Municipalities across North America have widespread problems with Inflow and infiltration (I&I). Inflow is in reference to stormwater that invades sewer systems. Infiltration is in reference to groundwater infiltrating manholes, lift stations, pipes, and other sanitary system components. While there are a few solutions on the market for mitigating inflow, this article is primarily focused on mitigating infiltration with polyurethane grout.
What are Sanitary Sewer Overflows (SSOs)?
According to EPA.gov, sanitary sewer overflows (SSOs) can be found all over the country and pose many dangers to public health. They estimate there are at least 23,000 - 75,000 SSOs per year in the United States alone. Because SSOs contain raw sewage they carry bacteria, viruses, protozoa (parasitic organisms), helminths (intestinal worms), and inhaled molds and fungi. Because of this, they may cause diseases ranging in severity from mild gastroenteritis (causing stomach cramps and diarrhea) to life-threatening ailments such as cholera, dysentery, infections hepatitis, and severe gastroenteritis.
Massive Amount of Funds in Place for Sewer & Stormwater Infrastructure Repair
Thankfully, hundreds of billions of dollars are budgeted for addressing these issues according to EPA.gov. The CWSRF (Clean Water State Revolving Fund) was created by the 1987 amendments to the Clean Water Act (CWA) as a financial assistance program for a wide range of water infrastructure projects. This program is a key relationship between the EPA and states that replaced EPA's Construction Grants program. States now have the ability to fund a range of projects that address their urgent water quality issues.
A Simple Plan for Mitigating Sanitary/Stormwater System Infiltration
The grouting plan shown below provides the highest return on investment:
- Inspect lift stations and manholes.
- Identify obvious and large leaks.
- Point repair with polyurethane grout.
Typically, a two-person crew can quickly mitigate 10-30 gallons per hour in less than a day. Just this one day’s work will usually equate to $30,000 a year in savings depending on local treatment costs. For more information on mitigating infiltration with polyurethane grouts, call the Alchemy-Spetec technical support team at 404-618-0438 today.