Effluent

Lyon county utility adheres to effluent quality standards in the NAC (Nevada administrative code) (445A.276)

NAC 445A.276 Reuse categories:

Requirements for bacteriological quality of effluent.

(NRS 445A.425)
Treated effluent being used for an activity approved for a reuse category must meet the following requirements for bacteriological quality for that category:

Total Coliform


c.f.u. or mpn/100ml

Fecal Coliform


c.f.u. or mpn/100ml
Reuse Category
 A
 B
 C
 D
 E
30-day geometric mean
 2.2
 2.2
 23
 200
 No Limit
Maximum daily number
 23
 23
 240
 400
 No Limit

As used in this section, “c.f.u. or mpn/100ml” means colony forming units or most probable number per 100 milliliters of the treated effluent. (Added to NAC by Environmental Commission, effective 9‑13‑91; A by R063‑04, 10‑6‑2004), as well as the quality standards that are provided in individual WPCPs (Wastewater pollution control permit) issued by NDEP (Nevada department of environmental protection) http://ndep.nv.gov/bwpc/BWPC01.htm

Discharges


Each of Lyon county utilities WWTF discharges in different ways:
  • Carson Highlands discharges effluent to large leach fields where the water is percolated back into the ground.
  • North Dayton discharges via agricultural sprinklers onto a field of Alfalfa that utilizes the Nitrogen as fertilizer.
  • South Dayton discharges to 2 different locations.
    • The pond system discharges into RIB’s (rapid infiltration basins)
    • The SBR discharges high quality effluent to the golf course for reuse.
  • Rolling A currently discharges 600,000 gallons to the golf course and any excess into RIB’s with plans in the works to reuse the water for parks, schools, and construction water to control dust.