NOW
CA1910234_DST_801 DISINFECTION BYPRODUCTS-202402 2943 BROMODICHLOROMETHANE 11.000 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_801 DISINFECTION BYPRODUCTS-202402 2942 BROMOFORM 2.900 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_801 DISINFECTION BYPRODUCTS-202402 2941 CHLOROFORM 10.000 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_801 DISINFECTION BYPRODUCTS-202408 2454 DIBROMOACETIC ACID 3.400 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_801 DISINFECTION BYPRODUCTS-202402 2944 DIBROMOCHLOROMETHANE 10.000 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_801 DISINFECTION BYPRODUCTS-202408 2451 DICHLOROACETIC ACID 12.000 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_801 DISINFECTION BYPRODUCTS-202408 2456 TOTAL HALOACETIC ACIDS (HAA5) 18.000 2.000 UG/L 60 05-14-2024 3 2024/08
CA1910234_DST_801 DISINFECTION BYPRODUCTS-202408 2453 MONOBROMOACETIC ACID < 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_801 DISINFECTION BYPRODUCTS-202408 2450 MONOCHLOROACETIC ACID < 2.000 UG/L 2 05-14-2024 3 2024/08
CA1910234_DST_801 DISINFECTION BYPRODUCTS-202311 2950 TTHM 26.200 1.000 UG/L 80 08-08-2023 3 2023/11 DUE NOW
CA1910234_DST_801 DISINFECTION BYPRODUCTS-202408 2452 TRICHLOROACETIC ACID 2.800 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_801 REGULATED SOC-null 2414 1,2,3-TRICHLOROPROPANE UG/L 0.005 3 DUE NOW
CA1910234_DST_802 DISINFECTION BYPRODUCTS-202402 2943 BROMODICHLOROMETHANE 8.200 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_802 DISINFECTION BYPRODUCTS-202402 2942 BROMOFORM 4.000 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_802 DISINFECTION BYPRODUCTS-202402 2941 CHLOROFORM 6.600 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_802 DISINFECTION BYPRODUCTS-202408 2454 DIBROMOACETIC ACID 2.300 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_802 DISINFECTION BYPRODUCTS-202402 2944 DIBROMOCHLOROMETHANE 10.000 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_802 DISINFECTION BYPRODUCTS-202408 2451 DICHLOROACETIC ACID 6.100 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_802 DISINFECTION BYPRODUCTS-202408 2456 TOTAL HALOACETIC ACIDS (HAA5) 11.000 2.000 UG/L 60 05-14-2024 3 2024/08
CA1910234_DST_802 DISINFECTION BYPRODUCTS-202408 2453 MONOBROMOACETIC ACID < 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_802 DISINFECTION BYPRODUCTS-202408 2450 MONOCHLOROACETIC ACID < 2.000 UG/L 2 05-14-2024 3 2024/08
CA1910234_DST_802 DISINFECTION BYPRODUCTS-202311 2950 TTHM 19.800 1.000 UG/L 80 08-08-2023 3 2023/11 DUE NOW
CA1910234_DST_802 DISINFECTION BYPRODUCTS-202408 2452 TRICHLOROACETIC ACID 2.300 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_802 REGULATED SOC-null 2414 1,2,3-TRICHLOROPROPANE UG/L 0.005 3 DUE NOW
CA1910234_DST_803 DISINFECTION BYPRODUCTS-202402 2943 BROMODICHLOROMETHANE 10.000 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_803 DISINFECTION BYPRODUCTS-202402 2942 BROMOFORM 2.600 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_803 DISINFECTION BYPRODUCTS-202402 2941 CHLOROFORM 8.600 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_803 DISINFECTION BYPRODUCTS-202408 2454 DIBROMOACETIC ACID 3.400 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_803 DISINFECTION BYPRODUCTS-202402 2944 DIBROMOCHLOROMETHANE 9.100 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_803 DISINFECTION BYPRODUCTS-202408 2451 DICHLOROACETIC ACID 12.000 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_803 DISINFECTION BYPRODUCTS-202408 2456 TOTAL HALOACETIC ACIDS (HAA5) 19.000 2.000 UG/L 60 05-14-2024 3 2024/08
