The Farming Rules for Water came into force on 2 April 2018. They apply to all farmers and land managers in England, regardless of farm size, type, or whether you receive government payments.

Officially known as "The Reduction and Prevention of Agricultural Diffuse Pollution (England) Regulations 2018", these rules were introduced to protect water quality from agricultural pollution. Diffuse pollution occurs when pollutants from fertilisers, manures, sediment, and soil gradually enter watercourses through runoff, erosion, and leaching.

The Environment Agency enforces these rules through farm inspections. Over 15,000 inspections have been conducted since 2021. The most common breaches found are:

No recent soil testing (required on cultivated land)
No nutrient management plan
Spreading in prohibited conditions (waterlogged, frozen ground)
Buffer zone violations near watercourses

This guide explains each of the 8 rules, what you must do to comply, how the rules interact with NVZ requirements, and what happens if you breach them.

Overview of the 8 rules

The Farming Rules for Water consist of 8 rules grouped into two categories: 5 rules about managing fertilisers and manures, and 3 rules about managing soil and livestock.

Rule 1: Plan your fertiliser and manure applications

You must plan each application of organic manure or manufactured fertiliser on your agricultural land. This means assessing what nutrients your soil and crop need, and not applying more than necessary.

What the regulations require

Before applying any fertiliser or organic manure, you must:

Assess the crop's nutrient requirements (nitrogen, phosphorus, potassium)
Consider the nutrients already available in the soil
Account for the nutrient content of any organic manures you plan to apply
Plan applications so they do not exceed what the soil and crop need
Avoid raising soil phosphorus levels above target (typically Soil P Index 2)

How to create a nutrient management plan

Your plan should demonstrate that you have considered nutrient needs before spreading. It can be:

Written by hand: Field-by-field calculations showing crop requirements minus soil reserves minus manure nutrients equals fertiliser requirement
Using software: Tools like PLANET (free) or commercial farm management systems
From an agronomist: FACTS-qualified advisers can prepare plans for you

The key is having evidence that you planned BEFORE spreading. Records created after the event do not satisfy the planning requirement.

Rule 2: Use soil test results on cultivated land

If you are applying organic manure or manufactured fertiliser to cultivated agricultural land, you must take into account soil test results in your planning.

What counts as cultivated land

The soil testing requirement applies to:

Arable land (growing crops from seed)
Temporary grassland (grassland less than 5 years old)
Land that has been ploughed or disturbed by cultivation in the last 5 years
Land from which you have harvested a crop in the last 12 months

Permanent grassland that has not been cultivated for 5+ years is exempt from mandatory soil testing, but testing remains good practice for efficient nutrient management.

Why soil testing matters

Soil testing is the foundation of efficient nutrient management. Without knowing your soil's current nutrient status, you cannot plan applications accurately. Benefits include:

Cost savings: Avoid applying fertiliser your soil does not need
Environmental protection: Excess nutrients pollute watercourses
Yield optimisation: Understanding deficiencies helps target applications
Compliance: Demonstrable evidence for inspectors

How to get your soil tested

Sample correctly: Take 25 cores per field or management zone at consistent depth (0-15cm for arable, 0-7.5cm for grassland)
Choose a UKAS-accredited laboratory: Results from non-accredited labs may not be accepted
Request standard agricultural analysis: pH, P index, K index, Mg index as minimum
Keep results accessible: Store where you can produce them during inspections
Retest every 5 years minimum: More frequently if making large applications

Rule 3: Do not apply to waterlogged, frozen, or snow-covered ground

You must not apply organic manure or manufactured fertiliser when soil or weather conditions create a significant risk of pollution.

What "frozen for more than 12 hours" means

If the soil surface has been frozen for more than 12 hours in the previous 24-hour period, you must not spread. This is regardless of whether it has since thawed. The rationale is that frozen-then-thawed soil has reduced infiltration capacity.

Assessing "significant risk of pollution"

Beyond the specific prohibited conditions, you must assess whether there is a significant risk of pollution from any application. Consider:

Weather forecast: Rain expected within 24-48 hours significantly increases runoff risk
Field slope: Steeper slopes create faster runoff
Soil type: Heavy clay soils have higher runoff risk than sandy soils
Soil structure: Compacted soils cannot absorb applied materials
Proximity to water: Fields adjacent to watercourses are higher risk
Existing saturation: Already wet soils cannot absorb more liquid

The "full slurry store" is not an excuse

The Environment Agency is clear that inadequate storage capacity is not an acceptable reason for spreading in prohibited conditions. If your store is full and ground conditions are unsuitable, you are expected to have planned storage capacity to avoid this situation. This is a fundamental compliance requirement.

