Date:05-18-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:4900905SYSTEM NAME:MARK WEST MEADOWS MUTUAL WATERCOUNTY:SONOMA 
SOURCE NO.:004SOURCE NAME:WELL 02SOURCE CLASS:CTGASTATUS: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
CA4900905_004_004 SECONDARY/GP-202511 1928 ALKALINITY, BICARBONATE 200.000 1.000 MG/L 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1919 CALCIUM 32.000 1.000 MG/L 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1929 ALKALINITY, CARBONATE < 1.000 MG/L 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1017 CHLORIDE 4.800 0.500 MG/L 500 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1905 COLOR 5.000 5.000 UNITS 15 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1022 COPPER, FREE < 50.000 UG/L 1000 50 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 2905 FOAMING AGENTS (SURFACTANTS) < 0.050 MG/L .5 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1915 HARDNESS, TOTAL (AS CACO3) 170.000 2.000 MG/L 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1021 HYDROXIDE AS CALCIUM CARBONATE < 1.000 MG/L 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1028 IRON < 100.000 UG/L 300 100 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1031 MAGNESIUM 23.000 1.000 MG/L 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1032 MANGANESE 41.000 20.000 UG/L 50 20 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1920 ODOR < 1.000 TON 3 1 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1925 PH 7.600 1.000 pH 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1050 SILVER < 10.000 UG/L 100 10 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1052 SODIUM 14.000 1.000 MG/L 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1064 CONDUCTIVITY @ 25 C UMHOS/CM 360.000 10.000 UMHO/CM 1600 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1055 SULFATE 35.000 0.500 MG/L 500 .5 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1930 TDS 250.000 10.000 MG/L 1000 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 0100 TURBIDITY 0.450 0.100 NTU 5 .1 11-10-2022 36 2025/11
CA4900905_004_004 SECONDARY/GP-202511 1095 ZINC < 50.000 UG/L 5000 50 11-10-2022 36 2025/11
CA4900905_004_004 INORGANIC-202511 1002 ALUMINUM < 50.000 UG/L 1000 50 11-10-2022 36 2025/11
CA4900905_004_004 INORGANIC-202511 1074 ANTIMONY, TOTAL < 6.000 UG/L 6 6 11-10-2022 36 2025/11
CA4900905_004_004 INORGANIC-202511 1005 ARSENIC < 2.000 UG/L 10 2 11-10-2022 36 2025/11
CA4900905_004_004 INORGANIC-202811 1094 ASBESTOS < 0.200 MFL 7 .2 11-19-2019 108 2028/11
CA4900905_004_004 INORGANIC-202511 1010 BARIUM < 100.000 UG/L 1000 100 11-10-2022 36 2025/11
CA4900905_004_004 INORGANIC-202511 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 11-10-2022 36 2025/11
CA4900905_004_004 INORGANIC-202511 1015 CADMIUM < 1.000 UG/L 5 1 11-10-2022 36 2025/11
CA4900905_004_004 INORGANIC-202511 1020 CHROMIUM < 1.000 UG/L 50 10 11-10-2022 36 2025/11
CA4900905_004_004 INORGANIC-202511 1025 FLUORIDE < 0.100 MG/L 2 .1 11-10-2022 36 2025/11
CA4900905_004_004 INORGANIC-202511 1035 MERCURY < 1.000 UG/L 2 1 11-10-2022 36 2025/11
CA4900905_004_004 INORGANIC-202511 1036 NICKEL < 10.000 UG/L 100 10 11-10-2022 36 2025/11
CA4900905_004_004 INORGANIC-202511 1039 PERCHLORATE < 2.000 UG/L 6 2 11-10-2022 36 2025/11
