Capturing Value: Nutrient credits, measured at the source.
Eco Detection’s industry leading nutrient crediting methodology pairs high-frequency Ion-Q+ concentration data with dedicated flow monitoring – turning continuous in-situ measurement into a defensible, ENVOMARK certified credit under the Eco Markets Australia framework.
From runoff and liability to resource and credit – real-time insight for a sustainable water future
Measured load vs. modelled water benefits
The World Resources Institute’s Volumetric Water Benefit Accounting (VWBA) framework — and its’ companion Water Quality Benefit Accounting (WQBA) guidance for nutrient outcomes — is the leading voluntary standard for quantifying corporate water stewardship claims.
It ranks directly measured data as its highest-confidence tier, above modelled or estimated indicators. Eco Detection’s methodology is built to sit at that top tier by design, replacing periodic grab-sampling and emission-factor modelling with continuous, sensor-measured concentration and flow.
| Dimension | Typical VWBA / WQBA practice | Eco Detection methodology |
| Data basis | Estimated using published emission factors, models, or periodic (often monthly) grab samples | Directly measured nutrient concentration via Ion-Q+, up to half-hourly |
| Flow data | Often modelled or drawn from nearby gauges not co-located with the discharge point | Dedicated flow sensor installed with every Ion-Q+ system, at the same point |
| Output metric | VWBA: volume of water benefit. WQBA: modelled mass-load reduction (kg N / kg P) | Measured mass load (concentration × flow), integrated continuously over time |
| Temporal resolution | Annual or seasonal averages; storm and flush events are usually smoothed out or missed | Sub-daily resolution; captures storm peaks, first-flush events and diurnal flux directly |
| Governance | Voluntary, principle-based corporate guidance; self-reported claims | Peer-reviewed Standard and Methodology, independently audited, ENVOMARK-registered credits |
Standards our data is built to support
The draft methodology has been submitted for approval through the Eco-Markets Australia Nature Valued Framework. In parallel, the underlying measurement approach — continuous, co-located concentration and flow data — is designed to meet the evidentiary bar used by comparable nutrient-accounting regimes internationally.
United States
Europe & UK
- US EPA Water Quality Trading Policy (2003): supports nutrient (N & P) trading within a TMDL or defined watershed area, and calls for monitoring consistent with permit compliance measurement
- State nutrient credit exchanges anchored in TMDLs (e.g. the Chesapeake Bay / Virginia Nutrient Credit Exchange): our continuous, co-located load data exceeds the periodic-sampling evidence typically used for credit verification
- NPDES-linked compliance monitoring: high-frequency concentration and flow data gives permittees a defensible, auditable record of discharged load
- EU Water Framework Directive (2000/60/EC): our data resolution supports the chemical and nutrient-status monitoring member states must undertake in surface waters
- England’s Nutrient Neutrality regime and Natural England’s Nutrient Mitigation Scheme: credit buyers require verified N/P load reductions — measured load data offers stronger evidence than modelled mitigation estimates
- Habitats Regulations catchment assessments: continuous data supports the load-based evidence increasingly expected in Environmental Delivery Plans
| Measuring the value of nutrients from your assets will enable you to justify business decisions through quantifiable economic outcomes. |