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Protecting Public Water Supplies in the S. Willamette Valley GWMA

Protecting Public Water Supplies in the S. Willamette Valley GWMA. A Brief Overview of Source Water Assessments and Drinking Water Protection Plans. Drinking Water Protection Awareness.

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Protecting Public Water Supplies in the S. Willamette Valley GWMA

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  1. Protecting Public Water Supplies in the S. Willamette Valley GWMA A Brief Overview of Source Water Assessments and Drinking Water Protection Plans

  2. Drinking Water Protection Awareness • Elevated nitrate concentrations within the GWMA indicate that the local aquifer system is highly sensitive to contamination. • Leverage the nitrate issue to raise overall awareness that public water supplies within the GWMA are susceptible to other forms of contamination. • Utilize the Public Drinking Water/Sewer Sub-committee to develop a Drinking Water Protection Plan Template based on common regional issues within the GWMA.

  3. GWMA Drinking Water Supplies • Federally Regulated • Serves 25 or more people or has 15 or more service connections. • State Regulated • Serves 10 to 24 people or has 4 to 14 service connections. • Private

  4. Regulated Public Water Supplies Inside the GWMA • 54 Total Public Water Supplies within GWMA. • 15 State Regulated • 39 Federally Regulated • 13 are cities, rural sub-divisions, and/or mobile home parks. • 8 are schools and/or places of work. • 18 are rest areas, restaurants, gas stations, etc…

  5. Source Water Assessment Project • What is it? • DHS/DEQ project to assess the susceptibility of public drinking water supplies to contamination. • Focus? • All federally regulated public water supplies. • Why? • Requirement of the 1996 Safe Drinking Water Act amendments.

  6. Source Water Assessments • Key Elements: • Identify Drinking Water Protection Area. • Assess water system sensitivity to contamination (source area and intake construction). • Inventory potential contaminant sources inside “Protection Area” and assign a risk factor. • Determine water system susceptibility to identified potential contaminant sources.

  7. Source Water Assessments • Results: • Source Water Assessment Report sent to water system • Map of the drinking water protection area. • Tables listing potential contaminant inventory results with locations shown on a map. • Susceptibility results documented and shown on a map. • Narrative of the procedures for conducting the assessment.

  8. Source Water Assessments

  9. Source Water Assessments • Goal: • Provide Public Water Suppliers, and the community at large, with the information that will assist with the implementation of education, protection, and pollution prevention measures that will: • Provide a high quality water supply. • Minimize future public expenditures for drinking water treatment.

  10. Drinking Water Protection Plans • Key elements for a “State Certified” plan. • Assemble a community planning team. • Enhance/review the potential contaminant source inventory. • Develop a Management Plan. • Develop a Contingency Plan. • Obtain DEQ certification. • Implement Protection Plan. • Petition for DHS-DWP monitoring waivers.

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