Date:12-15-2025STATE OF CALIFORNIA 
LAST AND NEXT SAMPLE REPORT
SYSTEM NO.:2800625SYSTEM NAME:ADVENTIST HEALTH - ST. HELENA HOSPITALCOUNTY:NAPA 
SOURCE NO.:005SOURCE NAME:COMBINED HORIZONTAL WELLSSOURCE CLASS:CLGPSTATUS: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
CA2800625_005_005 SECONDARY/GP 1928 ALKALINITY, BICARBONATE 63.000 1.000 MG/L 02-28-2024 108 2033/02
CA2800625_005_005 SECONDARY/GP 1919 CALCIUM 9.700 1.000 MG/L 06-18-2025 108 2034/06
CA2800625_005_005 SECONDARY/GP 1929 ALKALINITY, CARBONATE < 1.000 MG/L 02-28-2024 108 2033/02
CA2800625_005_005 SECONDARY/GP 1017 CHLORIDE 4.400 0.500 MG/L 500 02-28-2024 108 2033/02
CA2800625_005_005 SECONDARY/GP 1905 COLOR < 5.000 UNITS 15 05-19-2021 108 2030/05
CA2800625_005_005 SECONDARY/GP 1022 COPPER, FREE < 50.000 UG/L 1000 50 02-28-2024 36 2027/02
CA2800625_005_005 SECONDARY/GP 2905 FOAMING AGENTS (SURFACTANTS) < 0.050 MG/L .5 02-28-2024 36 2027/02
CA2800625_005_005 SECONDARY/GP 1915 HARDNESS, TOTAL (AS CACO3) 44.000 2.000 MG/L 06-18-2025 108 2034/06
CA2800625_005_005 SECONDARY/GP 1021 HYDROXIDE AS CALCIUM CARBONATE < 1.000 MG/L 02-28-2024 108 2033/02
CA2800625_005_005 SECONDARY/GP 1028 IRON < 100.000 UG/L 300 06-18-2025 108 2034/06
CA2800625_005_005 SECONDARY/GP 1031 MAGNESIUM 4.700 1.000 MG/L 06-18-2025 108 2034/06
CA2800625_005_005 SECONDARY/GP 1032 MANGANESE < 20.000 UG/L 50 02-28-2024 108 2033/02
CA2800625_005_005 SECONDARY/GP 1920 ODOR 1.000 1.000 TON 3 02-28-2024 36 2027/02
CA2800625_005_005 SECONDARY/GP 1925 PH 6.100 1.000 pH 02-28-2024 108 2033/02
CA2800625_005_005 SECONDARY/GP 1050 SILVER < 10.000 UG/L 100 02-28-2024 108 2033/02
CA2800625_005_005 SECONDARY/GP 1052 SODIUM 15.000 1.000 MG/L 02-28-2024 108 2033/02
CA2800625_005_005 SECONDARY/GP 1064 CONDUCTIVITY @ 25 C UMHOS/CM 180.000 10.000 UMHO/CM 1600 06-18-2025 36 2028/06
CA2800625_005_005 SECONDARY/GP 1055 SULFATE 3.100 0.500 MG/L 500 02-28-2024 108 2033/02
CA2800625_005_005 SECONDARY/GP 1930 TDS 190.000 10.000 MG/L 1000 06-18-2025 36 2028/06
CA2800625_005_005 SECONDARY/GP 0100 TURBIDITY 0.150 0.100 NTU 5 02-28-2024 36 2027/02
CA2800625_005_005 SECONDARY/GP 1095 ZINC < 50.000 UG/L 5000 02-28-2024 108 2033/02
CA2800625_005_005 INORGANIC 1002 ALUMINUM < 50.000 UG/L 1000 50 02-28-2024 108 2033/02
CA2800625_005_005 INORGANIC 1074 ANTIMONY, TOTAL < 6.000 UG/L 6 6 02-28-2024 108 2033/02
CA2800625_005_005 INORGANIC 1005 ARSENIC 2.000 2.000 UG/L 10 2 02-28-2024 108 2033/02
CA2800625_005_005 INORGANIC 1094 ASBESTOS < 0.200 MFL 7 .2 05-19-2021 108 2030/05
CA2800625_005_005 INORGANIC 1010 BARIUM < 100.000 UG/L 1000 100 02-28-2024 108 2033/02
CA2800625_005_005 INORGANIC 1075 BERYLLIUM, TOTAL < 1.000 UG/L 4 1 02-28-2024 108 2033/02
CA2800625_005_005 INORGANIC 1015 CADMIUM < 1.000 UG/L 5 1 02-28-2024 108 2033/02
CA2800625_005_005 INORGANIC 1020 CHROMIUM < 1.000 UG/L 50 10 02-28-2024 108 2033/02
CA2800625_005_005 INORGANIC 1080 CHROMIUM, HEX 0.320 0.050 UG/L 10 .1 03-27-2025 36 2028/03
CA2800625_005_005 INORGANIC 1025 FLUORIDE 0.100 0.100 MG/L 2 .1 02-28-2024 108 2033/02
CA2800625_005_005 INORGANIC 1035 MERCURY < 1.000 UG/L 2 1 02-28-2024 108 2033/02
CA2800625_005_005 INORGANIC 1036 NICKEL < 10.000 UG/L 100 10 02-28-2024 108 2033/02
