Wastewater
A 110,000-population works cut treatment energy without new capital plant
Independent monitoring recorded 34% less energy to treat the load, alongside improved nutrient removal, with no new infrastructure required.
The challenge
The deadlines are fixed, the penalties are automatic, and the energy bill keeps rising
Water and wastewater operators are carrying permits they cannot always meet, on plant they cannot easily take offline, under an enforcement regime that no longer waits.
Phosphorus loadings from treated wastewater must fall by half by 31 January 2028, with around 880 works facing tighter consents. Storm overflows must drop to an average of roughly 16 spills per site by 2029. The sector has committed to operational net zero by 2030, twenty years ahead of the statutory target.
Missing any of it is no longer a slow conversation with the regulator. Fines are now automatic and unlimited, and in 2024 reached GBP 104m on a single operator. At the same time energy is the dominant operating cost at a treatment works, with aeration alone accounting for between 45% and 75% of the energy a plant uses.
The conventional answer, a multi-million-pound civil expansion, is the one you can least afford. AMP8 capital is already committed to compliance, and the works still has to keep running while you upgrade it.
Our approach
How we meet the obligation without the capital programme
We improve the performance of the assets you already operate, so they meet tightening consents and carbon targets without new civil infrastructure and without taking the works offline.
Treatment performance, energy use and chemical load are engineered into the process you already run, not bolted on as a new plant. The result is a works that does more, on the same footprint, with lower running cost and a smaller carbon position.
You carry none of the integration. We bring every capability together as a single accountable partner, and every outcome we put forward is backed by a full-scale reference site you can scrutinise before you commit a pound of AMP8 budget.
What you get
Lower cost, less risk, every obligation met
Cost
Take energy out of treatment
Cut the single largest controllable cost at the works. Independent monitoring recorded 34% less energy to treat the load at a 110,000-population plant, with no new infrastructure required.
Cost
Relieve capacity and cut maintenance
Handle more load on the works you already have, with up to around 30% less sludge to deal with and recurring blockages, fats, oils, grease and odour brought under control. Influent and process dependent.
Risk
Bring effluent back into consent
Return an out-of-consent works to compliance without capital works, verified by an independent laboratory and monitored by the environmental regulator. The permit risk comes off your balance sheet.
Obligation
Meet phosphorus and storm-overflow targets
Hit tightening nutrient consents and spill obligations on the assets you run today, so the 2028 and 2030 deadlines are met without a multi-year civil build.
Obligation
Move towards operational net zero
Recover more energy from existing anaerobic digestion, typically 10 to 20% more biogas in field trials, and harness the pressure already in your network, with measurable, reportable carbon reduction towards 2030.
Cost
Reduce chemical dependency
Lower your reliance on dosing chemistry and the cost and scrutiny that come with it, while holding effluent quality where your consent needs it.
Evidence
Proven at full scale, and independently verified
Independently measured, never merely claimed.
34%Less energy to treat the load at a 110,000-population wastewater works, measured by an independent consultancy, with no new plant
Back in consentAn out-of-consent works returned to compliance with no capital works, verified by an independent laboratory and monitored by the regulator
0 cfu/gRecurring waterborne pathogens eliminated in four days in a major UK water system, confirmed by a UKAS-accredited laboratory
Reference sites
Full-scale results you can scrutinise
Compliance
The compliance you carry
The UK environmental and safety duties that commonly reach water & wastewater. Open any one for what it requires, the deadlines, what is at stake, and how to evidence control. Every entry is sourced.
ACoP L8RiskObligationLegionella control in water systems (ACoP L8 and HSG274)
What you must doAppoint a competent Responsible Person, assess the risk in writing, put a control scheme in place, monitor it, and keep records. A court can treat failure to follow the ACoP as evidence of breaking the law.
Applies toAny business with a water system that could create a risk of exposure to Legionella: hot and cold water services, cooling towers, spa pools, calorifiers and more.
When it bitesContinuously, wherever a water system could let Legionella grow and create breathable droplets.
