Date:05-19-2024STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:4000670SYSTEM NAME:WALNUT HILLS MUTUAL WATER COCOUNTY:SAN LUIS OBISPO 
SOURCE NO.:010SOURCE NAME:WELL 04SOURCE CLASS:L100STATUS: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
CA4000670_010_010 SECONDARY/GP-202609 1928 ALKALINITY, BICARBONATE 280.000 3.000 MG/L 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1919 CALCIUM 140.000 0.100 MG/L 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1929 ALKALINITY, CARBONATE < 3.000 MG/L 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1017 CHLORIDE 85.000 1.000 MG/L 500 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1905 COLOR < 5.000 UNITS 15 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1022 COPPER, FREE < 50.000 UG/L 1000 50 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 2905 FOAMING AGENTS (SURFACTANTS) < 0.050 MG/L .5 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1915 HARDNESS, TOTAL (AS CACO3) 580.000 0.410 MG/L 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1021 HYDROXIDE AS CALCIUM CARBONATE < 3.000 MG/L 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1028 IRON < 30.000 UG/L 300 100 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1031 MAGNESIUM 55.000 0.100 MG/L 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1032 MANGANESE < 10.000 UG/L 50 20 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1920 ODOR < 1.000 TON 3 1 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1925 PH 7.500 pH 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1050 SILVER < 10.000 UG/L 100 10 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1052 SODIUM 53.000 1.000 MG/L 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1064 CONDUCTIVITY @ 25 C UMHOS/CM 1100.000 1.000 UMHO/CM 1600 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1055 SULFATE 200.000 1.000 MG/L 500 .5 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1930 TDS 920.000 5.000 MG/L 1000 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 0100 TURBIDITY 0.460 0.100 NTU 5 .1 09-05-2023 36 2026/09
CA4000670_010_010 SECONDARY/GP-202609 1095 ZINC < 50.000 UG/L 5000 50 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1002 ALUMINUM < 50.000 UG/L 1000 50 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1074 ANTIMONY, TOTAL < 2.000 UG/L 6 6 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1005 ARSENIC 3.500 2.000 UG/L 10 2 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1010 BARIUM 95.000 50.000 UG/L 1000 100 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1015 CADMIUM < 1.000 UG/L 5 1 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1020 CHROMIUM < 10.000 UG/L 50 10 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1024 CYANIDE < 5.000 UG/L 150 100 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1025 FLUORIDE 0.280 0.100 MG/L 2 .1 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1030 LEAD < 1.000 UG/L 5 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1035 MERCURY < 0.200 UG/L 2 1 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1036 NICKEL < 10.000 UG/L 100 10 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1039 PERCHLORATE < 0.500 UG/L 6 2 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1045 SELENIUM 13.000 2.000 UG/L 50 5 09-05-2023 36 2026/09
CA4000670_010_010 INORGANIC-202609 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 09-05-2023 36 2026/09
CA4000670_010_010 NITRATE/NITRITE-202409 1040 NITRATE < 0.230 MG/L 10 .4 09-05-2023 12 2024/09
CA4000670_010_010 NITRATE/NITRITE-202609 1038 NITRATE-NITRITE < 0.230 MG/L 10 .4 09-05-2023 36 2026/09
CA4000670_010_010 NITRATE/NITRITE-202609 1041 NITRITE < 0.050 MG/L 1 .4 09-05-2023 36 2026/09
CA4000670_010_010 RADIOLOGICAL-203209 4109 GROSS ALPHA PARTICLE ACTIVITY 4.030 +/- 0.994 0.226 PCI/L 15 3 09-05-2023 108 2032/09
CA4000670_010_010 REGULATED VOC-202909 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2990 BENZENE < 0.500 UG/L 1 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2251 METHYL TERT-BUTYL ETHER < 0.500 UG/L 13 3 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2996 STYRENE < 0.500 UG/L 100 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2991 TOLUENE < 0.500 UG/L 150 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2218 TRICHLOROFLUOROMETHANE < 5.000 UG/L 150 5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2904 TRICHLOROTRIFLUOROETHANE < 10.000 UG/L 1200 10 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED VOC-202909 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 09-12-2023 72 2029/09
CA4000670_010_010 REGULATED SOC-202412 2414 1,2,3-TRICHLOROPROPANE < 0.005 UG/L 0.005 12-02-2021 36 2024/12
CA4000670_010_010 REGULATED SOC-202704 2050 ATRAZINE < 0.500 UG/L 1 .5 04-16-2018 108 2027/04
CA4000670_010_010 REGULATED SOC-202704 2037 SIMAZINE < 1.000 UG/L 4 1 04-16-2018 108 2027/04
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.