Combined sewer

{
  "id": "MLC-T-ENV-005653",
  "term": "Combined sewer",
  "field": "Environment",
  "term_source": "Combined Sewer",
  "definitions": [
    "1. Sewer system that transports both storm runoff and sewage through one large pipe to a sewage treatment plant.\n\n2. A sewer that transports surface runoff and human domestic wastes (sewage), and sometimes industrial wastes. Wastewater and runoff in a combined sewer may occur in excess of the sewer capacity and cannot be treated immediately. The excess is frequently discharged directly to a receiving stream without treatment, or to a holding basin for subsequent treatment and disposal.\n\n3. A sewer receiving intercepted surface (dry- and wet-weather) runoff, municipal (sanitary and industrial) sewage, and subsurface waters from infiltration.\n\n4. Sewer that is designed as a sanitary sewer and a storm sewer.",
    "A sewer system that carries both sewage and storm-water runoff. Normally, its entire flow goes to a waste treatment plant, but during a heavy storm, the volume of water may be so great as to cause overflows of untreated mixtures of storm water and sewage into receiving waters. Storm-water runoff may also carry toxic chemicals from industrial areas or streets into the sewer system."
  ],
  "subject": [
    "Water",
    "Ecosystems"
  ],
  "references": [
    "Nearshore Terrestrial Ecosystems Glossary",
    "Drinking Water Technical & Legal Terms",
    "Urban Watershed Management Research Terminology",
    "40 CFR 35.2005 (CFR 2018)",
    "Aquatic Biodiversity Glossary; Terms of Environment"
  ],
  "url": "https://mlchart.com/terminology/environment/combined-sewer/"
}