CA4900905_004_004 INORGANIC-202511 1045 SELENIUM < 5.000 UG/L 50 5 11-10-2022 36 2025/11
CA4900905_004_004 INORGANIC-202511 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 11-10-2022 36 2025/11
CA4900905_004_004 NITRATE/NITRITE-202411 1040 NITRATE < 0.400 MG/L 10 .4 11-03-2023 12 2024/11
CA4900905_004_004 NITRATE/NITRITE-202511 1041 NITRITE < 0.400 MG/L 1 .4 11-10-2022 36 2025/11
CA4900905_004_004 RADIOLOGICAL-202811 4109 GROSS ALPHA PARTICLE ACTIVITY 1.040 +/- 1.480 1.900 PCI/L 15 3 11-19-2019 108 2028/11
CA4900905_004_004 REGULATED VOC-202703 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2990 BENZENE < 0.500 UG/L 1 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2251 METHYL TERT-BUTYL ETHER < 3.000 UG/L 13 3 03-13-2024 36 2027/03
CA4900905_004_004 REGULATED VOC-202703 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2996 STYRENE < 0.500 UG/L 100 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2991 TOLUENE < 0.500 UG/L 150 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2218 TRICHLOROFLUOROMETHANE < 5.000 UG/L 150 5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2904 TRICHLOROTRIFLUOROETHANE < 10.000 UG/L 1200 10 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED VOC-202703 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 03-05-2021 72 2027/03
CA4900905_004_004 REGULATED SOC-202608 2414 1,2,3-TRICHLOROPROPANE < 0.005 UG/L 0.005 08-11-2023 36 2026/08
CA4900905_004_004 REGULATED SOC-203111 2110 2,4,5-TP < 1.000 UG/L 50 1 11-10-2022 108 2031/11
CA4900905_004_004 REGULATED SOC-203111 2105 2,4-D < 10.000 UG/L 70 10 11-10-2022 108 2031/11
CA4900905_004_004 REGULATED SOC-202511 2050 ATRAZINE < 0.250 UG/L 1 .5 11-10-2022 36 2025/11
CA4900905_004_004 REGULATED SOC-202511 2046 CARBOFURAN < 5.000 UG/L 18 5 11-10-2022 36 2025/11
CA4900905_004_004 REGULATED SOC-202511 2031 DALAPON < 10.000 UG/L 200 10 11-10-2022 36 2025/11
CA4900905_004_004 REGULATED SOC-202511 2041 DINOSEB < 2.000 UG/L 7 2 11-10-2022 36 2025/11
CA4900905_004_004 REGULATED SOC-202511 2032 DIQUAT < 0.400 UG/L 20 4 11-10-2022 36 2025/11
CA4900905_004_004 REGULATED SOC-202511 2033 ENDOTHALL < 45.000 UG/L 100 45 11-10-2022 36 2025/11
CA4900905_004_004 REGULATED SOC-202811 2946 ETHYLENE DIBROMIDE < UG/L .05 .02 11-19-2019 108 2028/11
CA4900905_004_004 REGULATED SOC-202811 2065 HEPTACHLOR < UG/L .01 .01 11-19-2019 108 2028/11
CA4900905_004_004 REGULATED SOC-202811 2067 HEPTACHLOR EPOXIDE < UG/L .01 .01 11-19-2019 108 2028/11
CA4900905_004_004 REGULATED SOC-202811 2010 BHC-GAMMA < 0.200 UG/L .2 .2 11-19-2019 108 2028/11
CA4900905_004_004 REGULATED SOC-202811 2015 METHOXYCHLOR < 10.000 UG/L 30 10 11-19-2019 108 2028/11
CA4900905_004_004 REGULATED SOC-202511 2036 OXAMYL < 5.000 UG/L 50 20 11-10-2022 36 2025/11
CA4900905_004_004 REGULATED SOC-202511 2326 PENTACHLOROPHENOL < 0.200 UG/L 1 .2 11-10-2022 36 2025/11
CA4900905_004_004 REGULATED SOC-202511 2040 PICLORAM < 1.000 UG/L 500 1 11-10-2022 36 2025/11
CA4900905_004_004 REGULATED SOC-202511 2037 SIMAZINE < 0.250 UG/L 4 1 11-10-2022 36 2025/11
CA4900905_004_004 REGULATED SOC-202811 2020 TOXAPHENE < 1.000 UG/L 3 1 11-19-2019 108 2028/11
CA4900905_004_004 GENERAL NON CHAP 15-202511 1927 ALKALINITY, TOTAL 160.000 20.000 MG/L 11-10-2022 36 2025/11
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.