Rule 4: Apply fertiliser and manure away from water

You must maintain buffer zones when applying organic manure and manufactured fertiliser near watercourses.

Precision equipment reduces the buffer zone

You can apply organic manure within 6 metres (instead of 10 metres) of inland freshwaters or coastal waters if you use precision application equipment:

Trailing hose band spreader
Trailing shoe band spreader
Shallow injector (injects no deeper than 10cm below surface)
Dribble bar applicator
Other equipment designed for accurate application

The investment in precision equipment can be worthwhile if you have land close to watercourses, as it allows more productive use of that land while maintaining compliance.

Mapping your buffer zones

Good practice is to mark buffer zones on your farm maps. This helps:

Brief operators before spreading
Demonstrate compliance during inspections
Plan spreading routes to avoid buffer areas

Rule 5: Store manure safely

When storing organic manure on your land (field heaps or temporary storage), you must consider runoff risk.

Storage requirements

Distance from water: Store organic manure at least 10 metres from any inland freshwater or coastal water
Distance from drinking water sources: Store at least 50 metres from any spring, well, or borehole
Runoff risk: Do not store where there is a significant risk of runoff entering watercourses

Site selection for field heaps

When choosing where to place a temporary manure heap:

Avoid low-lying areas where water collects
Check there are no drains directly underneath
Consider slope direction - runoff will flow downhill
Avoid areas that flood during high rainfall
Rotate heap locations to prevent nutrient build-up

Permanent storage facilities

Constructed slurry stores and silage clamps must also comply with:

SSAFO Regulations: The Silage, Slurry and Agricultural Fuel Oil Regulations set construction standards for permanent storage
Capacity requirements: 5 months minimum slurry storage (6 months in NVZs)
Environmental permits: Large pig and poultry units require permits

Rule 6: Manage livestock near water

Livestock access to watercourses causes direct pollution and bank damage. The regulations impose specific requirements to prevent this.

Preventing poaching near water

You must prevent livestock compacting soil by trampling (poaching) within 5 metres of inland freshwaters or coastal waters. Poaching:

Destroys vegetation cover that protects banks
Compacts soil, reducing infiltration
Creates channels for polluted runoff into watercourses
Introduces faecal bacteria directly to water

Feeder placement

You must not place livestock feeders:

Within 10 metres of any inland freshwater or coastal water
Within 50 metres of any spring, well, or borehole

This includes water troughs, ring feeders, feed trailers, and any other feeding point that concentrates livestock activity.

Practical solutions

Fencing: Fence watercourses to exclude livestock, with alternative drinking water provision
Hardstanding: Create hard-surfaced areas around feeders to prevent poaching
Rotational grazing: Move stock before poaching becomes severe
Alternative water: Provide pasture pumps or piped water away from watercourses

Fencing watercourses and providing alternative drinking water can also qualify for Countryside Stewardship payments.

Rule 7: Prevent soil erosion

You must take reasonable precautions to prevent soil erosion and runoff caused by land management practices.

High-risk activities

Activities that can cause erosion include:

Cultivating up-and-down slopes (creates channels for water)
Leaving bare soil over winter
Late harvesting on wet ground
Over-working soil to fine tilths
Removing field boundaries that intercept runoff

Reasonable precautions

What counts as a "reasonable precaution" depends on individual circumstances, but includes:

Cultivation across slopes: Contour ploughing reduces water flow speed
Maintaining soil cover: Cover crops, crop residues, or rough seedbeds reduce erosion
Timing of cultivation: Avoid cultivating when soil is very wet
Preserving soil structure: Minimise passes and use appropriate machinery
Maintaining hedgerows and field margins: These intercept and slow runoff

Erosion after maize and potatoes

Late-harvested root crops and maize are particular erosion risks because harvest occurs in autumn when:

Ground is often wet
Heavy machinery causes compaction
Land is left bare through winter rainfall

Consider under-sowing cover crops, using tramlines to concentrate compaction, and sub-soiling to restore structure.

