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EF/ ICR Logo Summary Report for Contra Costa Water District



[ 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)

Bollman Water Treatment Plant - 146

Quarter Total Trihalomethanes(ppb) Haloacetic Acids 5(ppb)
JUL 1997 - SEP 1997
 NO DATA
4
OCT 1997 - DEC 1997
 39.1
 6.3
JAN 1998 - MAR 1998
 45.9
 6.4
APR 1998 - JUN 1998
 41.5
 7.4
JUL 1998 - SEP 1998
 18.4
 7
OCT 1998 - DEC 1998
 11.8
 2.3

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


Sampled Monthly - DISINFECTION BYPRODUCT (Treated Water)

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


Sampled Monthly - DISINFECTION BYPRODUCT (Treated Water)

NO DATA - Click here to find out why.

Detailed water system reports are available for: Bromate and Chlorite


Sampled Monthly - MICROBIALS (Source Water)

Bollman Water Treatment Plant - 146

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
 0
 40
 6
AUG 1997
 0
 0
 0
 40
 5
SEP 1997
 0
 0
 0
 30
 8
 NO DATA
OCT 1997
 0
 0
 0
 30
 0
 NO DATA
NOV 1997
 0
 0
 0
 800
 11
 NO DATA
DEC 1997
 0
 0
 0
 20
 12
 NO DATA
JAN 1998
 0
 18.9
 2.1
 70
 7
 NO DATA
FEB 1998
 0
 0
 0
 3600
 818
 NO DATA
MAR 1998
 0
 0
 0
 60
 2
 NO DATA
APR 1998
 0
 0
 0
 6
 5
 NO DATA
MAY 1998
 NO DATA
 NO DATA
 NO DATA
 160
 83
 NO DATA
JUN 1998
 0
 0
 0
 80
 60
 NO DATA
JUL 1998
 0
 0
 0
 40
 14
 NO DATA
AUG 1998
 0
 0
 0
 180
 54
 NO DATA
SEP 1998
 0
 0
 0
 20
 0
 NO DATA
OCT 1998
 0
 0
 0
 60
 3
 NO DATA
NOV 1998
 0
 0
 0
 100
 8
 NO DATA
DEC 1998
 0
 0
 0
 40
 1
 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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