DeadlinesOngoing (continuous duty)
What is at stakeProsecution under the Health and Safety at Work Act with unlimited fines. One spa-pool outbreak that caused three deaths led to a fine of GBP 1,000,000.
How to evidence itA current written risk assessment, up-to-date monitoring and temperature records, and, increasingly, independent laboratory verification that the system is under control.
Legal basisHealth and Safety at Work etc. Act 1974 (s2 and s3) and COSHH 2002, with the Approved Code of Practice L8 (special legal status) and HSG274. Issued by Health and Safety Executive.
Turn a continuous, personal Legionella duty into a defensible compliance file, with waterborne risk brought under control and independently confirmed.
WFD Regs 2017ObligationRiskWater Environment (Water Framework Directive) Regulations 2017
What you must doDo not cause deterioration of water-body status and comply with conditions, derived from River Basin Management Plan objectives, that flow through your permits and licences.
Applies toOperators whose abstraction, discharge or physical works could affect the status of a river, lake or groundwater body.
When it bitesWhen an activity could cause deterioration of water-body status; River Basin Management Plan objectives feed into permit decisions.
DeadlinesOngoing (River Basin Management Plan cycles)
What is at stakeNo standalone penalty in most cases; enforced through the permits and licences that carry the conditions.
How to evidence itPermit and licence compliance records that show no deterioration and that conditions are met.
Legal basisWater Environment (Water Framework Directive) (England and Wales) Regulations 2017 (SI 2017/407). Issued by Environment Agency / Natural Resources Wales / Defra.
Reg 31ObligationRiskRegulation 31: materials and products in contact with drinking water
What you must doUse only approved substances, products and processes in public supplies; manufacturers must obtain Regulation 31 approval before water companies use a product.
Applies toManufacturers, specifiers and contractors using chemicals, products or materials in contact with public drinking water from source to delivery.
When it bitesWhen a substance, product or process is to be used in a public water supply.
DeadlinesOngoing (approval precedes use)
What is at stakeAn approval-and-compliance mechanism overseen by the Drinking Water Inspectorate, enforced through the Water Industry Act 1991 regime for water companies; there is no separate Regulation 31 penalty figure.
How to evidence itEvidence that materials and chemicals specified hold current Regulation 31 approval.
Legal basisRegulation 31 of the Water Supply (Water Quality) Regulations 2016 (as amended). Issued by Drinking Water Inspectorate / Secretary of State.
Storm overflowsObligationCostRiskStorm overflows and phosphorus targets (Environment Act 2021)
What you must doReduce spill frequency and phosphorus loading to the statutory targets, with a roughly GBP 12bn programme to cut spills, and a 50% phosphorus-loading cut by 2028 and 80% by 2038.
Applies toWater and wastewater companies, and the works and networks that discharge to rivers and the sea.
When it bitesAcross the asset base, against statutory reduction and phosphorus-loading targets.
Deadlines2028 and 2038 (phosphorus); 2029, 2035 and 2050 (spills)
What is at stakeEnforced by the Environment Agency and Ofwat, with penalties for breaches and a strong public and political spotlight.
How to evidence itMonitored spill data, nutrient-removal performance, and delivery against the investment programme.
Legal basisEnvironment Act 2021, the Storm Overflows Discharge Reduction Plan, and the Environmental Targets (Water) (England) Regulations 2023. Issued by Defra / Environment Agency / Ofwat.
Hit tightening discharge and nutrient targets while cutting the energy and chemicals it takes to get there.
EPR 2016ObligationRiskCostEnvironmental Permitting (England and Wales) Regulations 2016
What you must doHold the correct permit or registered exemption and operate within its conditions, applying best available techniques where required, with records and reporting.
Applies toOperators of regulated facilities: installations, waste operations, water-discharge and groundwater activities, and certain air-emission activities.
When it bitesBefore carrying on a regulated activity, such as discharging to controlled waters or operating combustion or waste plant.
DeadlinesOngoing (permit precedes the activity)
What is at stakePollution offences carry unlimited fines and up to five years' imprisonment. Civil sanctions include variable monetary penalties, which became unlimited when the previous GBP 250,000 cap was removed in December 2023.