Rule 8: Manage soil compaction

You must take reasonable precautions to prevent pollution from soil compaction caused by livestock or machinery.

Why compaction matters

Compacted soil:

Cannot absorb rainfall - water runs off the surface
Carries sediment and pollutants to watercourses
Reduces crop yields and grass growth
Creates boggy conditions that worsen with livestock movement

Identifying compaction

Signs of compaction include:

Standing water after rain where it did not previously gather
Poor crop establishment in wheel lines
Roots growing sideways rather than downwards (check with spade)
Soil that is hard to dig or does not crumble
Increased runoff visible in field corners

Preventing compaction

Timing: Avoid working or grazing very wet fields
Tyre pressures: Use correct (lower) pressures for field work
CTF (Controlled Traffic Farming): Confine machinery to permanent tramlines
Livestock management: House or move stock before grazing causes severe poaching
Track placement: Install permanent tracks for regular heavy traffic

Remediation

If compaction has occurred, remediation options include:

Sub-soiling (when soil is dry enough)
Sward lifters for grassland
Deep-rooted break crops
Allowing natural recovery through wetting/drying and frost cycles

How Farming Rules for Water interact with NVZ requirements

If your land is in a Nitrate Vulnerable Zone (NVZ), you must comply with BOTH the Farming Rules for Water AND the additional NVZ regulations. NVZs cover approximately 55% of farmland in England.

Key additional NVZ requirements

NVZ rules add the following requirements on top of the Farming Rules for Water:

Closed periods: Specific dates when you cannot spread certain fertilisers and manures (varies by soil type and land use)
Nitrogen limits: Maximum 170 kg N/ha per year from organic manures (250 kg/ha with grassland derogation)
N-max limits: Maximum total nitrogen (organic + manufactured) that can be applied to each crop
Record keeping: Detailed records of all applications, kept for 5 years
Risk maps: Must produce and maintain maps showing fields, watercourses, and restricted areas
Storage capacity: Minimum 6 months slurry storage (higher than base Farming Rules recommendation)

Which rule applies?

Where requirements overlap, the stricter rule applies:

Spreading timing: NVZ closed periods ban spreading on specific dates regardless of conditions; Farming Rules ban spreading in bad conditions year-round
Buffer zones: Generally the same, but NVZ areas may have additional local requirements
Record keeping: Keep records for 5 years in NVZs (3 years general good practice)
Storage: 6 months in NVZ (5 months recommended elsewhere)

Check your NVZ status

Use the GOV.UK "Check if your land is in a nitrate vulnerable zone" interactive map. NVZs are reviewed and updated every 4 years, so land can be designated or de-designated. If your land has recently been designated, you have a transition period to build required storage capacity.

Link to cross-compliance and conditionality

If you receive payments under the Sustainable Farming Incentive, Countryside Stewardship, or other agri-environment schemes, breaching Farming Rules for Water can affect your payments through conditionality standards.

How it connects

Conditionality replaced cross-compliance from January 2024. It requires you to meet baseline environmental and animal welfare standards to receive scheme payments. Relevant GAEC (Good Agricultural and Environmental Condition) standards include:

GAEC 1: 2-metre buffer strips alongside watercourses (aligns with Farming Rules buffer zones)
GAEC 6: Minimum soil cover during winter (relates to soil erosion prevention)
SMR 1: Compliance with NVZ rules if in a designated area

Payment reductions

Breaching conditionality standards can result in:

Negligent breach: 1-5% payment reduction
Repeated breach: Higher percentage reductions
Intentional breach: Up to 100% payment loss plus potential scheme disqualification

Conditionality inspections may be combined with Farming Rules for Water inspections, as both are conducted by the RPA and Environment Agency.

Enforcement and penalties

The Environment Agency enforces the Farming Rules for Water through targeted farm inspections. The enforcement approach has evolved since the rules were introduced, with increased focus on achieving compliance outcomes.

