Water Turbidity

AUS-TSW-IND-WTU General Moderate confidence

Benchmark Value

10 NTU

Direction: Lower is desirable ↓

Form: MaximumOnly

Scoring Curve

This curve shows how a field measurement for this indicator would score across all available benchmark forms in this context. The scoring engine uses 9 benchmarks together — the OptimalRange form drives the primary score, while 8 guard(s) constrain the result.

Contributing Benchmarks

OptimalRange Primary MaximumOnly Guard MaximumOnly Guard MaximumOnly Guard MaximumOnly Guard MinimumOnly Guard MinimumOnly Guard MaximumOnly Guard OptimalRange Guard

Evidence & Context

A precise, universally applicable numerical benchmark for the "best available condition" of water turbidity, specifically for receiving waters within well-managed Industrial & Infrastructure Use sites in Temperate Semi-Arid Shrublands & Open Woodlands, is not explicitly detailed as a single, measured value within the provided scientific literature. However, general ecological guidance for maintaining good environmental water clarity in freshwaters suggests a target below 10 NTU.

Metric Definition:

Water turbidity as a measure of suspended particles affecting light penetration and aquatic ecosystem health.

Benchmark Definition:

This benchmark represents an ecologically desirable maximum turbidity level for water clarity in freshwaters within Industrial & Infrastructure Use areas of Temperate Semi-Arid Shrublands & Open Woodlands in Australia.

Justification:

The selection of a median turbidity value of <10 NTU as the benchmark for "best available condition" is made with moderate confidence. This value aligns with general ecological health goals and represents an ecologically desirable state for good environmental water clarity.

Sources (1)

Preview of Assessing Water Quality - Secondary Education Years 9 to 12 - Upper Murrumbidgee Waterwatch, accessed August 12, 2025,

Assessing Water Quality - Secondary Education Years 9 to 12 - Upper Murrumbidgee Waterwatch, accessed August 12, 2025, Journal

Assessing water quality - ACT Waterwatch.

Supporting Sources (32)

Additional references from the underlying research that informed this benchmark.

Preview of (PDF) A Geospatial Database for Effective Mine Rehabilitation in Australia - ResearchGate, accessed July 16, 2025,

(PDF) A Geospatial Database for Effective Mine Rehabilitation in Australia - ResearchGate, accessed July 16, 2025,

Contextual Support Journal

(PDF) A Geospatial Database for Effective Mine Rehabilitation in Australia - ResearchGate, accessed July 16, 2025,

Preview of Ambient Water Quality Guidelines (Criteria) for Turbidity ... - Gov.bc.ca, accessed July 16, 2025,

Ambient Water Quality Guidelines (Criteria) for Turbidity ... - Gov.bc.ca, accessed July 16, 2025,

Contextual Support Journal

Ambient Water Quality Guidelines (Criteria) for Turbidity ... - Gov.bc.ca, accessed July 16, 2025,

Preview of Appendix E Rehabilitation Benchmarking Study - EPA WA, accessed July 16, 2025,

Appendix E Rehabilitation Benchmarking Study - EPA WA, accessed July 16, 2025,

Contextual Support Journal

Appendix E Rehabilitation Benchmarking Study - EPA WA, accessed July 16, 2025,

Preview of Australian and New Zealand guidelines for fresh and marine water quality, accessed July 19, 2025,

Australian and New Zealand guidelines for fresh and marine water quality, accessed July 19, 2025,

Contextual Support Government

Australian Alps Liaison Committee (AALC). (2011). Caring for our Australian Alps catchments: A climate change action strategy. Department of Climate Change and Energy Efficiency.

Preview of Baseline Water Quality Monitoring - EPA WA, accessed July 16, 2025,

Baseline Water Quality Monitoring - EPA WA, accessed July 16, 2025,

Contextual Support Journal

Baseline Water Quality Monitoring - EPA WA, accessed July 16, 2025,

Preview of Categories - Turbidity - CSIRO Data Access Portal, accessed July 16, 2025,

Categories - Turbidity - CSIRO Data Access Portal, accessed July 16, 2025,

Contextual Support Government

Categories - Turbidity - CSIRO Data Access Portal, accessed July 16, 2025,

Preview of Categories - Water quality - CSIRO Data Access Portal, accessed July 16, 2025,

Categories - Water quality - CSIRO Data Access Portal, accessed July 16, 2025,

Contextual Support Government

Water Quality Data Home, accessed July 25, 2025

Preview of Characterising the relationship between water quality and water quantity, accessed August 5, 2025

