Date:05-12-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:3810001SYSTEM NAME:SAN FRANCISCO REGIONAL WATER SYSTEMCOUNTY:SAN FRANCISCO 
SOURCE NO.:033SOURCE NAME:COLMA BOULEVARD WELLSOURCE CLASS:CLGSSTATUS: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
CA3810001_033_033 SECONDARY/GP-202307 1928 ALKALINITY, BICARBONATE 175.000 MG/L 07-08-2020 36 2023/07 DUE NOW
CA3810001_033_033 SECONDARY/GP-202307 1919 CALCIUM 40.800 MG/L 07-08-2020 36 2023/07 DUE NOW
CA3810001_033_033 SECONDARY/GP-202307 1929 ALKALINITY, CARBONATE < 3.000 MG/L 07-08-2020 36 2023/07 DUE NOW
CA3810001_033_033 SECONDARY/GP-202506 1017 CHLORIDE 82.700 3.000 MG/L 500 06-07-2022 36 2025/06
CA3810001_033_033 SECONDARY/GP-202307 1905 COLOR < 5.000 UNITS 15 07-08-2020 36 2023/07 DUE NOW
CA3810001_033_033 SECONDARY/GP-202506 1022 COPPER, FREE < 50.000 UG/L 1000 50 06-07-2022 36 2025/06
CA3810001_033_033 SECONDARY/GP-202508 2905 FOAMING AGENTS (SURFACTANTS) < 0.100 MG/L .5 08-10-2022 36 2025/08
CA3810001_033_033 SECONDARY/GP-202307 1915 HARDNESS, TOTAL (AS CACO3) 257.000 MG/L 07-08-2020 36 2023/07 DUE NOW
CA3810001_033_033 SECONDARY/GP-202307 1021 HYDROXIDE AS CALCIUM CARBONATE < 3.000 MG/L 07-08-2020 36 2023/07 DUE NOW
CA3810001_033_033 SECONDARY/GP-202506 1028 IRON < 100.000 UG/L 300 100 06-07-2022 36 2025/06
CA3810001_033_033 SECONDARY/GP-202307 1031 MAGNESIUM 36.300 MG/L 07-08-2020 36 2023/07 DUE NOW
CA3810001_033_033 SECONDARY/GP-202506 1032 MANGANESE 20.600 20.000 UG/L 50 20 06-07-2022 36 2025/06
CA3810001_033_033 SECONDARY/GP-202506 1920 ODOR < 1.000 TON 3 1 06-07-2022 36 2025/06
CA3810001_033_033 SECONDARY/GP-202307 1925 PH 7.830 pH 07-08-2020 36 2023/07 DUE NOW
CA3810001_033_033 SECONDARY/GP-202506 1050 SILVER < 10.000 UG/L 100 10 06-07-2022 36 2025/06
CA3810001_033_033 SECONDARY/GP-202307 1052 SODIUM 49.300 MG/L 07-08-2020 36 2023/07 DUE NOW
CA3810001_033_033 SECONDARY/GP-202506 1064 CONDUCTIVITY @ 25 C UMHOS/CM 714.000 1.000 UMHO/CM 1600 06-07-2022 36 2025/06
CA3810001_033_033 SECONDARY/GP-202506 1055 SULFATE 30.500 0.500 MG/L 500 .5 06-07-2022 36 2025/06
CA3810001_033_033 SECONDARY/GP-202506 1930 TDS 405.000 20.000 MG/L 1000 06-07-2022 36 2025/06
CA3810001_033_033 SECONDARY/GP-202506 0100 TURBIDITY < 0.050 NTU 5 .1 06-07-2022 36 2025/06
CA3810001_033_033 SECONDARY/GP-202506 1095 ZINC < 50.000 UG/L 5000 50 06-07-2022 36 2025/06
CA3810001_033_033 INORGANIC-202506 1002 ALUMINUM < 50.000 UG/L 1000 50 06-07-2022 36 2025/06
CA3810001_033_033 INORGANIC-202506 1074 ANTIMONY, TOTAL < 6.000 UG/L 6 6 06-07-2022 36 2025/06
CA3810001_033_033 INORGANIC-202506 1005 ARSENIC < 2.000 UG/L 10 2 06-07-2022 36 2025/06
CA3810001_033_033 INORGANIC-202506 1010 BARIUM < 100.000 UG/L 1000 100 06-07-2022 36 2025/06
CA3810001_033_033 INORGANIC-202506 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 06-07-2022 36 2025/06
CA3810001_033_033 INORGANIC-202506 1015 CADMIUM < 1.000 UG/L 5 1 06-07-2022 36 2025/06
CA3810001_033_033 INORGANIC-202506 1020 CHROMIUM 18.800 10.000 UG/L 50 10 06-07-2022 36 2025/06
CA3810001_033_033 INORGANIC-202506 1025 FLUORIDE < 0.100 MG/L 2 .1 06-07-2022 36 2025/06
CA3810001_033_033 INORGANIC-202506 1035 MERCURY < 1.000 UG/L 2 1 06-07-2022 36 2025/06
CA3810001_033_033 INORGANIC-202506 1036 NICKEL < 10.000 UG/L 100 10 06-07-2022 36 2025/06
CA3810001_033_033 INORGANIC-202506 1045 SELENIUM < 5.000 UG/L 50 5 06-07-2022 36 2025/06
CA3810001_033_033 INORGANIC-202506 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 06-07-2022 36 2025/06
CA3810001_033_033 NITRATE/NITRITE-202307 1040 NITRATE 7.320 0.400 MG/L 10 .4 07-06-2022 12 2023/07 DUE NOW
CA3810001_033_033 NITRATE/NITRITE-202506 1041 NITRITE < 0.400 MG/L 1 .4 06-07-2022 36 2025/06
CA3810001_033_033 RADIOLOGICAL-202607 4109 GROSS ALPHA PARTICLE ACTIVITY < 0.216 PCI/L 15 3 07-06-2022 48 2026/07
CA3810001_033_033 REGULATED VOC-202506 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2990 BENZENE < 0.500 UG/L 1 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2251 METHYL TERT-BUTYL ETHER < 3.000 UG/L 13 3 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2996 STYRENE < 0.500 UG/L 100 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2991 TOLUENE < 0.500 UG/L 150 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2218 TRICHLOROFLUOROMETHANE < 5.000 UG/L 150 5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2904 TRICHLOROTRIFLUOROETHANE < 10.000 UG/L 1200 10 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED VOC-202506 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 06-07-2022 36 2025/06
CA3810001_033_033 REGULATED SOC-202404 2414 1,2,3-TRICHLOROPROPANE < UG/L 0.005 04-07-2021 36 2024/04 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.