CA1910234_DST_803 DISINFECTION BYPRODUCTS-202408 2453 MONOBROMOACETIC ACID < 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_803 DISINFECTION BYPRODUCTS-202408 2450 MONOCHLOROACETIC ACID < 2.000 UG/L 2 05-14-2024 3 2024/08
CA1910234_DST_803 DISINFECTION BYPRODUCTS-202311 2950 TTHM 20.400 1.000 UG/L 80 08-08-2023 3 2023/11 DUE NOW
CA1910234_DST_803 DISINFECTION BYPRODUCTS-202408 2452 TRICHLOROACETIC ACID 3.300 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_803 REGULATED SOC-null 2414 1,2,3-TRICHLOROPROPANE UG/L 0.005 3 DUE NOW
CA1910234_DST_804 DISINFECTION BYPRODUCTS-202402 2943 BROMODICHLOROMETHANE 9.300 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_804 DISINFECTION BYPRODUCTS-202402 2942 BROMOFORM 3.100 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_804 DISINFECTION BYPRODUCTS-202402 2941 CHLOROFORM 7.700 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_804 DISINFECTION BYPRODUCTS-202408 2454 DIBROMOACETIC ACID 3.500 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_804 DISINFECTION BYPRODUCTS-202402 2944 DIBROMOCHLOROMETHANE 8.800 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_804 DISINFECTION BYPRODUCTS-202408 2451 DICHLOROACETIC ACID 13.000 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_804 DISINFECTION BYPRODUCTS-202408 2456 TOTAL HALOACETIC ACIDS (HAA5) 19.000 2.000 UG/L 60 05-14-2024 3 2024/08
CA1910234_DST_804 DISINFECTION BYPRODUCTS-202408 2453 MONOBROMOACETIC ACID < 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_804 DISINFECTION BYPRODUCTS-202408 2450 MONOCHLOROACETIC ACID < 2.000 UG/L 2 05-14-2024 3 2024/08
CA1910234_DST_804 DISINFECTION BYPRODUCTS-202311 2950 TTHM 21.300 1.000 UG/L 80 08-08-2023 3 2023/11 DUE NOW
CA1910234_DST_804 DISINFECTION BYPRODUCTS-202408 2452 TRICHLOROACETIC ACID 3.100 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_804 REGULATED SOC-null 2414 1,2,3-TRICHLOROPROPANE UG/L 0.005 3 DUE NOW
CA1910234_DST_805 DISINFECTION BYPRODUCTS-202402 2943 BROMODICHLOROMETHANE 6.600 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_805 DISINFECTION BYPRODUCTS-202402 2942 BROMOFORM 3.300 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_805 DISINFECTION BYPRODUCTS-202402 2941 CHLOROFORM 6.000 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_805 DISINFECTION BYPRODUCTS-202408 2454 DIBROMOACETIC ACID 3.800 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_805 DISINFECTION BYPRODUCTS-202402 2944 DIBROMOCHLOROMETHANE 8.400 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_805 DISINFECTION BYPRODUCTS-202408 2451 DICHLOROACETIC ACID 15.000 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_805 DISINFECTION BYPRODUCTS-202408 2456 TOTAL HALOACETIC ACIDS (HAA5) 23.000 2.000 UG/L 60 05-14-2024 3 2024/08
