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Sewer losses and interactions with groundwater quality.
1Urban Pollution Research Centre, Middlesex University, London, UK.
Summary
Inflow/infiltration (I/I) and infiltration/exfiltration (I/E) impact sewer and groundwater. Current evidence suggests I/E effects are not substantial, but long-term sewer sustainability requires caution.
Area of Science:
- Environmental Engineering
- Hydrogeology
- Urban Water Management
Background:
- Inflow/infiltration (I/I) and infiltration/exfiltration (I/E) are dynamic processes affecting sewer and groundwater systems.
- Understanding these interactions is crucial for managing urban water infrastructure.
Purpose of the Study:
- To identify critical sewers in the UK and assess the incidence and condition of I/E.
- To evaluate chemical and bacterial methods for quantifying I/E.
- To determine the impact of I/E on sewer performance and urban groundwater pollution.
Main Methods:
- Identification of critical sewers in the UK.
- Application of chemical and bacterial methods to quantify I/E.
- Analysis of existing evidence on I/E impacts.
Main Results:
- The incidence and condition of critical sewers were identified.
- Chemical and bacterial methods were used to quantify I/E.
- Existing evidence indicates I/E impacts are not substantial.
Conclusions:
- While current evidence suggests limited substantial impacts, long-term sewer sustainability warrants a cautious approach regarding I/E.
- Further research may be needed to fully understand the long-term implications of I/E on urban water systems.