CA2800625_005_005 INORGANIC 1039 PERCHLORATE < 2.000 UG/L 6 2 09-12-2023 36 2026/09
CA2800625_005_005 INORGANIC 1045 SELENIUM < 5.000 UG/L 50 5 02-28-2024 108 2033/02
CA2800625_005_005 INORGANIC 1085 THALLIUM, TOTAL < 1.000 UG/L 2 1 02-28-2024 108 2033/02
CA2800625_005_005 NITRATE/NITRITE 1040 NITRATE < 0.400 MG/L 10 .4 06-18-2025 12 2026/06
CA2800625_005_005 NITRATE/NITRITE 1041 NITRITE < 0.400 MG/L 1 .4 02-28-2024 36 2027/02
CA2800625_005_005 RADIOLOGICAL 4010 COMBINED RADIUM (-226 & -228) PCI/L 5 2 0 DUE NOW
CA2800625_005_005 RADIOLOGICAL 4109 GROSS ALPHA PARTICLE ACTIVITY < 1.620 PCI/L 15 3 02-28-2024 108 2033/02
CA2800625_005_005 REGULATED VOC 2981 1,1,1-TRICHLOROETHANE < 0.500 UG/L 200 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2988 1,1,2,2-TETRACHLOROETHANE < 0.500 UG/L 1 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2985 1,1,2-TRICHLOROETHANE < 0.500 UG/L 5 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2978 1,1-DICHLOROETHANE < 0.500 UG/L 5 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2977 1,1-DICHLOROETHYLENE < 0.500 UG/L 6 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2378 1,2,4-TRICHLOROBENZENE < 0.500 UG/L 5 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2968 O-DICHLOROBENZENE < 0.500 UG/L 600 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2980 1,2-DICHLOROETHANE < 0.500 UG/L .5 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2983 1,2-DICHLOROPROPANE < 0.500 UG/L 5 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2413 1,3-DICHLOROPROPENE < 0.500 UG/L .5 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2969 P-DICHLOROBENZENE < 0.500 UG/L 5 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2990 BENZENE < 0.500 UG/L 1 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2982 CARBON TETRACHLORIDE < 0.500 UG/L .5 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2380 CIS-1,2-DICHLOROETHYLENE < 0.500 UG/L 6 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2964 DICHLOROMETHANE < 0.500 UG/L 5 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2992 ETHYLBENZENE < 0.500 UG/L 300 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2251 METHYL TERT-BUTYL ETHER < 3.000 UG/L 13 3 02-28-2024 36 2027/02
CA2800625_005_005 REGULATED VOC 2989 CHLOROBENZENE < 0.500 UG/L 70 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2996 STYRENE < 0.500 UG/L 100 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2987 TETRACHLOROETHYLENE < 0.500 UG/L 5 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2991 TOLUENE < 0.500 UG/L 150 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2979 TRANS-1,2-DICHLOROETHYLENE < 0.500 UG/L 10 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2984 TRICHLOROETHYLENE < 0.500 UG/L 5 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2218 TRICHLOROFLUOROMETHANE < 5.000 UG/L 150 5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2904 TRICHLOROTRIFLUOROETHANE < 10.000 UG/L 1200 10 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2976 VINYL CHLORIDE < 0.500 UG/L .5 .5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED VOC 2955 XYLENES, TOTAL < 0.500 UG/L 1750 0.5 02-28-2024 72 2030/02
