Water Electrical Conductivity (EC)

AUS-TSW-LVG-WEC General High confidence

Benchmark Value

800 µS/cm

Direction: Lower is desirable ↓

Form: MaximumOnly

Scoring Curve

Scoring curve unavailable

The scoring engine could not generate a curve for this benchmark context. The primary form is CompositeFramework, but the benchmark data may be missing required fields (e.g., optimal range bounds for an OptimalRange benchmark). This is typically a data quality issue in the benchmark pipeline.

Contributing Benchmarks

CompositeFramework Primary OptimalRange Guard OptimalRange Guard MaximumOnly Guard OptimalRange Guard MaximumOnly Guard MaximumOnly Guard OptimalRange Guard MaximumOnly Guard MaximumOnly Guard Point Guard Point Guard MaximumOnly Guard MaximumOnly Guard

Evidence & Context

Based on this synthesis, the proposed benchmark for surface water Electrical Conductivity in a temperate semi-arid shrubland or open woodland demonstrating high environmental health under best-practice livestock grazing is < 800 µS/cm.

Metric Definition:

Surface water Electrical Conductivity (EC) in temperate semi-arid shrubland or open woodland under best-practice livestock grazing.

Benchmark Definition:

This benchmark represents the upper limit of surface water electrical conductivity indicating high environmental health in temperate semi-arid shrublands and open woodlands under best-practice livestock grazing. Values below this threshold indicate better water quality and ecological condition.

Justification:

This value is selected based on convergence of evidence from the Murray-Darling Basin Authority, national water quality classifications, and precautionary principle to ensure ecological health.

Sources (3)

Australian and New Zealand Guidelines for Fresh and Marine Water Quality (2000) - Volume 3 - Chapter 9 - Primary Industries Government

Australian and New Zealand Guidelines for Fresh and Marine Water Quality (2000) - Volume 3 - Chapter 9 - Primary Industries

View Source

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

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

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

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 (1)

Additional references from the underlying research that informed this benchmark.

Salinity - Murray–Darling Basin Authority, accessed August 11, 2025,

Contextual Support Government

Salinity | Murray–Darling Basin Authority

View Source

Context

Region Australia
Biome Temperate Semi-Arid Shrublands & Open Woodlands
Land Use Livestock Grazing & Pasture
Assessment Not Stated
Evidence Type HealthyOperationalRange

Lifecycle

Status Superseded
Version 3
Effective From 10 Jun 2026
Effective To 10 Jun 2026

Notes

This benchmark represents the upper limit for surface water considered to be of high ecological quality ('low salinity' or 'fresh') in the context of Australia's temperate semi-arid regions, based on multiple authoritative sources. Lower values indicate higher purity and better condition. The upper detrimental threshold for aquatic ecosystem health is > 1000 µS/cm. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

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