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Prioritizing Human Health: Tackling Bacteria through a Risk-Based Lens


The Challenge

In sun-soaked Southern California, bacteria impairments cast a shadow on water quality, leading to beach closures and unsafe conditions for those seeking to enjoy the great outdoors. The Los Angeles River and its tributaries, under the watchful eye of a 2010 Bacteria Total Maximum Daily Load (TMDL), needed a fresh approach to tackle this persistent problem.


Our Approach

Here’s how we’re working towards a healthier future for the Upper Los Angeles River Watershed:


  1. Innovative Methodology: We developed an innovative method to address bacteria, focusing on the highest-risk sources and areas. 

  2. Risk-Based Focus: Our approach hones in on the most significant threat - human waste - and the areas where illness-causing pathogens are most likely to be present. 

  3. Repeatable Framework: We've created a robust and successful framework that can be used time and time again.

  4. Targeted Source Control: By refocusing efforts on the most critical areas, we've renewed emphasis on targeted source control in management strategies.

  5. Regulatory Progress: Through ongoing coordination with Los Angeles Regional Board staff, we're progressing dialogue on the value of our risk-based approach. We believe in going beyond simply following regulations, and instead helping to shape more reasonable and effective pathways towards achieving bacteria objectives.


Key Takeaways

  • Risk-based approach: Focusing on the most significant threats to human health

  • Continual innovation: Developing new, more effective ways to address persistent problems

  • Scalable solutions: Creating frameworks that can be applied across different watersheds

  • Collaborative progress: Working with regulatory bodies to drive meaningful change

  • Health-centric focus: Prioritizing human well-being in water quality management


Learn more at:

https://storymaps.arcgis.com/stories/466afe14077a436aabd8f072ed20ee2e 

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