Date:05-18-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:4900893SYSTEM NAME:WEST WATER COMPANY (PUC)COUNTY:SONOMA 
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
CA4900893_001_001 SECONDARY/GP-202409 1928 ALKALINITY, BICARBONATE 160.000 MG/L 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1919 CALCIUM 25.000 MG/L 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1929 ALKALINITY, CARBONATE < MG/L 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1017 CHLORIDE 5.500 MG/L 500 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1905 COLOR < UNITS 15 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1022 COPPER, FREE < 50.000 UG/L 1000 50 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 2905 FOAMING AGENTS (SURFACTANTS) < MG/L .5 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1915 HARDNESS, TOTAL (AS CACO3) 109.000 MG/L 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1021 HYDROXIDE AS CALCIUM CARBONATE < MG/L 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1028 IRON < 100.000 UG/L 300 100 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1031 MAGNESIUM 11.000 MG/L 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1032 MANGANESE < 20.000 UG/L 50 20 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1920 ODOR < 1.000 TON 3 1 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1925 PH 7.610 pH 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1050 SILVER < 10.000 UG/L 100 10 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1052 SODIUM 7.600 MG/L 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202511 1064 CONDUCTIVITY @ 25 C UMHOS/CM 340.000 UMHO/CM 1600 11-09-2016 108 2025/11
CA4900893_001_001 SECONDARY/GP-202409 1055 SULFATE 12.000 0.500 MG/L 500 .5 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1930 TDS 170.000 MG/L 1000 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 0100 TURBIDITY 3.400 0.100 NTU 5 .1 09-07-2015 108 2024/09
CA4900893_001_001 SECONDARY/GP-202409 1095 ZINC < 50.000 UG/L 5000 50 09-07-2015 108 2024/09
CA4900893_001_001 INORGANIC-203001 1002 ALUMINUM < 50.000 UG/L 1000 50 01-26-2021 108 2030/01
CA4900893_001_001 INORGANIC-203001 1074 ANTIMONY, TOTAL < 6.000 UG/L 6 6 01-26-2021 108 2030/01
CA4900893_001_001 INORGANIC-202401 1005 ARSENIC < 2.000 UG/L 10 2 01-26-2021 36 2024/01 DUE NOW
CA4900893_001_001 INORGANIC-202808 1094 ASBESTOS < 0.200 MFL 7 .2 08-27-2019 108 2028/08
CA4900893_001_001 INORGANIC-203001 1010 BARIUM 110.000 100.000 UG/L 1000 100 01-26-2021 108 2030/01
CA4900893_001_001 INORGANIC-203001 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 01-26-2021 108 2030/01
CA4900893_001_001 INORGANIC-203001 1015 CADMIUM < 1.000 UG/L 5 1 01-26-2021 108 2030/01
CA4900893_001_001 INORGANIC-203001 1020 CHROMIUM < 1.000 UG/L 50 10 01-26-2021 108 2030/01
CA4900893_001_001 INORGANIC-203001 1025 FLUORIDE 0.320 0.100 MG/L 2 .1 01-26-2021 108 2030/01
CA4900893_001_001 INORGANIC-203001 1035 MERCURY < 1.000 UG/L 2 1 01-26-2021 108 2030/01
CA4900893_001_001 INORGANIC-203001 1036 NICKEL < 10.000 UG/L 100 10 01-26-2021 108 2030/01
CA4900893_001_001 INORGANIC-202512 1039 PERCHLORATE < 2.000 UG/L 6 2 12-13-2022 36 2025/12
CA4900893_001_001 INORGANIC-203001 1045 SELENIUM < 5.000 UG/L 50 5 01-26-2021 108 2030/01
CA4900893_001_001 INORGANIC-203001 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 01-26-2021 108 2030/01
CA4900893_001_001 NITRATE/NITRITE-202406 1040 NITRATE < 0.400 MG/L 10 .4 06-05-2023 12 2024/06
CA4900893_001_001 NITRATE/NITRITE-202606 1041 NITRITE < 0.400 MG/L 1 .4 06-05-2023 36 2026/06
CA4900893_001_001 RADIOLOGICAL-202505 4109 GROSS ALPHA PARTICLE ACTIVITY 0.020 +/- 0.765 1.300 PCI/L 15 3 05-12-2016 108 2025/05
CA4900893_001_001 REGULATED VOC-202609 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2990 BENZENE < 0.500 UG/L 1 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2251 METHYL TERT-BUTYL ETHER < 3.000 UG/L 13 3 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2996 STYRENE < 0.500 UG/L 100 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2991 TOLUENE < 0.500 UG/L 150 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2218 TRICHLOROFLUOROMETHANE < 5.000 UG/L 150 5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2904 TRICHLOROTRIFLUOROETHANE < 10.000 UG/L 1200 10 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 09-15-2020 72 2026/09
CA4900893_001_001 REGULATED VOC-202609 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 09-15-2020 72 2026/09
CA4900893_001_001 GENERAL NON CHAP 15-202512 1927 ALKALINITY, TOTAL 150.000 20.000 MG/L 12-13-2022 36 2025/12
CA4900893_DST_003 DISINFECTION BYPRODUCTS-202407 2456 TOTAL HALOACETIC ACIDS (HAA5) < 6.000 UG/L 60 07-18-2023 12 2024/07
CA4900893_DST_003 DISINFECTION BYPRODUCTS-202407 2950 TTHM 15.000 4.000 UG/L 80 07-18-2023 12 2024/07
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.