Date:05-16-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:4910014SYSTEM NAME:ROHNERT PARK, CITY OFCOUNTY:SONOMA 
SOURCE NO.:021SOURCE NAME:WELL 21SOURCE CLASS:CLGRSTATUS: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
CA4910014_021_021 SECONDARY/GP-202509 1928 ALKALINITY, BICARBONATE 220.000 5.000 MG/L 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1919 CALCIUM 50.000 1.000 MG/L 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1929 ALKALINITY, CARBONATE < 5.000 MG/L 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1017 CHLORIDE 24.000 5.000 MG/L 500 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1905 COLOR 6.000 5.000 UNITS 15 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1022 COPPER, FREE < 50.000 UG/L 1000 50 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 2905 FOAMING AGENTS (SURFACTANTS) < 0.050 MG/L .5 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1915 HARDNESS, TOTAL (AS CACO3) 240.000 5.000 MG/L 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1021 HYDROXIDE AS CALCIUM CARBONATE < 5.000 MG/L 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1028 IRON 520.000 100.000 UG/L 300 100 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1031 MAGNESIUM 28.000 1.000 MG/L 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1032 MANGANESE < 20.000 UG/L 50 20 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1920 ODOR 3.700 1.000 TON 3 1 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1925 PH 7.720 1.680 pH 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1050 SILVER < 10.000 UG/L 100 10 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1052 SODIUM 25.000 1.000 MG/L 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1064 CONDUCTIVITY @ 25 C UMHOS/CM 520.000 20.000 UMHO/CM 1600 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1055 SULFATE 19.000 0.500 MG/L 500 .5 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1930 TDS 320.000 10.000 MG/L 1000 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 0100 TURBIDITY 2.200 0.100 NTU 5 .1 09-06-2022 36 2025/09
CA4910014_021_021 SECONDARY/GP-202509 1095 ZINC < 50.000 UG/L 5000 50 09-06-2022 36 2025/09
CA4910014_021_021 INORGANIC-202809 1002 ALUMINUM < 50.000 UG/L 1000 50 09-10-2019 108 2028/09
CA4910014_021_021 INORGANIC-202809 1074 ANTIMONY, TOTAL < 6.000 UG/L 6 6 09-10-2019 108 2028/09
CA4910014_021_021 INORGANIC-202509 1005 ARSENIC < 2.000 UG/L 10 2 09-06-2022 36 2025/09
CA4910014_021_021 INORGANIC-202809 1010 BARIUM < 100.000 UG/L 1000 100 09-10-2019 108 2028/09
CA4910014_021_021 INORGANIC-202809 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 09-10-2019 108 2028/09
CA4910014_021_021 INORGANIC-202809 1015 CADMIUM < 1.000 UG/L 5 1 09-10-2019 108 2028/09
CA4910014_021_021 INORGANIC-202809 1020 CHROMIUM < 10.000 UG/L 50 10 09-10-2019 108 2028/09
CA4910014_021_021 INORGANIC-202809 1025 FLUORIDE 0.150 0.100 MG/L 2 .1 09-10-2019 108 2028/09
CA4910014_021_021 INORGANIC-202809 1035 MERCURY < 1.000 UG/L 2 1 09-10-2019 108 2028/09
CA4910014_021_021 INORGANIC-202809 1036 NICKEL < 10.000 UG/L 100 10 09-10-2019 108 2028/09
CA4910014_021_021 INORGANIC-202405 1039 PERCHLORATE < 4.000 UG/L 6 4 05-27-2021 36 2024/05 DUE NOW
CA4910014_021_021 INORGANIC-202809 1045 SELENIUM < 5.000 UG/L 50 5 09-10-2019 108 2028/09
CA4910014_021_021 INORGANIC-202809 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 09-10-2019 108 2028/09
CA4910014_021_021 NITRATE/NITRITE-202409 1040 NITRATE 0.730 0.400 MG/L 10 .4 09-12-2023 12 2024/09
CA4910014_021_021 NITRATE/NITRITE-202509 1041 NITRITE < 0.400 MG/L 1 .4 09-06-2022 36 2025/09
CA4910014_021_021 RADIOLOGICAL-202807 4109 GROSS ALPHA PARTICLE ACTIVITY 1.180 +/- 1.160 1.200 PCI/L 15 3 07-23-2019 108 2028/07
CA4910014_021_021 REGULATED VOC-202509 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2990 BENZENE < 0.500 UG/L 1 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2251 METHYL TERT-BUTYL ETHER < 3.000 UG/L 13 3 09-06-2022 36 2025/09
CA4910014_021_021 REGULATED VOC-202509 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2996 STYRENE < 0.500 UG/L 100 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2991 TOLUENE < 0.500 UG/L 150 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2218 TRICHLOROFLUOROMETHANE < 5.000 UG/L 150 5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2904 TRICHLOROTRIFLUOROETHANE < 10.000 UG/L 1200 10 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED VOC-202509 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 09-10-2019 72 2025/09
CA4910014_021_021 REGULATED SOC-202410 2414 1,2,3-TRICHLOROPROPANE < 0.005 UG/L 0.005 10-13-2021 36 2024/10
CA4910014_021_021 REGULATED SOC-203109 2110 2,4,5-TP < 1.000 UG/L 50 1 09-06-2022 108 2031/09
CA4910014_021_021 REGULATED SOC-202509 2050 ATRAZINE < 0.500 UG/L 1 .5 09-06-2022 36 2025/09
CA4910014_021_021 REGULATED SOC-202509 2031 DALAPON < 10.000 UG/L 200 10 09-06-2022 36 2025/09
CA4910014_021_021 REGULATED SOC-202509 2032 DIQUAT < 4.000 UG/L 20 4 09-06-2022 36 2025/09
CA4910014_021_021 REGULATED SOC-202509 2033 ENDOTHALL < 45.000 UG/L 100 45 09-06-2022 36 2025/09
CA4910014_021_021 REGULATED SOC-202509 2946 ETHYLENE DIBROMIDE < UG/L .05 .02 09-06-2016 108 2025/09
CA4910014_021_021 REGULATED SOC-202509 2065 HEPTACHLOR < UG/L .01 .01 09-06-2016 108 2025/09
CA4910014_021_021 REGULATED SOC-202509 2067 HEPTACHLOR EPOXIDE < UG/L .01 .01 09-06-2016 108 2025/09
CA4910014_021_021 REGULATED SOC-202509 2010 BHC-GAMMA < 0.200 UG/L .2 .2 09-06-2016 108 2025/09
CA4910014_021_021 REGULATED SOC-202509 2015 METHOXYCHLOR < 10.000 UG/L 30 10 09-06-2016 108 2025/09
CA4910014_021_021 REGULATED SOC-202509 2036 OXAMYL < 20.000 UG/L 50 20 09-06-2022 36 2025/09
CA4910014_021_021 REGULATED SOC-202509 2326 PENTACHLOROPHENOL < 0.200 UG/L 1 .2 09-06-2022 36 2025/09
CA4910014_021_021 REGULATED SOC-202509 2040 PICLORAM < 1.000 UG/L 500 1 09-06-2022 36 2025/09
CA4910014_021_021 REGULATED SOC-202509 2037 SIMAZINE < 1.000 UG/L 4 1 09-06-2022 36 2025/09
CA4910014_021_021 GENERAL NON CHAP 15-202509 1927 ALKALINITY, TOTAL 220.000 5.000 MG/L 09-06-2022 36 2025/09
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.