CA2800625_005_005 REGULATED SOC 2063 2,3,7,8-TCDD < 0.005 NG/L 0.03 0.005 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2110 2,4,5-TP < 1.000 UG/L 50 1 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2105 2,4-D < 10.000 UG/L 70 10 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2051 LASSO (ALACHLOR) < 1.000 UG/L 2 1 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2050 ATRAZINE < 0.500 UG/L 1 .5 10-10-2025 36 2028/10
CA2800625_005_005 REGULATED SOC 2625 BENTAZON < 2.000 UG/L 18 2 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2306 BENZO(A)PYRENE < 0.100 UG/L .2 .1 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2046 CARBOFURAN < 5.000 UG/L 18 5 11-19-2025 108 2034/11
CA2800625_005_005 REGULATED SOC 2959 CHLORDANE < 0.096 UG/L .1 .1 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2031 DALAPON < 10.000 UG/L 200 10 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2035 DI(2-ETHYLHEXYL) ADIPATE < 5.000 UG/L 400 5 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2039 DI(2-ETHYLHEXYL) PHTHALATE < 3.000 UG/L 4 3 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2931 1,2-DIBROMO-3-CHLOROPROPANE < 0.010 UG/L .2 .01 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2041 DINOSEB < 2.000 UG/L 7 2 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2032 DIQUAT < 0.400 UG/L 20 4 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2033 ENDOTHALL < 45.000 UG/L 100 45 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2005 ENDRIN < 0.005 UG/L 2 .1 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2946 ETHYLENE DIBROMIDE < 0.020 UG/L .05 .02 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2034 GLYPHOSATE < 5.000 UG/L 700 25 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2065 HEPTACHLOR < 0.005 UG/L .01 .01 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2067 HEPTACHLOR EPOXIDE < 0.005 UG/L .01 .01 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2274 HEXACHLOROBENZENE UG/L 1 .5 0 DUE NOW
CA2800625_005_005 REGULATED SOC 2042 HEXACHLOROCYCLOPENTADIENE UG/L 50 1 0 DUE NOW
CA2800625_005_005 REGULATED SOC 2010 BHC-GAMMA < 0.005 UG/L .2 .2 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2015 METHOXYCHLOR < 0.005 UG/L 30 10 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2626 MOLINATE < 2.000 UG/L 20 2 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2036 OXAMYL < 5.000 UG/L 50 20 11-19-2025 108 2034/11
CA2800625_005_005 REGULATED SOC 2326 PENTACHLOROPHENOL < 0.200 UG/L 1 .2 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2040 PICLORAM < 1.000 UG/L 500 1 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2383 TOTAL POLYCHLORINATED BIPHENYLS (PCB) < 0.096 UG/L .5 .5 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2037 SIMAZINE < 1.000 UG/L 4 1 10-10-2025 36 2028/10
CA2800625_005_005 REGULATED SOC 2727 THIOBENCARB (BOLERO) < 1.000 UG/L 70 1 10-10-2025 108 2034/10
CA2800625_005_005 REGULATED SOC 2020 TOXAPHENE < 0.240 UG/L 3 1 10-10-2025 108 2034/10
CA2800625_005_005 GENERAL NON CHAP 15 1927 ALKALINITY, TOTAL 52.000 20.000 MG/L 02-28-2024 36 2027/02
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.