safe to swim program - my water quality · safe to swim program region-wide monitoring of ambient...
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Central Valley Regional Water Quality Control Board
Safe to Swim Program
October 18, 2012
Alisha Wenzel
Ag & Surface Water Assessment Unit
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People
Project Planning and
Outreach
Catherine Gill
Anne Littlejohn
TJ Ditto
Bethany Soto (Fresno)
Guy Chetelat (Redding)
Project Support
Sarah Rutherford
Gordon VanCamp
Clair Anderson
True Khang
Victoria Tomlinson
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Presentation Overview
Central Valley Region
Quick Introduction to SWAMP
Safe to Swim Monitoring 2007-2012
Reports and Findings
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Central Valley Region
S a c r a m e n t oS a c r a m e n t o
R i v e r B a s i nR i v e r B a s i n
D e l t aD e l t a
T u l a r e L a k eT u l a r e L a k e
B a s i nB a s i n
S a n J o a q u i n S a n J o a q u i n
R i v e r B a s i nR i v e r B a s i n
Largest of the nine
Regional Water Boards
Three distinct basins
Diverse terrain, land
use, and water quality
issues
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Surface Water Ambient Monitoring Program
SWAMP is tasked with assessing water quality in all of
California’s surface waters. The program conducts monitoring
directly and through collaborative partnerships, all designed
to support water resource management in California.
Find out more at www.waterboards.ca.gov/swamp
Tools
Webinars
Reports
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Surface Water Ambient Monitoring Program
Statewide program has focused on aquatic life and
fish consumption.
Water
Body Type
Beneficial Uses
Aquatic Life Safe to Eat Safe to Swim Safe to Drink
Wadeable
Streams
Large
Rivers
Lakes
Coastal
Waters
Bays & Estuaries Not applicable
Wetlands Not applicable Not applicable Not applicable
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Safe to Swim
Reasons for focus on swimming:
• Fill data gap
• Relative low cost
• Public interest
• Opportunity for coordination
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Indicators
E. coli
• Analysis using IDEXX Colilert
• US EPA recreation guidelines
Pathogens
• Sites with elevated E. coli
• Giardia, Cryptosporidium, Salmonella,
E. coli O157:H7
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Coordination with Watershed Groups
Watershed groups help to:
• Identify swimming holes
• Collect samples
SWAMP provides:
• Training, supplies, field sheets
• Sample analysis
• Data management and reporting
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Safe to Swim Program
Region-wide monitoring of ambient condition
Swimming holes on rivers and creeks
Sampling during the summer swimming season
Monitoring design evolved and expanded over time
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Safe to Swim 2007: Pilot Study
2 watershed groups
15 sites
3 sample events:
before, during, and
after Labor Day
weekend
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Safe to Swim 2008: Labor Day
21 watershed groups
56 sites
3 sample events:
before, during, and
after Labor Day
weekend
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Safe to Swim 2009: Sources
Follow-up
• 2 watershed groups
• 17 sites
• E. coli and pathogens
Bacteria Source ID
Study:
• 12 sites
• 5 sample events
• E. coli, pathogens,
bacteroidales
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Safe to Swim 2010
8 watershed groups
67 sites
12 lake sites
1 to 3 sample events
Limited pathogen
sampling
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Safe to Swim 2011
7 watershed groups
77 sites
Monthly or bimonthly
monitoring events
Targeted pathogen
monitoring
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Safe to Swim 2012
6 watershed groups
73 sites
Monthly or bimonthly
monitoring events
Targeted pathogen
monitoring
16 lake sites sampled
before and after the 4th
of July
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2013 and Beyond
Plan to continue current monitoring design
Continue to refine sites
Opportunities to expand monitoring
• Lakes
• Delta
• Events (triathlons, rafting days)
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Sharing Information
Preliminary results
• County Health Departments
• Our Partners
Final results available through CEDEN
Watershed Data Sheets
Assessment Reports and Fact Sheets
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Summary of Findings
2007 2008 2009 2010 2011* 2012* Total
Site Summary
# Sites 15 56 29 89 77 89 161
# Sites with
Samples >235 2 4 15 17 31 33 57
Sample Summary
# Samples 44 167 74 161 389 437 1272
# Samples >235 2 6 27 35 86 90 246
% Samples >235 5% 2% 20% 11% 8% 8% 4%
*2011 and 2012 results are preliminary
235 MPN/100 mL is the US EPA
guideline for a single sample maximum
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Resources
SWAMP website: Access to report, fact sheets,
and program information www.swrcb.ca.gov/rwqcb5/water_issues/swamp/index.shtml
CEDEN: Query and download data
www.ceden.org
My Water Quality Portal: Safe to swim monitoring
and assessment information www.cawaterquality.net
Central Valley Monitoring Directory: current
monitoring information
www.centralvalleymonitoring.org
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Our Partners
South Yuba River Citizens League
Big Chico Creek Watershed Alliance
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More Information
To find out about participating contact
For more information about SWAMP contact
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Questions?