CA Drinking Water Watch

METROPOLITAN WATER DIST. OF SO. CAL. (1910087)

All Sampling Results From To

LAKE MATHEWS OUTLET TOWER NO. 2 (CA1910087_032_032)

Click to hide / show columns: Analyte Number | Analyte Name | Sampling Date | Detected Level | Less Than | RL | Counting Error (+/-) | MCL | DLR | Unit | Lab Sample ID | Lab | ELAP | Method |

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Analyte Number Analyte Name Sampling Date Results Counting Error (+/-) MCL DLR Unit Lab Sample ID Lab ELAP Method
Detected Level Less Than RL
Analyte Number Analyte Name Sampling Date Detected Level Less Than RL Counting Error (+/-) MCL DLR Unit Lab Sample ID Lab ELAP Method
2991 TOLUENE 07-06-2026 < 0.5 150 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2990 BENZENE 07-06-2026 < 0.5 1 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2989 CHLOROBENZENE 07-06-2026 < 0.5 70 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2988 1,1,2,2-TETRACHLOROETHANE 07-06-2026 < 0.5 1 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2987 TETRACHLOROETHYLENE 07-06-2026 < 0.5 5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2986 1,1,1,2-TETRACHLOROETHANE 07-06-2026 < 0.5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
C034 TERT-AMYL-METHYL ETHER 07-06-2026 < 3 3 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2985 1,1,2-TRICHLOROETHANE 07-06-2026 < 0.5 5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2984 TRICHLOROETHYLENE 07-06-2026 < 0.5 5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
C033 ETHYL-TERT-BUTYL ETHER 07-06-2026 < 3 3 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
8404 TERTIARY BUTYL ALCOHOL (TBA) 07-06-2026 < 2 2 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2983 1,2-DICHLOROPROPANE 07-06-2026 < 0.5 5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2982 CARBON TETRACHLORIDE 07-06-2026 < 0.5 .5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2998 N-PROPYLBENZENE 07-06-2026 < 0.5 0.5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2997 O-XYLENE 07-06-2026 < 0.5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2981 1,1,1-TRICHLOROETHANE 07-06-2026 < 0.5 200 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2980 1,2-DICHLOROETHANE 07-06-2026 < 0.5 .5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2996 STYRENE 07-06-2026 < 0.5 100 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2994 ISOPROPYLBENZENE 07-06-2026 < 0.5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2979 TRANS-1,2-DICHLOROETHYLENE 07-06-2026 < 0.5 10 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2978 1,1-DICHLOROETHANE 07-06-2026 < 0.5 5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2993 BROMOBENZENE 07-06-2026 < 0.5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2992 ETHYLBENZENE 07-06-2026 < 0.5 300 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2977 1,1-DICHLOROETHYLENE 07-06-2026 < 0.5 6 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2976 VINYL CHLORIDE 07-06-2026 < 0.5 .5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2030 P-ISOPROPYLTOLUENE 07-06-2026 < 0.5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
1902 CARBON DISULFIDE 07-06-2026 < 0.5 0.5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2969 P-DICHLOROBENZENE 07-06-2026 < 0.5 5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2968 O-DICHLOROBENZENE 07-06-2026 < 0.5 600 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2967 M-DICHLOROBENZENE 07-06-2026 < 0.5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2966 P-CHLOROTOLUENE 07-06-2026 < 0.5 0.5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2965 O-CHLOROTOLUENE 07-06-2026 < 0.5 0.5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2964 DICHLOROMETHANE 07-06-2026 < 0.5 5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2963 XYLENE, META AND PARA 07-06-2026 < 0.5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2955 XYLENES, TOTAL 07-06-2026 < 0.5 1750 0.5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2904 TRICHLOROTRIFLUOROETHANE 07-06-2026 < 10 1200 10 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2430 BROMOCHLOROMETHANE 07-06-2026 < 0.5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2428 SEC-BUTYLBENZENE 07-06-2026 < 0.5 0.5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2426 TERT-BUTYLBENZENE 07-06-2026 < 0.5 0.5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2424 1,3,5-TRIMETHYLBENZENE 07-06-2026 < 0.5 0.5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2422 N-BUTYLBENZENE 07-06-2026 < 0.5 0.5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2420 1,2,3-TRICHLOROBENZENE 07-06-2026 < 0.5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2418 1,2,4-TRIMETHYLBENZENE 07-06-2026 < 0.5 0.5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2413 1,3-DICHLOROPROPENE 07-06-2026 < 0.5 .5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2412 1,3-DICHLOROPROPANE 07-06-2026 < 0.5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2410 1,1-DICHLOROPROPENE 07-06-2026 < 0.5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2408 DIBROMOMETHANE 07-06-2026 < 0.5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2380 CIS-1,2-DICHLOROETHYLENE 07-06-2026 < 0.5 6 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2378 1,2,4-TRICHLOROBENZENE 07-06-2026 < 0.5 5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2277 4-METHYL-2-PENTANONE 07-06-2026 < 5 5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2251 METHYL TERT-BUTYL ETHER 07-06-2026 < 3 13 3 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2248 NAPHTHALENE 07-06-2026 < 0.5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2247 METHYL ETHYL KETONE 07-06-2026 < 5 5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2246 HEXACHLOROBUTADIENE 07-06-2026 < 0.5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2245 ISOPROPYL ETHER 07-06-2026 < 3 3 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2218 TRICHLOROFLUOROMETHANE 07-06-2026 < 5 150 5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2214 BROMOMETHANE 07-06-2026 < 0.5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2212 DICHLORODIFLUOROMETHANE 07-06-2026 < 0.5 0.5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
