Products: Washington

Washington Wastewater Treatment and Dispersal Systems in Washington


OSCAR Onsite offers a wide variety of effective, reliable and affordable Washington wastewater treatment and dispersal alternatives. Wastewater and water reclamation system contractors throughout the state depend on our highly trained and experienced pros to assist in selection and placement of the best treatment and dispersal units and technologies for each job site, especially when conventional systems won’t do the job.

Alternative Washington Wastewater Treatment and Dispersal Products

OSCAR II
OSCAR III
OSCAR-in-a-Box
OSCAR-LOWeFLOW System
LOWeFLOW-UV

Certified Installation Professionals in Washington


OSCAR II

OSCAR Onsite offers a wide variety of effective, reliable and affordable Washington wastewater treatment and dispersal alternatives.The OSCAR-II system is another of our high-quality Washington wastewater treatment and dispersal products. It’s been developed and approved to allow virtually any treatment technology to be used in conjunction with the OSCAR system. Prior to OSCAR-II, the only treatment technology approved for use with the OSCAR system was the LOWeFLOW filter. Now, any other system can be used with the OSCAR technology.

System Description

The OSCAR-II system is a treatment and dispersal technology with three components: the treatment vessel, the pump chamber, and the OSCAR dispersal technology. There are two options for the treatment vessel; a 1500 gallon septic tank (up to 500 gpd design flow), OR a vessel that meets the following four criteria:

  1. Must be listed on Washington State Department of Health’s List of Wastewater Containment Vessels.
  2. Must be a minimum of 1,000 gallons with one or more compartments.
  3. Must  have been tested under the National Sanitation Foundation standard 40 testing protocol and have a maximum of 100 CBOD5 and 75 TSS mg/l effluent treatment capability.
  4. Must be on Lowridge Onsite Technologies, LLC list of approved treatment vessels.

Treatment Level Expectations

The OSCAR-II with 1500-gallon septic tank is approved as a treatment level C (TLC) system, and requires 24” of soil. This arrangement is referred to as OSCAR-TLC. When the treatment vessel is listed as level B (TLB), the OSCAR-II can be installed with soil depths between 12” and 18”. OSCAR-TLC can be used in place of a low-pressure distribution (LPD) system, using less than half the area as an LPD and more cost competitive.
Manuals for OSCAR-II: Design, O&M, Owner’s, Installation, Approved Treatment Vessel List, and Bio-Microbics with OSCAR-II

If you would like to see additional technologies listed have the manufacturers contact us. We are happy to include anyone!

Manuals for OSCAR-II: Design, O&M, Owner’s, Installation, Approved Treatment Vessel List, and Bio-Microbics with OSCAR-II.

Drawings for OSCARS are provided in both DWG and pdf formats.

Drawings for OSCARS are provided in both DWG and pdf formats.

OS=OSCAR, 240 = design flow in gpd, 5 or 7 = 5’ (OS-50 coil) or 7’ (OS-100 coil), S = sloped site, no “S” = flat site.

Control Panel Wiring Diagram

LF1P-RF-BLWR

Headworks for OSCAR-II. HWN = headworks Netafim, .7 = 3/4” filter, RF = reverse flush.


OSCAR III

The OSCAR-III system is another high-quality Washington wastewater treatment and dispersal product. An onsite sewage treatment and dispersal component for use with residential wastewater, it meets treatment level B requirements. Wastewater passes from a septic tank into a dosing tank from which its dosed to the OSCAR coils. Effluent is micro-dosed from the coils into a layer of ASTM C-33 sand where physical, biological and chemical treatment processes remove organic compounds and pathogens from the waste stream. Treated liquid then migrates downward to the receiving soil where final discharge of treated wastewater enters the soil environment.

System Description

The OSCAR-III is comprised of a 12” layer of C-33 sand media and a series of custom-manufactured Netafim Bioline drip tubing coils. The sand media is placed on a prepared soil surface, creating a level surface for the coils. OSCAR-III coils are then placed on the sand and covered with another 6” of sand media. No other cover material is needed.
Minimum tank sizes for design flow up to 500 gpd is 1,500 gallon septic tank and 1,000 gallon pump chamber. Coil arrangement and minimum sand depth for the OSCAR-III system are different than that for OSCAR-II.

Manuals for OSCAR-III: Design, O&M, Owner’s, Installation.

Drawings for OSCARS are provided in both DWG and pdf formats.

OSCAR-III Drawings: Drawings for OSCARS are provided in both DWG and pdf formats.

OS=OSCAR, 240 = design flow in gpd, 5 or 7 = 5’ (OS-50 coil) or 7’ (OS-100 coil), S = sloped site, no “S” = flat site.

Headworks for OSCAR-III. HWN = headworks Netafim, .7 = 3/4” filter, RF = reverse flush.

HWN-1-RF PDF
HWN-.7-RF PDF


OSCAR-in-a-BOX

Content coming soon.


