River Lugg Nutrient Neutrality Calculator

Work out your scheme's phosphorus budget for the River Lugg SAC (River Wye system) catchment — free, live, in your browser. Full Natural England methodology with the 20% buffer.

Phosphorus Herefordshire
Launch the River Lugg calculator — free, no sign-up

Opens NutrientMonkey. Pick River Lugg from the catchment list and the phosphorus toggle locks to match.

See a sample report (PDF) →

Stuck behind a River Lugg nutrient condition?

The River Lugg, part of the wider River Wye system, brought development across much of Herefordshire to a standstill. It’s a phosphorus catchment, and one of the most contested in the country.

If your site drains to River Lugg SAC (River Wye system), the planning authority can't grant permission until you've shown the scheme is nutrient neutral — that it won't add phosphorus to a catchment that's already overloaded. NutrientMonkey gets you the number: build the assessment on screen, watch your budget in kg/year update as you go, and export the planning-ready report when it's right.

Which nutrient applies here

The Lugg and Wye are assessed for phosphorus, the nutrient behind the algal blooms that have badly degraded the river. That matters, because the methodology and the credits differ by nutrient — and neighbouring catchments often differ. NutrientMonkey flags the River Lugg catchment for phosphorus and locks the tool to match, so the assessment is right from the start.

How the River Lugg calculator works

  1. Pick River Lugg from the catchment list — it's pre-flagged for phosphorus.
  2. Enter the dwellings & waste water — occupancy, water use (125 or 110 l/p/d plus NE's allowance) and the drainage route (septic, package plant or mains permit).
  3. Add land use & SuDS — current vs future land cover and any sustainable drainage, with editable export coefficients for the Herefordshire catchment values.
  4. Export when ready — a branded, planning-ready PDF with the budget in kg/year and every input documented.

Honest about what it is

This is a nutrient-methodology assessment built to support your River Lugg planning application — fast, clear and ready to discuss with your case officer. The official Natural England catchment calculator remains the statutory tool, and your figures should reproduce in it; the report states this plainly. Want it handled end to end? That's what we're here for.

Frequently asked questions

Which nutrient applies in the River Lugg SAC (River Wye system) catchment?

The Lugg and Wye are assessed for phosphorus, the nutrient behind the algal blooms that have badly degraded the river. A compliant scheme has to be neutral for phosphorus. NutrientMonkey locks the nutrient toggle to match the River Lugg catchment automatically, so you can't pick the wrong one.

Is the River Lugg calculator free to use?

Yes — selecting the catchment, entering your dwellings and watching the budget update in kg/year is completely free. You only pay £79 +VAT (£94.80 inc VAT) to export the planning-ready PDF report.

How is the River Lugg nutrient budget worked out?

It follows Natural England's published nutrient-budget methodology — waste water, current and future land use, SuDS, then the final budget with the ×1.2 (20%) precautionary buffer. For new homes the waste-water term does most of the work and is computed exactly.

Is this the official Natural England calculator?

No — it's a fast, planning-support assessment that implements NE's methodology, and the report says so. The official NE catchment calculator remains the statutory tool, and your figures should reproduce in it.

In a different catchment?

NutrientMonkey covers every Natural England catchment.

Or jump to another part of the country:

Or go back to the main NutrientMonkey calculator.

Wider planning support

Nutrient neutrality is rarely the only condition on a scheme. Our energy statements service and the wider SAP & compliance team cover the rest of the planning and Building Control picture — get a quote and we'll talk it through.

Got a scheme in the River Lugg SAC (River Wye system) catchment?

Work out its phosphorus budget on screen — the full Natural England methodology with the 20% buffer, free. You only pay when you export the planning-ready report.