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EF/ ICR Logo Summary Report for CITY OF LOS ANGELES



[ Quarterly DBP ] [ Monthly DBP ] [ Monthly Microbials ]

Water Systems and Water Treatment Plants: A water system may consist of more than one treatment plant. Therefore, you may see data from more than one treatment plant in your water system report.


Sampled Quarterly - DISINFECTION BYPRODUCT (Treated Water)

Los Angeles Aqueduct Filtration Plant - 163

Quarter Total Trihalomethanes(ppb) Haloacetic Acids 5(ppb)
JUL 1997 - SEP 1997
 26.6
 NO DATA
OCT 1997 - DEC 1997
 34.5
 NO DATA
JAN 1998 - MAR 1998
 26.1
 NO DATA
APR 1998 - JUN 1998
 41.2
 16.2
JUL 1998 - SEP 1998
 27
 16
OCT 1998 - DEC 1998
 23.9
 14.5

Eagle Rock Reservoir(LA-17) - 164

Quarter Total Trihalomethanes(ppb) Haloacetic Acids 5(ppb)
JUL 1997 - SEP 1997
 118.6
 NO DATA
OCT 1997 - DEC 1997
 100.3
 NO DATA
JAN 1998 - MAR 1998
 65.4
 NO DATA
APR 1998 - JUN 1998
 51.7
 18.7
JUL 1998 - SEP 1998
 75.1
 26.7
OCT 1998 - DEC 1998
 42.7
 15.9

Lower Stone Canyon Reservoir - 166

Quarter Total Trihalomethanes(ppb) Haloacetic Acids 5(ppb)
JUL 1997 - SEP 1997
 29.7
 NO DATA
OCT 1997 - DEC 1997
 28.6
 NO DATA
JAN 1998 - MAR 1998
 24.9
 NO DATA
APR 1998 - JUN 1998
 61.5
 30.4
JUL 1998 - SEP 1998
 64.2
 16.7
OCT 1998 - DEC 1998
 32.1
 17

River Supply Conduit - 738

Quarter Total Trihalomethanes(ppb) Haloacetic Acids 5(ppb)
JUL 1997 - SEP 1997
 12.8
 NO DATA
OCT 1997 - DEC 1997
 17.9
 NO DATA
JAN 1998 - MAR 1998
 15.3
 NO DATA
APR 1998 - JUN 1998
 57.1
 25.3
JUL 1998 - SEP 1998
 33.3
 13.5
OCT 1998 - DEC 1998
 31.3
 16.1

Upper Hollywood Reservoir - 739

Quarter Total Trihalomethanes(ppb) Haloacetic Acids 5(ppb)
JUL 1997 - SEP 1997
 75.2
 NO DATA
OCT 1997 - DEC 1997
 49.2
 NO DATA
JAN 1998 - MAR 1998
 28.8
 NO DATA
APR 1998 - JUN 1998
 54.8
 21.9
JUL 1998 - SEP 1998
 62.4
 NO DATA
OCT 1998 - DEC 1998
 34.3
 20.9

Detailed water system reports are available for: Total Trihalomethanes and Haloacetic Acids 5.


Sampled Monthly - DISINFECTION BYPRODUCT (Treated Water)

Los Angeles Aqueduct Filtration Plant - 163

Month Bromate(ppb) Chlorite(ppm)
JUL 1997
 0
 NO DATA
AUG 1997
 0
 NO DATA
SEP 1997
 0
 NO DATA
OCT 1997
 10.4
 NO DATA
NOV 1997
 8.9
 NO DATA
DEC 1997
 NO DATA NO DATA
JAN 1998
 NO DATA NO DATA
FEB 1998
 3.6
 NO DATA
MAR 1998
 2.1
 NO DATA
APR 1998
 1.7
 NO DATA
MAY 1998
 2.2
 NO DATA
JUN 1998
 1.8
 NO DATA
JUL 1998
 1.5
 NO DATA
AUG 1998
 1.5
 NO DATA
SEP 1998
 1.4
 NO DATA
OCT 1998
 2
 NO DATA
NOV 1998
 1.3
 NO DATA
DEC 1998
 1.5
 NO DATA

Detailed water system reports are available for: Bromate and Chlorite


Sampled Monthly - MICROBIALS (Source Water)

Los Angeles Aqueduct Filtration Plant - 163

Month Cryptosporidium
(#oocysts/100L)		 Giardia
(#cysts/100L)		 Virus
(MPN/100L)		 Total Coliform
(Total Coliforms/100mL)		 Fecal Coliform
(Fecal Coliforms/100mL)		 E. coli
(E. coli/100mL)
JUL 1997
 0
 0
 1
 8310
 NO DATA
AUG 1997
 0
 50
 0
 3840
 NO DATA
SEP 1997
 0
 0
 0
 2419
 NO DATA
OCT 1997
 0
 0
 0
 461
 NO DATA
NOV 1997
 0
 0
 0
 1413
 NO DATA
DEC 1997
 0
 0
 0
 105
 NO DATA
JAN 1998
 0
 0
 0
 27
 NO DATA
FEB 1998
 0
 0
 3.2
 90
 NO DATA
MAR 1998
 0
 0
 1
 0
 NO DATA
APR 1998
 0
 0
 0
 40
 NO DATA
MAY 1998
 0
 0
 0
 85
 NO DATA
JUN 1998
 0
 0
 1
 1553
 NO DATA
JUL 1998
 0
 0
 1
 920
 NO DATA
AUG 1998
 0
 0
 1
 7701
 0
SEP 1998
 0
 0
 0
 151
 0
OCT 1998
 0
 0
 0
 365
 1
NOV 1998
 0
 0
 0
 167
 1
DEC 1998
 0
 0
 0
 26
 1