CA1910234_DST_805 DISINFECTION BYPRODUCTS-202408 2453 MONOBROMOACETIC ACID < 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_805 DISINFECTION BYPRODUCTS-202408 2450 MONOCHLOROACETIC ACID < 2.000 UG/L 2 05-14-2024 3 2024/08
CA1910234_DST_805 DISINFECTION BYPRODUCTS-202311 2950 TTHM 18.800 1.000 UG/L 80 08-08-2023 3 2023/11 DUE NOW
CA1910234_DST_805 DISINFECTION BYPRODUCTS-202408 2452 TRICHLOROACETIC ACID 4.800 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_805 REGULATED SOC-null 2414 1,2,3-TRICHLOROPROPANE UG/L 0.005 3 DUE NOW
CA1910234_DST_806 DISINFECTION BYPRODUCTS-202402 2943 BROMODICHLOROMETHANE 5.100 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_806 DISINFECTION BYPRODUCTS-202402 2942 BROMOFORM 2.600 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_806 DISINFECTION BYPRODUCTS-202402 2941 CHLOROFORM 4.400 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_806 DISINFECTION BYPRODUCTS-202408 2454 DIBROMOACETIC ACID 3.400 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_806 DISINFECTION BYPRODUCTS-202402 2944 DIBROMOCHLOROMETHANE 6.600 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_806 DISINFECTION BYPRODUCTS-202408 2451 DICHLOROACETIC ACID 13.000 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_806 DISINFECTION BYPRODUCTS-202408 2456 TOTAL HALOACETIC ACIDS (HAA5) 20.000 2.000 UG/L 60 05-14-2024 3 2024/08
CA1910234_DST_806 DISINFECTION BYPRODUCTS-202408 2453 MONOBROMOACETIC ACID < 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_806 DISINFECTION BYPRODUCTS-202408 2450 MONOCHLOROACETIC ACID < 2.000 UG/L 2 05-14-2024 3 2024/08
CA1910234_DST_806 DISINFECTION BYPRODUCTS-202311 2950 TTHM 20.500 1.000 UG/L 80 08-08-2023 3 2023/11 DUE NOW
CA1910234_DST_806 DISINFECTION BYPRODUCTS-202408 2452 TRICHLOROACETIC ACID 3.700 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_806 REGULATED SOC-null 2414 1,2,3-TRICHLOROPROPANE UG/L 0.005 3 DUE NOW
CA1910234_DST_807 DISINFECTION BYPRODUCTS-202402 2943 BROMODICHLOROMETHANE 9.100 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_807 DISINFECTION BYPRODUCTS-202402 2942 BROMOFORM 3.200 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_807 DISINFECTION BYPRODUCTS-202402 2941 CHLOROFORM 7.700 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_807 DISINFECTION BYPRODUCTS-202408 2454 DIBROMOACETIC ACID 3.400 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_807 DISINFECTION BYPRODUCTS-202402 2944 DIBROMOCHLOROMETHANE 9.100 0.500 UG/L 1 11-14-2023 3 2024/02 DUE NOW
CA1910234_DST_807 DISINFECTION BYPRODUCTS-202408 2451 DICHLOROACETIC ACID 11.000 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_807 DISINFECTION BYPRODUCTS-202408 2456 TOTAL HALOACETIC ACIDS (HAA5) 17.000 2.000 UG/L 60 05-14-2024 3 2024/08
CA1910234_DST_807 DISINFECTION BYPRODUCTS-202408 2453 MONOBROMOACETIC ACID < 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_807 DISINFECTION BYPRODUCTS-202408 2450 MONOCHLOROACETIC ACID < 2.000 UG/L 2 05-14-2024 3 2024/08
CA1910234_DST_807 DISINFECTION BYPRODUCTS-202311 2950 TTHM 20.500 1.000 UG/L 80 08-08-2023 3 2023/11 DUE NOW
CA1910234_DST_807 DISINFECTION BYPRODUCTS-202408 2452 TRICHLOROACETIC ACID 2.600 1.000 UG/L 1 05-14-2024 3 2024/08
CA1910234_DST_807 REGULATED SOC-null 2414 1,2,3-TRICHLOROPROPANE UG/L 0.005 3 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.