Wastewater management is a crucial component of managing liquid waste. Getting both domestic wastewater and industrial wastewater to the correct wastewater treatment facilities is more difficult than most might imagine.
Added to this is the fact that wastewater treatment plants require well maintained and functional sewerage systems that can handle organic materials, recycled water, household waste, and any waste produced during industrial processes.
In short, there’s a lot that local councils need to do, and they can allieviate this workload by partnering with companies like Lee’s Environmental.
In this guide, we’ll cover the seven essential features of wastewater management and how an experienced partner like Lee’s Environmental helps facilities managers and EHS leaders stay audit-ready and efficient.
What is wastewater management?
Wastewater management is the end-to-end system that collects, treats, and safely disposes of or reuses wastewater.
It’s best seen as a robust program that helps to reduce environmental risk, meets licence conditions, and controls costs by preventing failures and unplanned downtime.
In a world where wastewater in the form of sewage waste is never going to go away, the management done by companies like Lee’s Environmental is absolutely essential.
1) Wastewater collection system
A reliable collection network moves wastewater from source to treatment with minimal leakage or infiltration. We like to think of it as the backbone of the entire waterwaste system.
Key components
- Lateral and branch sewers for local pick-up
- Main and trunk sewers for higher volumes
- Interceptor sewers to bypass sensitive areas
- Lift/pump stations to overcome elevation changes
Why it matters
- Prevents overflows and costly environmental incidents
- Reduces infiltration/inflow that can overload treatment
- Improves operator safety and system reliability
Practical tips
- Schedule CCTV inspections and leak testing.
- Map your assets and critical control points for audits.
- Maintain redundancy for pump stations and alarms.
2) Source identification and segregation for wastewater treatment plants
Not all wastewater is equal. Identifying sources and keeping streams separate cuts treatment load and risk.
If you’re interested in understanding the processes behind the waste management hierarchy, we wrote a whole blog on it called “The Liquid Waste Management Hierarchy“
Best practices
- Segregate trade waste (industrial) from sanitary flows.
- Keep stormwater out of the sewer — use dedicated drains.
- Label and isolate high-strength or hazardous streams.
- Maintain clear spill pathways to prevent cross-contamination.
Outcomes
- Lower volumes and treatment costs
- Simpler compliance reporting
- Reduced risk of permit breaches
3) Wastewater Systems Pretreatment
Pretreatment protects downstream processes by removing coarse solids, fats, oils and grease (FOG), and by adjusting pH or temperature before biological stages.
Common pretreatment measures
- Screens and grit removal
- Grease traps and dissolved air flotation (DAF)
- Equalisation tanks for flow and load smoothing
- pH correction and temperature control
Where Lee’s Environmental helps
- Grease trap servicing and compliance scheduling
- FOG collection and licensed transport
- Safe pump-outs for tanks and pits
4) Primary treatment
Primary treatment uses physical processes to settle suspended solids and remove scum, reducing organic load before biological treatment.
Typical equipment
- Primary clarifiers or sedimentation tanks
- Skimmers for scum and floating debris
- Sludge withdrawal systems
Benefits
- Reduced biochemical oxygen demand (BOD) entering secondary stages
- Smaller downstream footprint and energy use
- Improved reliability and effluent quality
5) Secondary (biological) treatment
Secondary treatment uses microorganisms to degrade dissolved and colloidal organics. It’s the workhorse stage for BOD and TSS reduction.
Common processes
- Activated sludge (including MBR/MBBR variants)
- Trickling filters and rotating biological contactors
- Constructed wetlands for low-load applications
Operational considerations
- Maintain aeration and sludge age targets
- Monitor dissolved oxygen, pH, and nutrient balance
- Manage waste activated sludge and odour
6) Tertiary treatment and disinfection
Technologies
- Nutrient removal (nitrification–denitrification, biological phosphorus removal)
- Filtration (sand, multimedia, membrane)
- Disinfection: UV, chlorination, ozonation
Selection tips
- Match process to licence limits and reuse goals
- Consider residuals management (e.g., dechlorination)
- Design for redundancy and validation checks
7) Disposal or reuse of treated effluent
After treatment, effluent must be discharged under licence conditions or reused safely to support circular-economy goals.
Pathways
- Surface water discharge under permit
- Irrigation or industrial reuse with quality monitoring
- Groundwater recharge where permitted
What good looks like
- Clear chain of custody and sampling plan
- Evidence-led reporting and record-keeping
- Contingency capacity for wet weather or peak loads
Essential practices to treat wastewater
Monitoring and control
- Continuous monitoring for flow, pH, turbidity, and key nutrients
- Routine lab testing aligned to licence conditions
- SCADA alarms and remote alerts for critical limits
Risk assessment and incident response
- Site-specific risk assessments and spill pathways mapping
- Emergency response plans with trained roles and drills
- 24/7 spill response to contain, recover, and remediate incidents — call Lee’s Environmental.
Operations and maintenance
- Preventive maintenance schedules for pumps, blowers, and clarifiers
- Tank, pit, and line cleaning to maintain hydraulic capacity
- Spare parts, lubrication, and condition-based monitoring
Quick example: cutting risk and cost with better segregation
A food and beverage site was breaching trade waste limits after storms. A short audit found stormwater cross-connection and undersized grease management. By separating stormwater, upsizing pretreatment, and introducing equalisation, the site reduced peak loads, eliminated breaches, and cut tanker call-outs. The lesson: identify sources first, then optimise treatment.
How Lee’s Environmental supports your wastewater management program
Lee’s Environmental solves hazardous and complex waste problems quickly and safely — protecting people, assets, and the environment. Our team helps you design, operate, and continuously improve each stage of wastewater management.
- Waste audits and compliance reviews — identify high-risk streams and quick wins
- Licensed collection and transport of sludge, FOG, and hazardous waste
- Treatment and recycling pathways that support circular-economy outcomes
- Chain-of-custody reporting and transparent documentation for audits
- 24/7 emergency spill response to minimise downtime and environmental harm
Ready to improve compliance, reduce costs, and build a resilient wastewater system?
Key takeaways
- Get the fundamentals right: collection, segregation, pretreatment, primary, secondary, tertiary, and safe disposal or reuse.
- Back them with monitoring, risk management, and rigorous O&M.
- Partner with a licensed operator to ensure safety, compliance, and traceability.