The advice-led approach

The Environment Agency generally prioritises advice and guidance before formal enforcement. A typical enforcement sequence is:

Inspection identifies breach: Inspector notes non-compliance during farm visit
Advice given: You are told what changes are needed and by when
Follow-up: Re-inspection or request for photographic evidence of changes
Further action: If changes not made, escalation to formal enforcement

When immediate enforcement occurs

The advice-led approach is bypassed when:

Pollution is actively occurring (e.g., slurry reaching a watercourse)
There is imminent risk of serious pollution
The breach is intentional or reckless
Previous advice has been ignored
The farmer obstructs the inspection

What inspectors check

During a Farming Rules for Water inspection, expect checks of:

Soil test results (within 5 years on cultivated land)
Nutrient management plans (evidence of planning before spreading)
Fertiliser and manure application records
Slurry store condition and capacity
Buffer strips adjacent to watercourses
Livestock access to water
Feeder locations
Evidence of erosion or runoff
Field manure storage locations

Prosecution outcomes

Serious or repeated breaches can result in prosecution. Environmental offences carry unlimited fines, and courts follow the Sentencing Council's environmental offences guideline. Factors that increase penalties include:

Deliberate or reckless breach
Significant environmental harm
Financial gain from the breach
Previous enforcement history
Failure to cooperate with investigation

Good practice beyond compliance

The Farming Rules for Water set minimum legal requirements. Good practice often exceeds these standards and can deliver business benefits as well as environmental protection.

Soil health

Regular soil testing: Test every 3-4 years rather than the minimum 5
Organic matter monitoring: Track soil organic matter alongside nutrients
Cover cropping: Maintain living roots year-round where possible
Reduced tillage: Minimise soil disturbance to protect structure

Nutrient efficiency

Manure analysis: Laboratory test slurry nutrient content rather than using book values
Precision application: Variable rate technology matches application to field variability
Timing optimisation: Split applications to match crop uptake patterns
Incorporation: Incorporate high RAN manures within 12 hours to reduce ammonia loss

Water protection

Wider buffer zones: 6-metre buffers provide more protection than 2-metre minimum
Riparian planting: Trees and shrubs along watercourses filter runoff and stabilise banks
Watercourse fencing: Exclude all livestock, not just within 5 metres
Sediment traps: Install in high-risk areas to catch eroded soil before it reaches water

Funding for going further

Many actions that exceed Farming Rules compliance are eligible for environmental scheme payments:

SFI (when reopens): Payments for soil assessment, cover crops, integrated pest management
Countryside Stewardship: Buffer strips, riparian management, water management features
Capital grants: Fencing watercourses, livestock drinking points, slurry storage

Check you have valid soil test results

If you apply fertiliser or manure to cultivated land, you need soil test results showing pH, P, K, and Mg that are less than 5 years old. If your results are older or you have not tested, arrange sampling now. Use a UKAS-accredited laboratory.
Create or update your nutrient management plan

Before your next fertiliser or manure application, document your planning. Show the crop requirement, soil nutrient status, planned application rates, and how you calculated these. PLANET software is free and produces plans inspectors can understand.
Map your buffer zones and restricted areas

Walk your farm boundaries and map all watercourses, springs, wells, and boreholes. Mark the 2m, 6m, 10m, and 50m buffer zones. Brief all operators who spread fertiliser or manure on these restrictions.
Review slurry and manure storage

Calculate if your storage capacity is adequate for a closed period (winter months when you cannot spread). 5 months minimum, 6 months in NVZs. If inadequate, plan to build additional capacity or adjust livestock numbers.
Check livestock feeder positions

Ensure no feeders are within 10m of any watercourse or 50m of any spring, well, or borehole. Relocate any that are too close. Consider installing hardstanding to prevent poaching around feeders.
Assess erosion and compaction risk

Walk your fields and identify areas where erosion or compaction is occurring. Look for bare soil, rills, standing water, and poor crop establishment. Plan remediation before the issue worsens.
Check if your land is in an NVZ

Use the GOV.UK interactive map to check NVZ designation. If designated, ensure you are meeting the additional NVZ requirements (closed periods, nitrogen limits, enhanced record keeping). NVZs are reviewed every 4 years.

AGRICULTURE & FARMING Requirement

Organic farms: If you are certified organic, you must still comply with the Farming Rules for Water. Your certification body's standards may impose additional restrictions on nutrient application rates and timing that exceed the legal minimum. Coordinate your nutrient planning with both your organic certification requirements and Farming Rules compliance.

AGRICULTURE & FARMING Advantage

Farm assurance schemes: Red Tractor, LEAF Marque, and other assurance schemes incorporate Farming Rules for Water compliance into their standards. Your assurance audit may identify compliance gaps before Environment Agency inspectors do. Use assurance scheme resources and advice to strengthen your compliance position.

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