OSCAR-LOWeFLOW System

View or download manuals here.
OSCAR Onsite offers a wide variety of effective, reliable and affordable Washington wastewater treatment and dispersal alternatives.The OSCAR-LOWeFLOW™ (OS-LF) is one of our company’s most popular products. Requiring only 12” of soil to restrictive layer, it has the smallest footprint of any Washington wastewater treatment and dispersal technology, and there’s NO UV light! The OSCAR (Onsite Sand Coil Area Recharge) technology is an onsite sewage disposal and disinfection component used with our LOWeFLOW™ treatment system, and is comprised of a 6” layer of C-33 sand media and a series of pre-assembled Netafim Bioline™ drip tubing coils. The sand media is placed on a prepared soil surface with the OSCAR coils placed on top of it, then covered with another 6” of sand media. The sand/soil interface is the discharge point of the treated wastewater, and vertical separation is measured from the original soil surface to the restrictive layer.

System Description

The OSCAR-LOWeFLOW™ treatment system is comprised of a recirculation filter, septic tank, recirculation/mixing tank, headworks, discharge/clarifier tank, and the OSCAR unit. Wastewater is collected in the septic tank where gross solids are settled out and primary treatment occurs. Septic tank effluent flows into the recirculation tank where it’s mixed with treated filtrate from the gravel filter. The mixed liquid is then dosed to a drip tubing network called a Coil in the top of the LOWeFLOW ™ filter.
Treated filtrate from the LOWeFLOW™ filter flows by gravity back to the recirculation tank through the splitter valve which determines its flow path. When the liquid level in the recirculation tank is high enough to seat the splitter valve, all the filtrate passes into the clarifier/discharge tank. The liquid accumulated in the clarifier/discharge tank is then time-dosed to the OSCAR coils where final treatment and dispersal occurs. Design flows of the OSCAR-LOWeFLOW™ system range from 240 gpd to 100,000 gpd.

Treatment Level Expectations

As one of the best Washington wastewater treatment and dispersal products, the OSCAR-LOWeFLOW™ system was tested under the National Sanitation Foundation’s standard 40 protocol, and the Washington State Department of Health’s fecal coliform testing requirements. Average treatment level results for the six month test were:

5 mg/l CBOD₅
9 mg/l TSS
27 fecal coliform colonies/100 ml, MPN
Turbidity ranged from 1-2 NTU

Manuals for OSCAR-LOWeFLOW: Design, O&M, Owner’s and Installation

A 500 gpd LOWeFLOW filter. The LOWeFLOW™ system is a recirculating gravel filter with a loading rate of 25 g/ft2/d.
ay McDonald
Powered by AY Mc Donald Co.

System Description

oscar on-site technologies Wastewater Treatment Dispersal SystemThe OSCAR-LOWeFLOW™ treatment system is comprised of a recirculation filter, a septic tank, recirculation/mixing tank, headworks, discharge/clarifier tank, and the OSCAR unit.

Wastewater is collected in a standard septic tank where gross solids are settled out and primary treatment occurs. Septic tank effluent flows from the septic tank into the recirculation tank. Liquid in the recirculation tank is mixed with treated filtrate from the gravel filter. The mixed liquid is dosed to a drip tubing network called a Coil in the top of the LOWeFLOW ™ filter.Treated filtrate from the LOWeFLOW™ filter flows by gravity back to the recirculation tank through the splitter valve. The position of the splitter valve determines the flow path of the filtrate. When the liquid level in the recirculation tank is high enough to seat the splitter valve, all of the filtrate passes into the clarifier/discharge tank, otherwise, all of the returning filtrate returns to the recirculation tank. Liquid accumulates in the clarifier/discharge tank. Liquid from the clarifier/discharge tank is timed dosed to the OSCAR coils where final treatment and dispersal occurs.

Design flows of the OSCAR-LOWeFLOW™ system range from 240 gpd to 100,000 gpd.

Treatment Level Expectations

The OSCAR-LOWeFLOW™ system was tested under National Sanitation Foundation’s standard 40 protocol and the Washington State Department of Health’s fecal coliform testing requirements. Average treatment level results for the six month test were:

5 mg/l CBOD₅
9 mg/l TSS
27 fecal coliform colonies/100 ml, MPN
Turbidity ranged from 1-2 NTU

View or Download Tech Spec Below

Manuals for OSCAR-LOWeFLOW: Design, O&M, Owner’s, and Installation.

Headworks for OSCAR and LOWeFLOW-OSCAR. HWN = headworks Netafim, .7 = 3/4” filter, RF = reverse flush.

Drawings for OSCARS are provided in both DWG and pdf formats.

LFOS = LOWeFLOWOSCAR 500 gpd, LFOS+1-600= 600 gpd, LFOS+1 = up to 1,000 gpd, WWA= western Washington, EWA = eastern Washington.

Drawings for OSCARS are provided in both DWG and pdf formats.

OS=OSCAR, 240 = design flow in gpd, 5 or 7 = 5’ (OS-50 coil) or 7’ (OS-100 coil), S = sloped site, no “S” = flat site.

Control Panel Wiring Diagram

Sanitarian’s Check List

Sanitarian’s Checklist


LOWeFLOW-UV

View or Download Tech Spec Below

Best Alternative Washington Wastewater Treatment and Dispersal Products

Serving Washington, Oregon, Idaho & Arizona