Posts Tagged ‘Inflow and Infiltration’
Creating Wastewater System Capacity to Support Housing: Private-Side Inflow and Infiltration Reduction Success
Murari Raghavan (mraghavan@civi.ca), B.Tech, M.Sc., Civica Infrastructure Inc. Matthew Malone (mmalone@civi.ca), M.Sc., MBA, Civica Infrastructure Inc. Introduction The impacts of reduced sewer conveyance and treatment capacity in wastewater systems caused by Inflow and Infiltration (I&I), bring about problems including increased risk of basement flooding, restricted new urban development, increased wastewater operation and maintenance costs, and…
Read MoreCase Studies: Wet Weather Inspections to Find Inflow and Infiltration (I&I) – Part 2
The first part of this webinar delved into the diverse factors contributing to the problems of inflow and infiltration (I&I), inflow and infiltration methods, and onsite inspections, with a focus on field inspections conducted during wet weather conditions. This second part outlines some specific cases of wet weather inspections that Civica conducted. Case Study 1:…
Read MoreWet Weather Inspections to Find Inflow and Infiltration (I&I) – Part 1
Unidentified sewer problems and inflow and infiltration (I&I) can result in sewage back-ups, spills, and overflows as well as overall reduced system capacity. Civica specializes in a wide range of field and consulting services including flow monitoring, CCTV inspections, maintenance hole inspections, smoke & dye testing, and other wet-weather inspections to help identify, analyze, and…
Read MoreFlow Monitoring and Its Role in Inflow and Infiltration (I&I) Studies (Part 2)
In the previous post, an overview of Civica’s fourth webinar in the Flow Monitoring Webinar Series was provided. Part 1 explained the role rainfall monitoring plays in inflow and infiltration (I&I) studies. Part 2 will take a deeper look into flow analysis, including dry-weather flow (DWF) analysis and wet-weather flow (WWF) analysis. Flow Analysis When…
Read MoreFlow Monitoring and Its Role in Inflow and Infiltration (I&I) Studies (Part 1)
In the first three installments of the Flow Monitoring Webinar Series, Civica discussed the various ways to make existing flow monitoring systems better, through available technology and improved data quality. Now, part four of this five-part series explores the role flow monitoring plays in inflow and infiltration (I&I) studies. An overview of the webinar will…
Read MoreCase Studies for the Identification and Quantification of Sanitary Maintenance Hole Inflow and Infiltration (I&I)
Sanitary sewer capacity can be quickly overwhelmed during large rainfall or snowmelt events. Maintenance holes (MH) —even ones not in low-lying areas—can become submerged and produce an inflow of water to sanitary systems. Inflow and infiltration inspections are designed to assess sanitary sewer capacity analysis, giving you a more comprehensive picture of your wastewater asset…
Read MoreMethodology for the Identification and Quantification of Sanitary Maintenance Hole Inflow and Infiltration (I&I)
During heavy rains and snowmelt, streets are designed specifically to channel water into ponding areas. In some circumstances, however, the amount of rainfall can be such that maintenance holes become submerged, exceeding the sanitary sewer capacity and causing floods. An inflow and infiltration inspection can help quantify storm water inflows through submerged maintenance holes, allowing…
Read MoreChallenges of the New Subdivision Flow Monitoring to Assess Performance of Inflow and Infiltration (I/I) Prevention
The innovative New Subdivision I/I Prevention Program has yielded great results for multiple municipalities when it comes to infiltration and inflow (I/I) reduction. That said, it doesn’t mean that the new subdivision I/I prevention plan is without its challenges. Let’s take a look at some of those challenges laid out in the flow monitoring plan.…
Read More