Eagle Rock Reservoir(LA-17) - 164

Month Cryptosporidium
(#oocysts/100L)		 Giardia
(#cysts/100L)		 Virus
(MPN/100L)		 Total Coliform
(Total Coliforms/100mL)		 Fecal Coliform
(Fecal Coliforms/100mL)		 E. coli
(E. coli/100mL)
JUL 1997
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
AUG 1997
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
SEP 1997
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
OCT 1997
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
NOV 1997
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
DEC 1997
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
JAN 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
FEB 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
MAR 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
APR 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
MAY 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
JUN 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
JUL 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
AUG 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
SEP 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
OCT 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
NOV 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
DEC 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA

Lower Stone Canyon Reservoir - 166

Month Cryptosporidium
(#oocysts/100L)		 Giardia
(#cysts/100L)		 Virus
(MPN/100L)		 Total Coliform
(Total Coliforms/100mL)		 Fecal Coliform
(Fecal Coliforms/100mL)		 E. coli
(E. coli/100mL)
JUL 1997
 0
 0
 NO DATA
 2
 NO DATA
AUG 1997
 0
 0
 NO DATA
 0
 NO DATA
SEP 1997
 0
 0
 NO DATA
 0
 NO DATA
OCT 1997
 0
 0
 NO DATA
 0
 NO DATA
NOV 1997
 0
 0
 NO DATA
 0
 NO DATA
DEC 1997
 0
 0
 NO DATA
 0
 NO DATA
JAN 1998
 0
 0
 NO DATA
 0
 NO DATA
FEB 1998
 0
 0
 NO DATA
 0
 NO DATA
MAR 1998
 0
 0
 NO DATA
 0
 NO DATA
APR 1998
 0
 0
 NO DATA
 0
 NO DATA
MAY 1998
 0
 0
 NO DATA
 0
 NO DATA
JUN 1998
 0
 0
 NO DATA
 0
 NO DATA
JUL 1998
 0
 0
 NO DATA
 0
 NO DATA
AUG 1998
 0
 0
 NO DATA
 0
 NO DATA
SEP 1998
 0
 0
 NO DATA
 2
 0
OCT 1998
 0
 0
 NO DATA
 0
 NO DATA
NOV 1998
 0
 0
 NO DATA
 0
 NO DATA
DEC 1998
 0
 0
 NO DATA
 0
 NO DATA

River Supply Conduit - 738

Month Cryptosporidium
(#oocysts/100L)		 Giardia
(#cysts/100L)		 Virus
(MPN/100L)		 Total Coliform
(Total Coliforms/100mL)		 Fecal Coliform
(Fecal Coliforms/100mL)		 E. coli
(E. coli/100mL)
JUL 1997
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
AUG 1997
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
SEP 1997
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
OCT 1997
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
NOV 1997
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
DEC 1997
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
JAN 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
FEB 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
MAR 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
APR 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
MAY 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
JUN 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
JUL 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
AUG 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
SEP 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
OCT 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
NOV 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
DEC 1998
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA
 NO DATA

Upper Hollywood Reservoir - 739

Month Cryptosporidium
(#oocysts/100L)		 Giardia
(#cysts/100L)		 Virus
(MPN/100L)		 Total Coliform
(Total Coliforms/100mL)		 Fecal Coliform
(Fecal Coliforms/100mL)		 E. coli
(E. coli/100mL)
JUL 1997
 0
 0
 NO DATA
 0
 NO DATA
AUG 1997
 0
 76
 NO DATA
 0
 NO DATA
SEP 1997
 0
 0
 NO DATA
 0
 NO DATA
OCT 1997
 0
 0
 NO DATA
 0
 NO DATA
NOV 1997
 0
 0
 NO DATA
 0
 NO DATA
DEC 1997
 0
 0
 NO DATA
 0
 NO DATA
JAN 1998
 0
 0
 NO DATA
 0
 NO DATA
FEB 1998
 0
 0
 NO DATA
 0
 NO DATA
MAR 1998
 0
 0
 NO DATA
 0
 NO DATA
APR 1998
 0
 0
 NO DATA
 0
 NO DATA
MAY 1998
 0
 0
 NO DATA
 0
 NO DATA
JUN 1998
 0
 0
 NO DATA
 0
 NO DATA
JUL 1998
 0
 0
 NO DATA
 0
 NO DATA
AUG 1998
 0
 0
 NO DATA
 1
 0
SEP 1998
 0
 0
 NO DATA
 0
 NO DATA
OCT 1998
 0
 0
 NO DATA
 0
 NO DATA
NOV 1998
 0
 0
 NO DATA
 0
 NO DATA
DEC 1998
 0
 0
 NO DATA
 0
 NO DATA

Detailed water system reports are available for: Cryptosporidium, Giardia, Virus, Total Coliform, Fecal Coliform, and E. coli

You can click on column titles to obtain more information about the subject. You can click on the "NO DATA" to find out why data is missing. "0" value does not mean that the value was missing. Missing values are indicated by a "NO DATA" label. For microbial results, "0" indicates that a sample was analyzed, but that no microbes were found. For DBP results, "0" may indicate that a sample was analyzed, but that the result was less than the lowest value that the analytical method can reliably report.

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