Industrial Wastewater Statistics
- 22% of global water use is industrial, causing pollution with untreated wastewater, affecting groundwater and aquifers. Industries utilizing organic raw materials are the most polluting.
- In 2009, North American and European industries accounted for 50% of all water used, a stark contrast to 4-12% in developing countries.
Residential Wastewater Statistics
- Annually, there are 23,000 to 75,000 sanitary sewer overflows, leading to the release of 3 to 10 billion gallons of untreated waste.
- 19% of US homes’ septic systems potentially contribute to contamination.
- 14,748 public-owned water treatment plants serve 238.2 million people.
- 62% of indoor water use is from toilets, showers, and faucets.
Water Contamination Statistics
- 53% of US river/stream miles, 98% of Great Lakes’ shoreline miles, 71% of lake acres, and 79% of estuarine square miles are deemed unsuitable for at least one type of water use.
- 80% of global wastewater returns untreated into the ecosystem, with 1.8 billion people using contaminated water sources.
- Public treatment facilities annually process over 8 million tons of dry-weight sludge, consuming one-third of all its electricity use.
Wastewater Management Statistics
- The country’s sewer systems, totaling 600,000 miles, have a 50-year life expectancy. Treatment equipment lasts between 15 to 20 years.
- In 2012, the U.S. invested $102 billion in wastewater treatment plants, $95 billion on sewer pipe repairs and installations, and $48 billion in correcting combined sewer overflows.
- The country’s 19,000 wastewater collection systems, worth over $1 trillion, can significantly benefit from preventive maintenance.
Future Wastewater Management Statistics
- By 2010, over 400,000 companies worldwide had achieved ISO 14001 environmental management certification.
- California recycled approximately 650,000 acre-feet of water per year in 2010, with plans to increase this to 1-2 million acre-feet per year by 2020 and 2030, respectively.
- More than half of the treated biosolids are used for agricultural, forestry, urban parks, and reclamation purposes.
- Treated wastewater could boost water supply in coastal cities by 27%.
- Florida reuses approximately 719 million gallons of reclaimed water daily, leading the nation in water reuse.
