The Agency operates the Non-Reclaimable Wastewater (NRW) System. The NRW System conveys high strength wastewater and exports it to treatment facilities in Los Angeles and Orange counties for eventual discharge to the Pacific Ocean.
Wastewater discharged to the NRW System consists mainly of industrial and groundwater treatment brines. Discharging to the NRW System instead of the Agency’s treatment plants keeps salt out of the recycled water, ensuring that the Agency meets the Total Dissolved Solids (TDS) and total nitrogen limits listed in the National Pollutant Discharge Elimination System (NPDES) permits. This enables us to fully utilize recycled water, ensuring a reliable water supply for the region.
The NRW System consists of three trunk lines: NRWS and Etiwanda Wastewater Line (EWL) on the Agency’s north service area convey the wastewater to the County Sanitation Districts of Los Angeles County’s sewer system; and the Inland Empire Brine Line (IEBL) in the Agency’s south service area conveys the wastewater to the Orange County Sanitation District’s sewer system.