Characterising the relationship between water quality and water quantity, accessed August 5, 2025

Contextual Support Journal

Turbidity | Australia state of the environment 2021

Preview of Coal mine-affected water releases, turbidity and metal concentrations in the Fitzroy River Basin, Queensland, Australia | Request PDF - ResearchGate, accessed July 16, 2025,

Coal mine-affected water releases, turbidity and metal concentrations in the Fitzroy River Basin, Queensland, Australia | Request PDF - ResearchGate, accessed July 16, 2025,

Contextual Support Journal

Coal mine-affected water releases, turbidity and metal concentrations in the Fitzroy River Basin, Queensland, Australia | Request PDF - ResearchGate, accessed July 16, 2025,

Preview of Ecological effects of common carp (Cyprinus carpio) in a semi-arid floodplain wetland, accessed July 16, 2025,

Ecological effects of common carp (Cyprinus carpio) in a semi-arid floodplain wetland, accessed July 16, 2025,

Contextual Support Journal

Coal mine-affected water releases, turbidity and metal concentrations in the Fitzroy River Basin, Queensland, Australia | Request PDF - ResearchGate

Preview of Ecosystem Processes – Environmental Data Collection Methods - TERN Australia

Ecosystem Processes – Environmental Data Collection Methods - TERN Australia

Contextual Support Methodology Source Government

Ecosystem Processes – Environmental Data Collection Methods - TERN Australia, accessed July 17, 2025

Preview of Effects of common carp on water quality and submerged vegetation: results from a short-term mesocosm experiment in an artificial wetland - CSIRO Publishing, accessed July 16, 2025,

Effects of common carp on water quality and submerged vegetation: results from a short-term mesocosm experiment in an artificial wetland - CSIRO Publishing, accessed July 16, 2025,

Contextual Support Journal

Effects of common carp on water quality and submerged vegetation: results from a short-term mesocosm experiment in an artificial wetland - CSIRO Publishing

Preview of Environment Monitoring Systems & Data for Ecosystem Studies ..., accessed July 30, 2025,

Environment Monitoring Systems & Data for Ecosystem Studies ..., accessed July 30, 2025,

Contextual Support Methodology Source Government

(PDF) Evaluation of genetic markers for the metabarcoding of ...

Preview of Guidance document for assessing and managing water quality in temporary waters, accessed July 16, 2025,

Guidance document for assessing and managing water quality in temporary waters, accessed July 16, 2025,

Contextual Support Direct Evidence Journal

Guidance document for assessing and managing water quality in temporary waters, accessed July 10, 2025,

Preview of Guidelines - Water Quality Australia, accessed August 1, 2025,

Guidelines - Water Quality Australia, accessed August 1, 2025,

Contextual Support

Guidelines - Water Quality Australia, accessed August 10, 2025

Preview of Guidelines for the management of water in mines and quarries - Resources Victoria, accessed July 24, 2025

Guidelines for the management of water in mines and quarries - Resources Victoria, accessed July 24, 2025

Contextual Support Government

Guidelines for the management of water in mines and quarries - Resources Victoria

Preview of Huntly Bauxite Mine – Water Quality Monitoring System Data Review - Alcoa, accessed July 16, 2025,

Huntly Bauxite Mine – Water Quality Monitoring System Data Review - Alcoa, accessed July 16, 2025,

Contextual Support Journal

Huntly Bauxite Mine – Water Quality Monitoring System Data Review - Alcoa

Preview of impacts-of-carp-in-wetlands-fact-sheet-4-accessible.docx - Water and catchments, accessed July 16, 2025,

impacts-of-carp-in-wetlands-fact-sheet-4-accessible.docx - Water and catchments, accessed July 16, 2025,

Contextual Support Journal

Water - BHP

Preview of Industrial Stormwater Monitoring and Sampling Guide - Environmental Protection Agency (EPA), accessed July 16, 2025,

Industrial Stormwater Monitoring and Sampling Guide - Environmental Protection Agency (EPA), accessed July 16, 2025,

Contextual Support Methodology Source

Industrial Stormwater Monitoring and Sampling Guide - Environmental Protection Agency (EPA), accessed July 16, 2025,

Preview of Industry | Australia state of the environment 2021, accessed August 2, 2025,

Industry | Australia state of the environment 2021, accessed August 2, 2025,

Contextual Support

R&D Priorities – Australia's estuaries, embayments and nearshore marine environments, accessed July 24, 2025,

