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Operation Clearwater 2009 Results

Values are the number of enterococci (CFU/100 ml).  According to the EPA, enterococci counts less than 105/100 ml indicate that water is suitable for swimming. 

Location
Bacteria count  (Enterococci, cfu/100 ml)
Date

7/1*

7/8

7/15

7/22

7/29

8/5

Glen Oban

4

2

2

4

4

1

Pines

48

12

4

2

48

1

Brown’s Pond

60

 

2

 

36

 

Adm. Hts - Williams

 

4

 

32

 

56

Adm. Hts - Dewey Dr

 

 

4

 

20

 

Oyster Harbor

5

16

16

8

4

2

Annapolis Roads

 

 

2

2

8

2

Saefern

56

24

2

8

2

10

The Downs

68

8

2

4

12

10

Sherwood Forest - pier

12

4

1

8

72

1

Herald Harbor – Bonaparte Beach

400

416

130

20

40

430

Herald Harbor – Riverside Dr.

4

2

1

2

2

8

Pointfield Landing

430

 

5

 

28

 

Ben Oaks - pond

4

 

2

 

2

 

Hendler Road

2

 

1

 

4

 

Carrollton Manor - Hillbottom

 

 

12

12

 

28

Carrollton Manor - Sunset

 

 

44

 

40

 

West Severna Park

 

 

 

 

20

14

*  7/1: between 0.5-0.76" rain within 12 hours of sampling

Enterococci are enumerated using EPA Method 1600.  The EPA has determined that this group of bacteria is the best indicator of recent fecal contamination of recreational water.  Water with enterococci counts (CFU) up to 104/100ml is considered safe for swimming or boating.  Counts highlighted in red exceed that limit.  [Samples are taken along the shoreline in shallow water.]

Questions?  Please contact Sally Hornor at sghornor@aacc.edu or 410-777-2842.


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