Arkansas Water Quality Standards
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Arkansas Water Quality Standards. Ryan Benefield Deputy Director. Surface Waters Elements Designated Uses Water Quality Criteria Antidegredation Exemptions. Water Quality Standards. Picture Taken From Designated Uses.

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Arkansas Water Quality Standards

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Arkansas water quality standards

Arkansas Water Quality Standards

Ryan Benefield

Deputy Director

Water quality standards

Surface Waters


Designated Uses

Water Quality Criteria



Water Quality Standards

Picture Taken From

Designated uses

Designated Uses

Those uses specified in the water quality standards for each water body or stream segment whether or not they are being attained.

  • Extraordinary Resource Waters (ERW)

  • Ecologically Sensitive Waterbody

  • Natural and Scenic Waterways

  • Primary Contact Recreation

  • Secondary Contact Recreation

  • Fisheries (Soon to be labeled Aquatic Life)

  • Domestic Water Supply

  • Industrial Water Supply

  • Agricultural Water Supply

Designating waterbodies

Designating Waterbodies

  • Must Designate All Existing Uses *November 28, 1975

  • Fishable/Swimmable Required (Rare Exceptions)

  • Waste Transport Not Acceptable

Picture Taken From

Arkansas ecoregions

Arkansas Ecoregions

Ouachita mountains ecoregion

Ouachita Mountains Ecoregion

Ouachita mountains du

Ouachita Mountains - DU

Reclassification of dus

Reclassification of DUs

Can not be an “Existing Use”

Use Attainability Analysis

Natural Condition

Irreversible Human Condition

Attainment would cause more harm

Social and Economic Costs

Public Participation Required

EPA Review and Approval

Water quality criteria

Water Quality Criteria

Consistent Scientifically with Designated Uses

Type of Criteria




Narrative criteria

Narrative Criteria


Materials stimulating algal growth shall not be present in concentrations sufficient to cause objectionable algal densities or other nuisance aquatic vegetation or otherwise impair and designated use of the waterbody

Numeric criteria toxics

Numeric Criteria - Toxics

Numeric criteria

Numeric Criteria

Numeric criteria minerals

Numeric Criteria - Minerals

Biological criteria

Biological Criteria

Clean water act process

Clean Water Act Process

Taken From



  • NPDES Permitting

  • Total Maximum Daily Load

  • Triennial Review

  • Regulation 2

  • 303d List

  • 305b Report

  • Continuing Planning Process

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