Preview of Performance Comparison of Structural Stormwater Best Management Practices | Request PDF - ResearchGate, accessed July 16, 2025,

Performance Comparison of Structural Stormwater Best Management Practices | Request PDF - ResearchGate, accessed July 16, 2025,

Contextual Support Methodology Source Journal

Performance Comparison of Structural Stormwater Best Management Practices | Request PDF - ResearchGate, accessed July 16, 2025,

Preview of River water quality: clarity and turbidity - Stats NZ

River water quality: clarity and turbidity - Stats NZ

Contextual Support Government

Australian Water Quality Guidelines for Fresh and Marine Waters 1992

Preview of Turbidity | Australian Drinking Water Guidelines - NHMRC, accessed August 11, 2025,

Turbidity | Australian Drinking Water Guidelines - NHMRC, accessed August 11, 2025,

Contextual Support Government

Turbidity | Australian Drinking Water Guidelines - NHMRC, accessed August 3, 2025

Preview of Turbidity measurement and monitoring in water quality analysis, accessed July 18, 2025,

Turbidity measurement and monitoring in water quality analysis, accessed July 18, 2025,

Contextual Support Methodology Source GreyLiterature

Turbidity measurement and monitoring in water quality analysis, accessed July 16, 2025,

Preview of Turbidity Measurement: A Simple, Effective Indicator of Water Quality Change, accessed July 16, 2025,

Turbidity Measurement: A Simple, Effective Indicator of Water Quality Change, accessed July 16, 2025,

Contextual Support Journal

Turbidity Measurement: A Simple, Effective Indicator of Water Quality Change, accessed July 16, 2025,

Preview of Water - BHP, accessed July 16, 2025,

Water - BHP, accessed July 16, 2025,

Contextual Support GreyLiterature

Water - BHP, accessed July 16, 2025,

Preview of Water - CSIRO, accessed July 16, 2025,

Water - CSIRO, accessed July 16, 2025,

Contextual Support Government

A review of water quality studies relevant to northern Australia - CSIRO, accessed July 25, 2025

Preview of Water quality guidelines - Queensland Environment Department, accessed August 1, 2025,

Water quality guidelines - Queensland Environment Department, accessed August 1, 2025,

Contextual Support Government

Australian and New Zealand Guidelines for Fresh and Marine Water Quality (2000)

Preview of Water quality guidelines - Queensland Environment Department, accessed August 4, 2025,

Water quality guidelines - Queensland Environment Department, accessed August 4, 2025,

Contextual Support Journal

Seasonal changes in water quality and macrophytes and the ...

Preview of Water Quality Objectives for the Darwin Harbour Region - Background Document - Department of Lands, Planning and Environment, accessed July 16, 2025,

Water Quality Objectives for the Darwin Harbour Region - Background Document - Department of Lands, Planning and Environment, accessed July 16, 2025,

Contextual Support Journal

Water Quality Objectives for the Darwin Harbour Region - Background Document - Department of Lands, Planning and Environment

Preview of Water Quality Protection Guidelines No. 5 - Government of Western ..., accessed July 24, 2025

Water Quality Protection Guidelines No. 5 - Government of Western ..., accessed July 24, 2025

Contextual Support Regulatory Framework Journal

Assessment of Impacts of Coal Mining in the Region of Sydney, Australia on the Aquatic Environment Using Macroinvertebrates and Chlorophyll as Indicators

Preview of WESTERN AUSTRALIAN WATER QUALITY GUIDELINES FOR FRESH AND MARINE WATERS - DBCA Library, accessed July 16, 2025,

WESTERN AUSTRALIAN WATER QUALITY GUIDELINES FOR FRESH AND MARINE WATERS - DBCA Library, accessed July 16, 2025,

Contextual Support Journal

WESTERN AUSTRALIAN WATER QUALITY ... - DBCA Library, accessed July 25, 2025,

Context

Region Australia
Biome Temperate Semi-Arid Shrublands & Open Woodlands
Land Use Industrial & Infrastructure Use
Assessment Not Stated
Evidence Type ReferenceCondition

Lifecycle

Status Superseded
Version 1
Effective From 1 Jun 2026
Effective To 1 Jun 2026

Notes

No upper detrimental threshold — higher values are always worse beyond this maximum. This value aligns with general ecological health goals despite limited direct data for the specific region and land use. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

Other benchmarks in the AUS-TSW-IND-WTU family.