According to an article published by Water Technology Magazine (WaterTechOnline.com), the average cost to treat 1000 gallons of wastewater is $2.06. Let’s take a look at how that $2.06 adds up over time. A 10 gallon per minute leak in a manhole for example equals 5,256,000 gallons of water leaked per year. That adds up to a $10,827.36 per year ($902.28 per month) wastewater treatment cost resulting from that leak alone.
Let’s compare that to the average one-time cost to stop all the leaks in a 4-foot diameter x 8-foot tall manhole: $3000 or so depending on local labor rates. This relatively low repair cost is recouped in less than 4 months, considering the monthly wastewater treatment cost of $902.28. This equals $7,000 - $8,000 cost avoidance in the first year alone. In subsequent years, you’re saving the full $10,827.36.
Now multiply those number by all the manholes in your district with large leaks. The numbers are truly staggering.
For more information on infrastructure infiltration repair, see our blog post Mitigating I & I – An Ounce of Prevention is Worth a Pound of Cure. If you’d like to discuss I & I issues with our experienced tech support team, call 404-618-0438.