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  1. Home
  2. Inflow-and-Infiltration

Inflow-and-Infiltration

DPU-W Manhole Rehab Assessment NASSCO Report – DPU-W Sanitary Manhole Rehabilitation
Tony Conn
May 21, 2025
Read Article
Condition Assessment Clearwater Florida CCTV
Finding I/I in Clearwater, Florida
May 6, 2025
Grouting NapaSan
The Challenge of Manhole Infiltration in Napa
April 22, 2025
Lateral Rehab laterals hammerhead
How LED CIPP Kept ZO&O Railroad on Track
November 20, 2024
Condition Assessment Pipeline Rehabilitation
Leveraging Condition Assessment for Effective Pipeline Rehabilitation
October 31, 2024
Manhole Rehab Spraying OBIC
Finding an Effective Solution to Eliminate I&I

Warminster has a longstanding program to address the aging infrastructure and I&I issues....

October 23, 2024
Lateral Rehab Hoerr Construction lateral rehab
Leaking Laterals Gaining Attention as System Owners Look to Combat...

Unaddressed lateral pipes and interfaces affect a wastewater system by contributing a significant amount of I&I....

February 13, 2024
Manhole Rehab Pennsylvania Township Manhole Rehabilitation
Pennsylvania Township’s Manhole Rehabilitation Results in Large I&I Reduction

Not only were these manholes identified to be completely replaced but some were also located along a stream bed adding t...

October 24, 2023
Lateral Rehab lateral prep
Blueprint Columbus Addresses Lateral Rehab on the Private Side

Columbus chose to look at the situation from a different perspective....

October 19, 2023
Manhole Rehab manhole after grouting
Manhole Rehab – Squaring Off Against I&I with Injection Grouting

Everyone is familiar with the round covers of manholes. You walk past manholes in sidewalks near our homes or schools, y...

October 4, 2023
Pipe Inspection/Evaluation smoke testing
Identifying I&I Efficiently and Effectively with Smoke Testing

Could inflow and infiltration (I&I) be lurking beneath your city streets? Find out with smoke testing....

September 20, 2023
Canada Home Sewer System
Last Word – Trenchless Technology’s Role in Reducing Private Side...

With the advent of climate change, the risk of flooding basements due to sewers is increasing. However, basement floodin...

June 12, 2023
Grouting NASSCO pipe
NASSCO Report – Knowledge of Sewer Grout Behavior Advances

NASSCO’s Infiltration Control Grouting Committee (ICGC) is set to release the Test Cell Grouting Research White Pa...

April 25, 2023
Manhole Rehab Manhole rehab Figure 1
How to Properly Rehab a Manhole

Wastewater collections systems are comprised of gravity pipes, manholes, lift stations and force mains that gather used ...

March 14, 2023
Sewer flow monitoring
6 Ways to Identify I&I – Including 3 Warning Signs

Once you’re certain I&I issues are present, there are multiple methods you can rely on. Here are six proven methods....

October 17, 2022
Manhole Rehab sanitary sewer cover
NASSCO Report – Manhole Committee: ‘I Have Seen It All.’

In December 2013, I was 17 years into my career as a leak and concrete repair specialist — thought I’d seen ...

April 16, 2021
Pipe Relining infiltration and inflow
Comprehensive Rehabilitation: Measuring the Effectiveness of Public vs. Private I/I...

The City of Revere, Massachusetts entered into a consent decree (CD) with the U.S. Department of Justice that required t...

November 30, 2018
Features NASSCo Lateral Committee Story
How Big a Problem is Inflow and Infiltration?

What is the I/I load on our local wastewater treatment plant? Is it at a problem level and how much is it costing us? Ho...

December 15, 2017
Manhole Rehab
Tech Forum: Controlling I/I in Municipal Manholes

Each day millions of gallons of groundwater, surface water or storm water are flowing into the nation’s sewer syst...

March 22, 2017
Features
Charlotte’s Paw Creek Basin: Significant I/I Reduction Achieved through Basin-Wide...

Charlotte Water (formerly the Charlotte-Mecklenburg Utility Department), located in Charlotte, N.C., provides water and ...

September 23, 2015
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