How to evidence itThe correct permit in force, monitoring to its conditions, an environmental management system, and an incident log.
Legal basisEnvironmental Permitting (England and Wales) Regulations 2016 (SI 2016/1154), as amended. Issued by Environment Agency / Natural Resources Wales / local authorities.
Stay inside permit conditions and reduce the load your processes put to water and air, lowering both risk and cost.
AbstractionObligationCostWater abstraction licensing and reform (Environment Act 2021)
What you must doHold an abstraction licence, stay within its volumes and conditions, and prepare for licences to become revocable Environmental Permits by 2028.
Applies toOperators abstracting water from rivers, lakes or groundwater above the licensable threshold, including farms, food sites and large estates.
When it bitesOn abstracting above the threshold; licences are converting to revocable Environmental Permits.
DeadlinesPermit conversion by 2028
What is at stakeEnforced by the Environment Agency, with the prospect of tighter or revoked entitlements in stressed catchments.
How to evidence itMetered abstraction within licensed volumes, and a plan to reduce reliance where catchments are under pressure.
Legal basisWater Resources Act 1991 abstraction licensing, reformed under the Environment Act 2021. Issued by Environment Agency / UK Government.
Do more with less abstracted water, protecting both your entitlement and your running cost as catchments tighten.
Reservoirs ActObligationRiskReservoirs Act 1975 (reservoir safety)
What you must doRegister the reservoir, appoint qualified panel engineers to inspect and supervise it, maintain and inspect the structure, and hold an on-site emergency flood plan.
Applies toOwners and operators of large raised reservoirs holding more than 25,000 cubic metres above the surrounding land, including estates, farms, industrial sites and water companies.
When it bitesOn constructing, altering or operating a qualifying reservoir.
DeadlinesRegistration within 28 days of the final certificate; ongoing inspection
What is at stakeOffences under the Act, such as failing to register or to appoint engineers, are punishable by fines, with the most serious offences carrying an unlimited fine.
How to evidence itRegistration on record, panel-engineer inspection reports, maintenance records and a current emergency plan.
Legal basisReservoirs Act 1975 and the Reservoirs Act 1975 (Capacity, Registration, Prescribed Forms, etc.) (England) Regulations 2013. Issued by Environment Agency.
ESOSObligationCostEnergy Savings Opportunity Scheme (ESOS)
What you must doAudit total energy use across buildings, processes and transport, identify cost-effective savings, and report compliance, with an action plan and progress updates.
Applies toLarge undertakings that meet the size threshold (broadly large companies and groups).
When it bitesEvery four-year compliance phase, on qualifying organisations.
DeadlinesPhase 4 compliance by 5 December 2027; four-yearly thereafter
What is at stakeCivil penalties from the Environment Agency for failing to comply or report.
How to evidence itA completed ESOS assessment, a board-signed-off report, an action plan, and progress against it.
Legal basisThe Energy Savings Opportunity Scheme Regulations 2014 (as amended). Issued by Environment Agency.
Turn the audit you must do anyway into delivered savings, by cutting the energy your water, air and process systems burn.
MCPDObligationCostMedium Combustion Plant Directive and Specified Generators
What you must doHold the right permit, meet emission limits for sulphur dioxide, nitrogen oxides and dust, and monitor and report emissions.
Applies toOperators of medium combustion plant rated 1 to 50 MW thermal, including boilers, engines, CHP and standby or peaking generators.
When it bitesOn operating an in-scope plant, with permitting and emission limits phased by size and age.
DeadlinesExisting plant: 2024 for above 5 MW, 2029 for 1 to 5 MW; new plant before operation
What is at stakeEnforced under the Environmental Permitting Regulations, with unlimited fines and civil sanctions.
How to evidence itThe permit in force, emission monitoring to its limits, and maintenance records.
Legal basisMedium Combustion Plant and Specified Generator provisions of the Environmental Permitting Regulations 2016 (transposing Directive (EU) 2015/2193). Issued by Environment Agency / Natural Resources Wales.
UK ETSObligationCostUK Emissions Trading Scheme (UK ETS)
What you must doHold a greenhouse gas emissions permit, monitor and report verified emissions each year, and surrender allowances equal to those emissions.
