Water Electrical Conductivity (EC)

AUS-TSW-AQU-WEC General Moderate confidence

Benchmark Value

No specific value — see range

Range: 5000 to 1.5E+04 µS/cm

Optimal Range: 5000 to 1.5E+04

Direction: Lower 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 13 benchmarks together — the OptimalRange form drives the primary score, while 12 guard(s) constrain the result.

Contributing Benchmarks

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

Evidence & Context

A range of 5,000 – 15,000 µS/cm is proposed.

Metric Definition:

Water Electrical Conductivity (EC) in inland saline aquaculture systems

Benchmark Definition:

This benchmark defines the optimal operational electrical conductivity range for best-practice inland saline aquaculture in Australia's temperate semi-arid woodlands, reflecting sustainable use of moderately saline water for culturing adapted euryhaline species.

Justification:

This range is scientifically defensible because it falls within the documented EC of available groundwater resources, aligns with the physiological optima of key cultured species, and is consistent with operational data from similar semi-arid environments.

Sources (3)

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 Journal

Turbidity | Australia state of the environment 2021

View Source

Preview of Saltwater success inland: Exploring the potential of saline aquaculture | FRDC

Saltwater success inland: Exploring the potential of saline aquaculture | FRDC GreyLiterature

Inland Saline Aquaculture | FRDC

View Source

Preview of Water quality of surface water environments - NSW Government Water, accessed August 1, 2025,

Water quality of surface water environments - NSW Government Water, accessed August 1, 2025, Government

National Guidelines for Water Quality | Department of Natural ...

View Source

Supporting Sources (3)

Additional references from the underlying research that informed this benchmark.

Australian and New Zealand Guidelines for Fresh and Marine Water Quality (2000), accessed May 11, 2025,

Direct Evidence Journal

Northern Territory Government (2020) Darwin Harbour Region Water Quality Objectives, Report Card Section 3.0.

View Source

Low water conductivity increases the effects of copper on the serum parameters in fish (Oreochromis niloticus) - PubMed

Direct Evidence Journal

Low water conductivity increases the effects of copper on the serum parameters in fish (Oreochromis niloticus) - PubMed

View Source

Salinity | Land and soil - Environment and Heritage - NSW Government, accessed August 11, 2025

Direct Evidence Government

Australia state of the environment 2021: land, accessed July 28, 2025

View Source

Context

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

Lifecycle

Status Active
Version 1
Effective From 5 Jun 2026

Notes

The benchmark reflects the sustainable use of naturally saline groundwater for the culture of appropriate euryhaline species, rather than attempting to meet inappropriate low-EC targets designed for freshwater ecosystems. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

Other benchmarks in the AUS-TSW-AQU-WEC family.