Water Electrical Conductivity (EC)

AUS-ASC-AGR-WEC General Moderate confidence

Benchmark Value

No specific value — see range
Range: 2.9 to 26.5 µS/cm
Optimal Range: 2.9 to 26.5
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 3 benchmarks together — the OptimalRange form drives the primary score, while 2 guard(s) constrain the result.

Evidence & Context

Based on established guidelines and empirical data from reference catchments in the Australian Alps, a reference EC value of < 30 µS/cm is proposed. More specifically, a range reflecting observed natural background levels in minimally disturbed streams, such as 2.9 – 26.5 µS/cm, represents the target for high environmental health.

Metric Definition:

Water electrical conductivity (EC) in water bodies within the Australian Alpine and Subalpine Complex under best-practice sustainable or regenerative agricultural crop production.

Benchmark Definition:

Water electrical conductivity (EC) benchmark representing natural background levels in minimally disturbed alpine and subalpine streams.

Justification:

The benchmark is an ecologically sound inference supported by robust scientific data from pristine or minimally disturbed alpine catchments and regional water quality guidelines, despite the absence of direct empirical data from agricultural crop production sites in this biome.

Sources (1)

Preview of NSW alpine resorts environmental performance report 2020–21
NSW alpine resorts environmental performance report 2020–21 Journal

NSW Alpine Resorts Environmental Performance Report 2020–21

View Source

Context

  • Region Australia
  • Biome Alpine and Subalpine Complex
  • Land Use Agricultural Crop Production
  • Assessment Conservation Target
  • Evidence Type ReferenceCondition

Lifecycle

  • Status Active
  • Version 1
  • Effective From 17 Mar 2026

Notes

The benchmark assumes best-practice agriculture would maintain water EC near natural background levels characteristic of undisturbed alpine streams. The natural background EC is very low due to geology, climate, and hydrology.