2210 CHLOROMETHANE 07-06-2026 < 0.5 .5 UG/L 2026-02676-15 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 524.3
1080 CHROMIUM, HEX 04-06-2026 < 0.03 10 .1 UG/L 2026-01181-01 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 218.7
1905 COLOR 04-06-2026 5 1 15 UNITS 2026-01181-02 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 SM 2120 B
1052 SODIUM 04-06-2026 96 1.5 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.7
1049 SILICA 04-06-2026 9.3 0.1 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.7
1042 POTASSIUM 04-06-2026 5.1 0.5 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.7
1031 MAGNESIUM 04-06-2026 26 0.5 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.7
1025 FLUORIDE 04-06-2026 0.3 0.1 2 .1 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 300.0
1021 HYDROXIDE AS CALCIUM CARBONATE 04-06-2026 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 SM 2320 B
1017 CHLORIDE 04-06-2026 102 2 500 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 300.0
1004 BROMIDE 04-06-2026 0.08 0.02 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 300.0
0100 TURBIDITY 04-06-2026 1.5 0.1 5 NTU 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 SM 2130 B-01
1996 TEMPERATURE (CENTIGRADE) 04-06-2026 20 C 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 SM 2550 B
1994 AGGRESSIVE INDEX 04-06-2026 12.4 AGGR 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 CALC
1930 TDS 04-06-2026 616 2.5 1000 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 SM 2540 C
1929 ALKALINITY, CARBONATE 04-06-2026 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 SM 2320 B
1928 ALKALINITY, BICARBONATE 04-06-2026 155 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 SM 2320 B
1927 ALKALINITY, TOTAL 04-06-2026 127 1 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 SM 2320 B
1925 PH 04-06-2026 8.02 pH 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 SM 4500-H+B
1919 CALCIUM 04-06-2026 69 1 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.7
1915 HARDNESS, TOTAL (AS CACO3) 04-06-2026 279 1 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 SM 2340 C
1064 CONDUCTIVITY @ 25 C UMHOS/CM 04-06-2026 986 1600 UMHO/CM 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 SM 2510 B
1055 SULFATE 04-06-2026 216 0.5 500 MG/L 2026-01181-03 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 300.0
1035 MERCURY 04-06-2026 < 1 2 1 UG/L 2026-01181-09 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1041 NITRITE 04-06-2026 < 0.4 1 .4 MG/L 2026-01181-10 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 SM 4500-NO2-B-00
1040 NITRATE 04-06-2026 < 0.4 10 .4 MG/L 2026-01181-10 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 300.0
1038 NITRATE-NITRITE 04-06-2026 < 0.4 10 .4 MG/L 2026-01181-10 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 300.0
1039 PERCHLORATE 04-06-2026 < 1 6 1 UG/L 2026-01181-11 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 332.0
2920 CARBON, TOTAL 04-06-2026 3.48 0.3 MG/L 2026-01181-16 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 SM 5310 C
1920 ODOR 04-06-2026 10 1 3 TON 2026-01181-17 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 SM 2150 B
1074 ANTIMONY, TOTAL 04-06-2026 < 6 6 6 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1050 SILVER 04-06-2026 < 10 100 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1045 SELENIUM 04-06-2026 < 5 50 5 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1036 NICKEL 04-06-2026 < 10 100 10 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1032 MANGANESE 04-06-2026 < 20 50 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1030 LEAD 04-06-2026 < 5 5 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1028 IRON 04-06-2026 155 100 300 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.7
1022 COPPER, FREE 04-06-2026 < 50 1000 50 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1020 CHROMIUM 04-06-2026 < 10 50 10 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1015 CADMIUM 04-06-2026 < 1 5 1 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1010 BARIUM 04-06-2026 121 100 1000 100 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1005 ARSENIC 04-06-2026 2.1 2 10 2 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1002 ALUMINUM 04-06-2026 54 50 1000 50 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1095 ZINC 04-06-2026 < 50 5000 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1088 VANADIUM, TOTAL 04-06-2026 < 3 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1085 THALLIUM, TOTAL 04-06-2026 < 1 2 1 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1079 BORON, TOTAL 04-06-2026 120 100 100 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
1075 BERYLLIUM, TOTAL 04-06-2026 < 1 4 1 UG/L 2026-01181-18 METROPOLITAN WD OF SO CAL (LA VERNE, CA) 1618 EPA 200.8
2905 FOAMING AGENTS (SURFACTANTS) 04-02-2012 < .5 MG/L 25560321204021245G WECK LABORATORIES 1132
1024 CYANIDE 04-02-2012 < 100 150 100 UG/L 25560321204021245I WECK LABORATORIES 1132
1039 PERCHLORATE 04-02-2012 < 4 6 4 UG/L 25560321204021245I WECK LABORATORIES 1132

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.