Applies toOperators of installations combusting fuels above 20 MW thermal, energy-intensive industry, aviation, and larger sites with significant standby generation.
When it bitesAnnually, on in-scope installations, to monitor, report and surrender allowances.
DeadlinesAnnual compliance cycle; second allocation period from 2027
What is at stakeCivil penalties under the scheme: an excess emissions penalty of GBP 100 for each allowance not surrendered (uprated for inflation, with the allowances still falling due), a GBP 20,000 fixed penalty plus GBP 1,000 a day for failing to return allowances, and an under-reporting penalty based on the annual carbon price.
How to evidence itA current emissions permit, a verified annual emissions report, and surrendered allowances on record.
Legal basisThe Greenhouse Gas Emissions Trading Scheme Order 2020 (as amended), under the Climate Change Act 2008. Issued by UK ETS Authority / Environment Agency.
Duty of careObligationRiskWaste duty of care, the waste hierarchy and hazardous waste
What you must doStore waste securely, transfer it only to authorised persons with the correct transfer or consignment notes, and apply the waste hierarchy of prevent, reuse, recycle, recover, dispose.
Applies toEffectively every commercial and industrial operator that produces, holds, carries or transfers controlled waste.
When it bitesContinuously, whenever waste is held or transferred; hazardous waste triggers extra duties.
DeadlinesOngoing (continuous duty)
What is at stakeBreach of the duty of care is an offence with an unlimited fine on conviction.
How to evidence itWaste transfer and consignment notes, evidence the carrier and destination are authorised, and a record of how the hierarchy is applied.
Legal basisEnvironmental Protection Act 1990, s34; the Waste (England and Wales) Regulations 2011; the Hazardous Waste (England and Wales) Regulations 2005. Issued by Environment Agency / Defra.
Before you commit
Proven at full scale, before you commit a pound of AMP8 budget
The first question every operations and engineering team asks is the right one: is it proven at full scale, and where is the reference site?
So we start there. Every outcome is evidenced at a comparable full-scale works, independently verified, and quantified for your site before you commit. It works around live operations, so the works stays in service, and it is designed to fit your existing WINEP and AMP8 procurement rather than sit outside it. We begin with a single works under pressure, prove the result, then scale.
Every reference and figure is independently verified.
Questions answered
Will this work on a live works without taking it offline?
Yes. The approach is designed to work around live operations, so the works stays in service while performance, energy use and chemical load improve. There is no requirement to take the plant offline or to retrofit new civil infrastructure.
Is it proven at full scale, and independently verified?
Yes. Outcomes are evidenced at comparable full-scale works, including 34% less treatment energy at a 110,000-population plant under independent monitoring, and an out-of-consent works returned to compliance with results verified by an independent laboratory and monitored by the environmental regulator.
Does it require new infrastructure or capital works?
No. Outcomes are delivered by improving the assets you already operate, not by building new plant. That is what lets you meet tightening consents and net zero targets without committing a multi-year civil programme.
Can it help us meet the 2028 phosphorus target and tightening consents?
Yes. The legally binding 50% phosphorus reduction by 31 January 2028, and the tighter consents around 880 works now face, are exactly the obligations the approach is built to meet, on the assets you run today rather than through a capital expansion.
How does it contribute to operational net zero by 2030?
It reduces treatment energy, recovers more energy from existing anaerobic digestion, and lowers chemical use, producing measurable, reportable carbon reductions that count towards the sector's operational net zero 2030 commitment.
Does it fit our AMP8 and WINEP procurement?
Yes. It is designed to fit your existing AMP8 and WINEP frameworks and standards, and to integrate with planned schemes rather than sit outside them, with a single accountable partner carrying the integration.
Bring us one works that is under pressure
Tell us the consent, the cost or the deadline you are facing. We will quantify the outcome for that works, in confidence, before you commit.
Speak to the Team
Tell us your challenge
Tell us the cost, the risk or the obligation you are facing. A senior member of our team will respond, in confidence, with how we would help.
Every enquiry is handled in strict confidence.