Water Nitrate
Benchmark Value
Scoring Curve
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
Evidence & Context
Upper Detrimental Threshold (95% Species Protection): 1.1 mg/L as NO3−-N.1 Converted to mg/L as NO3−: 1.1 mg/L N×4.4268=4.87 mg/L NO3−.This value represents the concentration above which direct toxic effects on a significant portion (5%) of aquatic species are expected.
Upper detrimental threshold for nitrate concentration in tropical rainforest aquatic ecosystems, defined as the 95% species protection guideline for soft water.
This benchmark represents the nitrate concentration threshold in tropical rainforest aquatic ecosystems above which direct toxic effects on 5% of aquatic species are expected, indicating potential ecological harm.
This threshold is based on the draft 2024 Australian and New Zealand Guidelines for Fresh and Marine Water Quality (ANZG) for toxicant default guideline values.
Sources (1)
Toxicant default guideline values for aquatic ecosystem protection ...
View SourceSupporting Sources (1)
Additional references from the underlying research that informed this benchmark.
Water quality guidelines - Queensland Environment Department, accessed July 31, 2025,
View Source