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Test Results

IntroductionUltra Clear Model ST8Ultra Clear Model ST10
UltraClear domestic systems have been designed to meet the NSW Health Department Guidelines. All systems were tested at the AWTS Manufacturers Association Ltd test site located at the Moss Vale Sewer Plant, with testing program monitored by JAS/ANZ accredited company SAI Global (previously QAS). Testing in this Southern Highlands site provided extreme temperature ranges during testing, from less than -1° Celsius to over 30° Celsius, ensuring the systems function in all climates, unlike other systems that have been tested only in warm climates.

An average of over 1,600 litres per day of raw sewage, with BOD of between 200 and 300 mg/L, was pumped through the system during testing of Model Ultra 10. The average daily loading of raw sewage during testing was 1,600 litres for Model ST8 and 2,000 litres for ST10. The average BOD for the single tanks was 183.3 mg/L. The minimum BOD influent required by NSWHD is 150 mg/L. All UltraClear systems consistently achieved far in excess of the required results during testing. UltraClear has been proven to remove over 98% of suspended solids, with removal of harmful micro organisms. UltraClear was able to achieve these results, whilst maintaining a low chlorine residual, reducing the impact on your environment. This ensures that the water irrigated onto your property is clear and safe.
UltraClear systems have been designed by Darryl Rebbeck, a consultant in the manufacturing industry, who has had over 18 years experience in the servicing industry and has a full knowledge of the operation of most types of aerated systems. The systems have been designed for efficient maintenance and servicing by providing easy and full access to all chambers for complete maintenance. This enables the system to function at optimum efficiency at all times. The single tank systems have measurements of 550mm for ST10 and 780mm for ST8 from bottom of inlet to top of lid, which allow for a greater fall to the tank from the house, for easier installation and also decreasing the need for risers. UltraClear systems are manufactured using concrete tanks and baffles manufactured by Highland Tanks Pty Ltd, at 16 Gantry Place, Braemar, to comply with Australian Standards to AS/NZS 1546.1:2008. NSW Health Department Certificate of Accreditation No. CofA 005-20582 and StandardsMark Licence SMKB20582.

Reduction in Nitrogen Levels for Environmentally
Sensitive Area
During the testing of the Ultra Clear AWTS the treated effluent was tested for total N (TN) concentrations. The treatment process has the capacity to reduce the total N concentration, as noted by NSW Health on our Certificate of Accreditation.
Total N concentration from an average of 53.44 mg/l to an average of 18.08 mg/l which represents a reduction of 66.2%

Testing of Models ST8 and ST10 were conducted at the Moss Vale Sewage Treatment Plant under the provisions of the NSW Health Department AWTS Accreditation Guideline and AS/NZS 1546.3:2001 from January  to June 2003.  The testing program was monitored by SAI Global and samples taken by NATA registered laboratory Ecowise Environmental Ltd.  Test averages are from the official test reports as provided to the NSW Health Department.


Model ST8 – 8 person single tank system
CHARACTERISTIC
NSWHD maximum permitted
ST8 test average
BOD 5
20 mg/L
6.52 mg/L
Faecal Coliforms
30 cfu/ml
median – 0 cfu/100ml
Suspended Solids
30 mg/L
2.42 mg/L
Free Residual Chlorine
0.2 – 2.0 mg/L
0.85 mg/L
NSWHD minimum requirement
Dissolved Oxygen
2 mg/L
5.96 mg/L
  • Biochemical Oxygen Demand (BOD) BOD measures the amount of organic matter in effluent. The lower the test result the cleaner the water.
  • Suspended solids measure solid particles in the water.
  • Free Residual Chlorine measures the amount of free chlorine remaining in the water prior to irrigation. The lower the reading, with a low faecal coliform reading, the more efficient the system.
  • Faecal coliforms measure the amount of harmful pathogens in the water. Ultra Clear achieved almost total elimination of harmful pathogens with an average reading of 0.1 cfu/ml. The lower the reading, the clearer and cleaner the irrigated water.
  • Dissolved Oxygen measures the amount of oxygen diffused into the water by the air pump. The higher the reading, the more efficient the method of air diffusion.
Total N concentration from an average of 53.55% mg/l to an average of 22.5 mg/l which represents a reduction of 57.9%

Testing of Models ST8 and ST10 were conducted at the Moss Vale Sewage Treatment Plant under the provisions of the NSW Health Department AWTS Accreditation Guideline and AS/NZS 1546.3:2001 from January  to June 2003.  The testing program was monitored by SAI Global and samples taken by NATA registered laboratory Ecowise Environmental Ltd.  Test averages are from the official test reports as provided to the NSW Health Department.


Model ST10 – 10 person single tank system
CHARACTERISTIC
NSWHD maximum permitted
ST10 test average
BOD 5
20 mg/L
6.60 mg/L
Faecal Coliforms
30 cfu/ml
median – 0 cfu/100ml
Suspended Solids
30 mg/L
3.98 mg/L
Free Residual Chlorine
0.2 – 2.0 mg/L
0.43 mg/L
NSWHD minimum requirement
Dissolved Oxygen
2 mg/L
5.50 mg/L
  • Biochemical Oxygen Demand (BOD) BOD measures the amount of organic matter in effluent. The lower the test result the cleaner the water.
  • Suspended solids measure solid particles in the water.
  • Free Residual Chlorine measures the amount of free chlorine remaining in the water prior to irrigation. The lower the reading, with a low faecal coliform reading, the more efficient the system.
  • Faecal coliforms measure the amount of harmful pathogens in the water. Ultra Clear achieved almost total elimination of harmful pathogens with an average reading of 0.1 cfu/ml. The lower the reading, the clearer and cleaner the irrigated water.
  • Dissolved Oxygen measures the amount of oxygen diffused into the water by the air pump. The higher the reading, the more efficient the method of air diffusion.

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