poconos pennsylvania professional geologist consult

Environmental Scientists, Hydrogeologists, Soil Scientist, and Environmental Education Specialists Located in
Northeastern Pennsylvania

4.0 Domestic Wastewater Characteristics

The following are general characteristics for domestic wastewater.  The regulations covering the sizing of on-lot disposal systems are based on the assumption that the wastewater is similar to domestic wastewater .  Therefore, it may be necessary to provide additional pretreatment or enlarge the on-lot disposal system for higher strengthen wastewaters, such as: restaurants, breweries, nursing homes, hospitals, etc.

Table 1. 
Typical Characteritics of Domestic Wastewater

Parameter  Typical Concentration
Total Coliform  1 billon to over 100 billion per liter
Fecal Coliform  100,000 to 1 billion per liter
BOD 5 200 to 290 mg / L
COD  680 to 730 mg / L
Total Nitrogen 35 to 100 mg N /L
Ammonia   6 to 18 mg N /L
Nitrate + Nitrite < 1 mg N / L
Total Phosphorous 18 to 29 mg P / L
Ortho Phosphorous 6 to 24 mg P /L
Total Solids  680 to 1000 mg / L
Volatile Solids 380 to 500 mg / L
Suspended Solids  200 to 290 mg /L 
Volatile Suspended Solids  150 to 240 mg /L

Source: US EPA, Design Manual: Onsite Wastewater Treatment and Disposal Systems, October 1980.

 

Table 2.
Pollutant Concentration of Major Components 
of Residential Wastewater in mg / L

Parameter Garbage 
Grinders
Basin/Toilet Sink/ Applicanes Combined 
Wastewater
BOD5 2380 280 260 360
Suspended Solid 3500 450 160 400
T. Nitrogen 79 140 17 63
T. Phosphorous 13 20 26 23

Source: US EPA, Design Manual: Onsite Wastewater Treatment and Disposal Systems, October 1980.

 


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B.F. Environmental Consultants
15 Hillcrest Drive
Dallas, PA 18612

Mr. Brian Oram, Professional Geologist, PA Sewage Enforcement Officer

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