Water Turbidity

AUS-AKW-AQU-WTU General Moderate confidence

Benchmark Value

No specific value — see range
Range: 5 to 15 NTU
Optimal Range: 5 to 15
Direction: Higher is desirable ↑
Form: OptimalRange

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 20 benchmarks together — the OptimalRange form drives the primary score, while 19 guard(s) constrain the result.

Contributing Benchmarks

OptimalRange Primary LowerThreshold Guard UpperThreshold Guard Point Guard UpperThreshold Guard MaximumOnly Guard LowerThreshold Guard OptimalRange Guard OptimalRange Guard LowerThreshold Guard MaximumOnly Guard UpperThreshold Guard MaximumOnly Guard OptimalRange Guard MinimumOnly Guard Point Guard LowerThreshold Guard OptimalRange Guard UpperThreshold Guard MaximumOnly Guard

Evidence & Context

The optimal state for such a system is the active management of turbidity within a narrow, stable range that avoids both the stress of hyper-clarity and the system degradation indicated by higher turbidity.

Metric Definition:

Optimal operational turbidity range in a groundwater-fed Recirculating Aquaculture System (RAS) for environmental health and productivity.

Benchmark Definition:

Optimal turbidity range for maintaining system health and productivity in RAS.

Justification:

Reflects a healthy, stable, and productive system state above the lower stress threshold and below the operational malfunction threshold.

Sources (1)

Preview of Derived Benchmark based on Functional Analogue (MainStream Aquaculture) and National Guidelines (ANZECC/ANZG)
Derived Benchmark based on Functional Analogue (MainStream Aquaculture) and National Guidelines (ANZECC/ANZG) Government

Derived Benchmark based on Functional Analogue (MainStream Aquaculture) and National Guidelines (ANZECC/ANZG)

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Supporting Sources (2)

Additional references from the underlying research that informed this benchmark.

Preview of National Guidelines for Water Quality - Department of Natural Resources and Environment Tasmania, accessed August 1, 2025,
National Guidelines for Water Quality - Department of Natural Resources and Environment Tasmania, accessed August 1, 2025,
Direct Evidence

Australian and New Zealand Guidelines for Fresh and Marine Water ...

View Source
Preview of The Impact of Turbidity on Fish Health in Aquaculture Systems
The Impact of Turbidity on Fish Health in Aquaculture Systems
Contextual Support Journal

The Impact of Turbidity on Fish Health in Aquaculture Systems

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Context

  • Region Australia
  • Biome Arid Karstic Woodlands & Shrublands
  • Land Use Aquaculture
  • Assessment Pristine Reference
  • Evidence Type HealthyOperationalRange

Lifecycle

  • Status Active
  • Version 1
  • Effective From 19 Mar 2026

Notes

Range is species-specific; for barramundi, this range supports stable, low-turbidity environment under control.

Related Benchmarks

Other benchmarks in the AUS-AKW-AQU-WTU family.

15 NTU Moderate
Aquaculture · Pristine Reference
MaximumOnly Active v1
15 NTU Moderate
Aquaculture · Pristine Reference
MinimumOnly Active v1