Preventing Sanitary Sewer Overflows (SSOs) is becoming one of the most critical and expensive challenges for modern utility managers. Extreme weather events and rapidly aging underground infrastructure are placing an unprecedented strain on municipal budgets and sewer systems across the country.
For city leaders, utility directors, and financial officers, one of the most costly hidden challenges driving this crisis is surface rainwater infiltration.
The Growing Threat of Sanitary Sewer Overflows
When heavy rains hit, aging collection systems are put to the ultimate test. During severe weather, traditional, unsealed manholes act as open drains, allowing substantial volumes of surface rainwater to pour directly into sanitary sewer systems.
This system overload is the primary driver of Sanitary Sewer Overflows. When the volume of water exceeds the capacity of the collection system or the treatment plant, untreated sewage backs up into streets, local waterways, and even residential basements. The U.S. Environmental Protection Agency (EPA) estimates that up to 75,000 of these overflow events occur annually across the United States, posing severe environmental and public health hazards.
The Hidden Financial Toll on Municipal Budgets
Beyond the environmental damage, the financial toll of treating massive, unnecessary volumes of rainwater is staggering.
First, municipalities are forced to expend significant energy and resources pumping and treating clean stormwater that never needed treatment in the first place. This drastically increases operational expenses, wear and tear on mechanical equipment, and daily energy consumption.
Secondly, non-compliance with environmental regulations due to Sanitary Sewer Overflows can lead to devastating regulatory fines. These penalties divert crucial taxpayer funds away from other vital community projects and infrastructure improvements.
Why Traditional Manholes Fail During Severe Weather
Most legacy manhole covers feature pick holes and gaps that provide zero resistance to surface water. Even a single submerged manhole cover can allow thousands of gallons of inflow per hour into the sanitary sewer during a storm event.
When you multiply that single vulnerable access point by hundreds or thousands across a municipal grid, it becomes clear why treatment plants become overwhelmed so quickly. The collection system simply isn’t designed to handle combined sewage and heavy stormwater runoff.
A Fast, Cost-Effective Solution for Inflow Reduction
Fortunately, managing this excess inflow and mitigating Sanitary Sewer Overflows does not require years of highly disruptive roadway construction or massive capital expenditures.
The patented Sewer Sentry Inflow Reduction Technology (US Patent 8,851,781) offers a proven, rapid-deployment solution. By replacing highly vulnerable manhole covers with our advanced system—featuring tightly sealed openings and valve-reduced inflow—cities can instantly stop surface water from overwhelming their critical infrastructure.
3 Proven Ways This Solution Cuts Wastewater Costs
Upgrading your vulnerable access points with Sewer Sentry technology provides a return on investment that is both immediate and highly measurable. Here are three proven ways it cuts costs:
- Way 1: Massive Energy Savings. By heavily reducing the volume of excess rainwater entering the system, municipalities experience drastically shortened lift station pump run times. Monitored utility systems have seen a minimum 30% reduction in energy demands for water processing after installation.
- Way 2: Dramatic Overflow Prevention & Fine Avoidance. Stopping inflow at the source directly prevents system surcharges and the massive fines associated with them. In Louisiana’s West Ouachita Sewer District, for example, rainstorm-related Sanitary Sewer Overflows plummeted from an average of 40 per year down to just 1 single event after implementation.
- Way 3: Frictionless, Rapid Installation. The Sewer Sentry retrofit utilizes your existing manhole frame, saving massive amounts of labor capital. A standard three-man utility crew can install an average of 20 units per day. Taking as little as 15 minutes per unit, the installation requires absolutely no roadway construction, no repaving, and no complex permitting.
Stop Treating Rainwater Today
Municipalities can no longer afford the exorbitant costs of treating rainwater. By proactively upgrading vulnerable manhole access points, cities can immediately lower their operational costs, protect their citizens’ health, and safeguard their local environments from toxic sewage spills.
Don’t wait for the next major storm event to expose the vulnerabilities in your collection system.
Learn more about how to protect your infrastructure and cut costs at www.sewersentry.com.