Water Quality Course

Lesson 1 • Physical Properties of Water

Examines temperature, turbidity, colour, odour, and taste as measurable physical indicators. Links physical properties to source identification and treatment needs.

Lesson 2 • Water Quality Classification Systems

Presents frameworks for classifying water by intended use, including drinking, agricultural, recreational, and ecological standards. Prepares students to apply classification in field contexts.

Lesson 3 • Water as a Global Resource

Covers the hydrological cycle, global freshwater distribution, and human dependence on water. Provides context for why quality management is critical to public health and ecosystems.

Lesson 4 • Chemical Properties and Parameters

Introduces pH, hardness, alkalinity, dissolved oxygen, and major ions as chemical quality indicators. Connects chemical balance to corrosion, scaling, and aquatic life support.

Lesson 1 • Sample Collection Techniques

Teaches grab, composite, and passive sampling methods for surface water, groundwater, and wastewater. Proper technique prevents contamination and ensures representativeness.

Lesson 2 • Sample Preservation and Chain of Custody

Details preservation methods, container selection, holding times, and chain-of-custody documentation. Ensures legal and scientific defensibility of analytical results.

Lesson 3 • Quality Assurance in Field Operations

Covers field blanks, duplicates, and equipment blanks as quality control measures. Integrates QA practices into routine sampling to detect and minimise error.

Lesson 4 • Sampling Programme Design

Covers objectives-based sampling design, site selection, frequency, and spatial coverage. Connects programme design to the quality of data used in regulatory and management decisions.

Lesson 1 • Physical and Chemical Analysis Methods

Covers gravimetric, titrimetric, and colorimetric methods for TSS, hardness, alkalinity, and nutrients. Each method is linked to its corresponding quality parameter from Chapter 1.

Lesson 2 • Trace Contaminant Detection

Introduces atomic absorption, ICP-MS, and GC-MS for metals, pesticides, and emerging contaminants. Trace analysis expands detection capability beyond routine parameters.

Lesson 3 • Microbiological Testing Methods

Teaches membrane filtration, multiple-tube fermentation, and enzyme substrate methods for indicator bacteria. Microbiological results directly inform public health risk decisions.

Lesson 4 • Laboratory Quality Control Practices

Covers method blanks, calibration standards, matrix spikes, and control charts for analytical QC. Systematic QC ensures data reliability and supports regulatory acceptance.

Lesson 1 • Emerging and Trace Contaminants

Introduces pharmaceuticals, microplastics, PFAS, and endocrine disruptors as contaminants of growing concern. Emerging contaminants challenge existing monitoring and treatment frameworks.

Lesson 2 • Point Source Contamination

Examines industrial effluents, municipal wastewater discharges, and stormwater outfalls as discrete pollution sources. Understanding point sources is essential for permit-based regulatory control.

Lesson 3 • Nonpoint Source Contamination

Covers agricultural runoff, urban stormwater, atmospheric deposition, and land-use impacts on water quality. Nonpoint sources require landscape-scale management strategies.

Lesson 4 • Contaminant Fate and Transport

Covers adsorption, degradation, dilution, and bioaccumulation as processes governing contaminant behaviour. Fate and transport modelling informs risk assessment and remediation planning.

Lesson 1 • Softening and Corrosion Control

Covers lime-soda softening, ion exchange, and pH adjustment to manage hardness and distribution system corrosion. Corrosion control protects infrastructure and prevents metal leaching.

Lesson 2 • Filtration Technologies

Covers rapid sand, slow sand, membrane, and multimedia filtration for particle and pathogen removal. Filter selection depends on source water quality and treatment objectives.

Lesson 3 • Disinfection Methods and Byproducts

Teaches chlorination, UV irradiation, ozonation, and chloramination for pathogen inactivation. Disinfection byproduct formation must be balanced against microbial risk reduction.

Lesson 4 • Coagulation, Flocculation, and Sedimentation

Explains chemical coagulation, floc formation, and gravity settling as primary solids removal steps. These processes reduce turbidity and particle-bound contaminants before filtration.

Lesson 1 • Biological Secondary Treatment

Teaches activated sludge, trickling filters, and sequencing batch reactors for BOD and suspended solids removal. Biological processes rely on microbial communities that require careful operational control.

Lesson 2 • Water Reuse and Reclamation

Introduces fit-for-purpose treatment for agricultural, industrial, and potable reuse applications. Reuse reduces freshwater demand and requires meeting stringent quality criteria.

Lesson 3 • Sludge Management and Biosolids

Explains thickening, digestion, dewatering, and beneficial use of biosolids generated during treatment. Proper sludge management reduces disposal costs and recovers resources.

Lesson 4 • Preliminary and Primary Treatment

Covers screening, grit removal, and primary sedimentation as the first stages of wastewater processing. These steps protect downstream equipment and reduce organic and solids loads.

Lesson 1 • Reporting and Decision Support

Teaches preparation of monitoring reports, exceedance notifications, and data visualisation for diverse audiences. Effective reporting translates technical findings into actionable management responses.

Lesson 2 • Monitoring Network Design

Covers objectives-driven network design, station placement, parameter selection, and monitoring frequency. A well-designed network maximises information value relative to cost.

Lesson 3 • Data Quality Evaluation

Covers data quality objectives, precision, accuracy, completeness, and comparability as evaluation criteria. Data quality assessment determines whether results are fit for their intended use.

Lesson 4 • Continuous and Remote Monitoring

Introduces sensor networks, data loggers, telemetry, and remote sensing for real-time water quality surveillance. Continuous monitoring enables rapid detection of contamination events.

Lesson 1 • Water Safety Plans

Introduces the water safety plan framework as a proactive, risk-based approach to drinking water management. Water safety plans integrate hazard analysis with operational monitoring and corrective actions.

Lesson 2 • Ecological Risk and Watershed Management

Applies ecological risk assessment to aquatic ecosystems and links findings to watershed-scale management. Protecting ecological integrity sustains the services that water bodies provide.

Lesson 3 • Risk Characterisation and Tolerable Limits

Combines hazard and exposure data to estimate cancer and non-cancer risks and compare them to acceptable benchmarks. Risk characterisation guides the setting of water quality guidelines.

Lesson 4 • Hazard Identification and Characterisation

Covers identification of chemical, microbial, and physical hazards and their dose-response relationships. Hazard characterisation is the first step in quantifying risk to human and ecological receptors.