City of Boulder Water Quality Monitoring
Boulder Creek Watershed
North Boulder Creek - Boulder Creek
Longitudinal Fecal Coliform Profiles for November, 2001

Preliminary Data - subject to revision

Marker Indicates no data available
Marker Indicates data exceeds plot scale.

Information on Fecal Coliform:

Fecal Coliform Bacteria is found in the intestinal tracts of mammals. High concentrations of the bacteria in water or sludge suggest the presence of disease-causing organisms, and may be caused by septic tank failure, poor pasture and animal keeping practices, pet waste, and urban runoff.

To measure fecal coliform bacteria, water samples are collected in sterilized containers, filtered, and incubated at a certain temperature. The resulting bacterial colonies that form are counted and recorded as the number of colony producing units per 100 ml of water (CPU/100 ml). Safe drinking water should have fecal coliform counts of 0 CPU/100 ml. For safe swimming, concentrations less than 200 CPU/100 ml is desirable, and for boating, less than 1000 CPU/100 ml is desirable. However, these standards may vary at the local, state, and federal level.

More general information about Fecal Coliform
Measurement of Fecal Coliform
Factors affecting Fecal Coliform
Standards regarding Fecal Coliform
Interpretation of Boulder Creek Fecal Coliform data
Data Source: City of Boulder Water Quality Monitoring
Point of Contact: Chris Rudkin
Collection and Analysis notes
Analysis method: SM 9222D

Indicated monitoring site:

The above map indicates water quality monitoring sites. To view data at a specific site select it from the map with the mouse.

Plot Label SiteName FColi
#/100 mL
NBC-Lw North Boulder Creek diversion to Lakewood 3*
NBC-FALLS North Boulder Creek at Boulder Falls < 20*
BC-ORO Boulder Creek at Orodell 330
BC-CAN Boulder Creek at Eben G. Fine Park 110
BC-61 Boulder Creek at 61st St. 20
BC-aWWTP Boulder Creek above WW Plant 50
BC-75 Boulder Creek at 75th St 90
BC-aDC Boulder Creek above Dry Creek 220
BC-95 Boulder Creek at 95th St 80
BC-107 Boulder Creek at 107th St 20
BC-aCC Boulder Creek Above Coal Creek 20
BC-bCC Boulder Creek Below Coal Creek 170
*value below detection limit:
Detection Limit (if available) 20.0

Preliminary Data - subject to revision

Select on the parameter name to view more detailed information for that parameter in this month. Select on the site name to view data time series observed at that station. For monitoring site locations see site location map.

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