Septic Systems, Lake Health and Drinking Water Safety Lake - - PowerPoint PPT Presentation

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septic systems lake health and

Septic Systems, Lake Health and Drinking Water Safety Lake - - PowerPoint PPT Presentation

Sep 05, 2022 126 likes •214 views

Septic Systems, Lake Health and Drinking Water Safety Lake Networking Group: Septic Savvy, May 26, 2018 Holly Evans, Watershed Planning Coordinator CATARAQUI REGION CONSERVATION AUTHORITY One Water Drink Flush Swim Live 2

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CATARAQUI REGION CONSERVATION AUTHORITY

Septic Systems, Lake Health and Drinking Water Safety

Lake Networking Group: Septic Savvy, May 26, 2018 Holly Evans, Watershed Planning Coordinator

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One Water

Thurston County, 2018

Drink
Flush
Swim
Live

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Septic System Effluent

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Drinking Water Impacts

Pathogens
Nitrogen
Chemicals
Micropollutants

(pharmaceuticals and endocrine-active compounds)

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Nearshore Impacts

Algae
Pathogens
Increased biological oxygen demand
Reduced biodiversity / food web disturbance

EPA, 2017

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Lake-wide Impacts

Eutrophication
Algae blooms
Hypoxia
Reduced biodiversity / food web disturbance

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NATURAL ALTERED

✓

X

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Thank you

CATARAQUI REGION CONSERVATION AUTHORITY

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Holly Evans Coordinator, Watershed Planning hevans@crca.ca

References: Mallin, M.A., McIver, M.R., Pollutant impacts to Cape Hatteras National Seashore from urban runoff and septic leachate; Marine Pollution Bulletin 64 (2012) pages 1356 -1366 Phillips, P.J., Schubert, C., Argue, D., Fisher, I., Furlong, E.T., Foreman, W., Gray, J., Chalmers, A. Concentrations of hormones, pharmaceuticals and other micropollutants in groundwater affected by septic systems in New England and New York; Science of the Total Environment 512-513 (2015) pages 43 - 54 Rosenberger, E., Hampton, S.E., Fradkin, S.C., Kennedy, B.P.Effects of shoreline development on the nearshore environment in large deep oligotrophic lakes; Freshwater Biology 53 (2008) pages 1673 -1691 Saby, M., Larocque, M., Pinti, D.L., Barbecot, F., Gagne, S., Barnetche, D., Cabada, H., Regional assessment of concentrations and sources of pharmaceutically active compounds, pesticides, nitrate, and E. coli in post-glacial aquifer environments (Canada); Science

f the Total Environment 579 (2017) pages 557- 568

Sondergaarderik, M., Jeppesen, E., Anthropogenic impacts on lake and stream ecosystems, and approaches to restoration Journal

f Applied Ecology 44 (2007) Volume pages 1089 -1094