Date:05-19-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:4910006SYSTEM NAME:PETALUMA, CITY OFCOUNTY:SONOMA 
SOURCE NO.:009SOURCE NAME:STATION 09 WELLSOURCE CLASS:CLGISTATUS: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
CA4910006_009_009 SECONDARY/GP-202703 1928 ALKALINITY, BICARBONATE 280.000 5.000 MG/L 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1919 CALCIUM 54.000 1.000 MG/L 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1929 ALKALINITY, CARBONATE < 5.000 MG/L 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1017 CHLORIDE 56.000 5.000 MG/L 500 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1905 COLOR 12.000 5.000 UNITS 15 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1022 COPPER, FREE < 50.000 UG/L 1000 50 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 2905 FOAMING AGENTS (SURFACTANTS) < 0.050 MG/L .5 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1915 HARDNESS, TOTAL (AS CACO3) 267.000 5.000 MG/L 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1021 HYDROXIDE AS CALCIUM CARBONATE < 5.000 MG/L 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202406 1028 IRON 310.000 100.000 UG/L 300 100 03-06-2024 3 2024/06
CA4910006_009_009 SECONDARY/GP-202703 1031 MAGNESIUM 32.000 1.000 MG/L 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1032 MANGANESE 33.000 20.000 UG/L 50 20 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1920 ODOR 1.600 1.000 TON 3 1 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1925 PH 7.900 1.680 pH 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1050 SILVER < 10.000 UG/L 100 10 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1052 SODIUM 52.000 1.000 MG/L 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1064 CONDUCTIVITY @ 25 C UMHOS/CM 720.000 20.000 UMHO/CM 1600 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1055 SULFATE 35.000 0.500 MG/L 500 .5 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1930 TDS 570.000 10.000 MG/L 1000 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 0100 TURBIDITY 1.300 0.200 NTU 5 .1 03-06-2024 36 2027/03
CA4910006_009_009 SECONDARY/GP-202703 1095 ZINC < 50.000 UG/L 5000 50 03-06-2024 36 2027/03
CA4910006_009_009 INORGANIC-202703 1002 ALUMINUM 55.000 50.000 UG/L 1000 50 03-06-2024 36 2027/03
CA4910006_009_009 INORGANIC-202703 1074 ANTIMONY, TOTAL < 6.000 UG/L 6 6 03-06-2024 36 2027/03
CA4910006_009_009 INORGANIC-202703 1005 ARSENIC 2.200 2.000 UG/L 10 2 03-06-2024 36 2027/03
CA4910006_009_009 INORGANIC-202703 1094 ASBESTOS 0.300 0.200 MFL 7 .2 03-14-2018 108 2027/03
CA4910006_009_009 INORGANIC-202703 1010 BARIUM < 100.000 UG/L 1000 100 03-06-2024 36 2027/03
CA4910006_009_009 INORGANIC-202703 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 03-06-2024 36 2027/03
CA4910006_009_009 INORGANIC-202703 1015 CADMIUM < 1.000 UG/L 5 1 03-06-2024 36 2027/03
CA4910006_009_009 INORGANIC-202703 1020 CHROMIUM < 10.000 UG/L 50 10 03-06-2024 36 2027/03
CA4910006_009_009 INORGANIC-202703 1025 FLUORIDE 0.120 0.100 MG/L 2 .1 03-06-2024 36 2027/03
CA4910006_009_009 INORGANIC-202703 1035 MERCURY < 1.000 UG/L 2 1 03-06-2024 36 2027/03
CA4910006_009_009 INORGANIC-202703 1036 NICKEL < 10.000 UG/L 100 10 03-06-2024 36 2027/03
CA4910006_009_009 INORGANIC-202603 1039 PERCHLORATE < 2.000 UG/L 6 2 03-08-2023 36 2026/03
CA4910006_009_009 INORGANIC-202703 1045 SELENIUM < 5.000 UG/L 50 5 03-06-2024 36 2027/03
CA4910006_009_009 INORGANIC-202703 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 03-06-2024 36 2027/03
CA4910006_009_009 NITRATE/NITRITE-202503 1040 NITRATE < 0.400 MG/L 10 .4 03-06-2024 12 2025/03
CA4910006_009_009 NITRATE/NITRITE-202703 1041 NITRITE < 0.400 MG/L 1 .4 03-06-2024 36 2027/03
CA4910006_009_009 RADIOLOGICAL-202902 4109 GROSS ALPHA PARTICLE ACTIVITY 0.576 +/- 1.670 2.400 PCI/L 15 3 02-26-2020 108 2029/02
CA4910006_009_009 REGULATED VOC-202703 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2990 BENZENE < 0.500 UG/L 1 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2251 METHYL TERT-BUTYL ETHER < 3.000 UG/L 13 3 03-06-2024 36 2027/03
CA4910006_009_009 REGULATED VOC-202703 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2996 STYRENE < 0.500 UG/L 100 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2991 TOLUENE < 0.500 UG/L 150 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2218 TRICHLOROFLUOROMETHANE < 5.000 UG/L 150 5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2904 TRICHLOROTRIFLUOROETHANE < 10.000 UG/L 1200 10 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED VOC-202703 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 03-09-2021 72 2027/03
CA4910006_009_009 REGULATED SOC-202703 2414 1,2,3-TRICHLOROPROPANE < 0.005 UG/L 0.005 03-06-2024 36 2027/03
CA4910006_009_009 REGULATED SOC-202403 2050 ATRAZINE < 0.500 UG/L 1 .5 03-09-2021 36 2024/03 DUE NOW
CA4910006_009_009 REGULATED SOC-202403 2031 DALAPON < 10.000 UG/L 200 10 03-09-2021 36 2024/03 DUE NOW
CA4910006_009_009 REGULATED SOC-202403 2035 DI(2-ETHYLHEXYL) ADIPATE < 5.000 UG/L 400 5 03-09-2021 36 2024/03 DUE NOW
CA4910006_009_009 REGULATED SOC-202403 2039 DI(2-ETHYLHEXYL) PHTHALATE < 3.000 UG/L 4 3 03-09-2021 36 2024/03 DUE NOW
CA4910006_009_009 REGULATED SOC-202403 2040 PICLORAM < 1.000 UG/L 500 1 03-09-2021 36 2024/03 DUE NOW
CA4910006_009_009 REGULATED SOC-202403 2383 TOTAL POLYCHLORINATED BIPHENYLS (PCB) < 0.500 UG/L .5 .5 03-09-2021 36 2024/03 DUE NOW
CA4910006_009_009 REGULATED SOC-202403 2037 SIMAZINE < 1.000 UG/L 4 1 03-09-2021 36 2024/03 DUE NOW
CA4910006_009_009 GENERAL NON CHAP 15-202703 1927 ALKALINITY, TOTAL 280.000 5.000 MG/L 03-06-2024 36 2027/03
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.