West Kempsey Sewage Treatment Plant
2018 Environment Protection Licence data

Premises: West Kempsey Sewage Treatment Plant
Licensee: Kempsey Shire Council
Licence number: 763

Sampling point 1
Pollutant Limit Result
Date Sampled: 24 October 2018 - Date obtained: 31 October 2018 - Date published: 5 November 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 3 mg/L
Biochemical Oxygen Demand 20 mg/L <4 mg/L
pH 6.5 - 8.5 8.0
Total nitrogen 20 mg/L 11.2 mg/L
Total phosphorus 3 mg/L 0.19 mg/L
Faecal coliforms 600 cfu/100mL 45cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.35 mg/L
Volume of wastewater discharged 24 October 2018   2040 kL
Note: Nil rainfall experienced for this period
Date Sampled: 10 October 2018 - Date obtained: 17 October 2018 - Date published: 18 October 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 4 mg/L
Biochemical Oxygen Demand 20 mg/L <2 mg/L
pH 6.5 - 8.5 10.1
Total nitrogen 20 mg/L 11.2 mg/L
Total phosphorus 3 mg/L 0.13 mg/L
Faecal coliforms 600 cfu/100mL 0 cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.05 mg/L
Volume of wastewater discharged 10 October 2018   1350 kL
Note: Nil rainfall experienced for this period
Date Sampled: 26 September 2018 - Date obtained: 5 October 2018 - Date published: 9 October 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 9 mg/L
Biochemical Oxygen Demand 20 mg/L <4 mg/L
pH 6.5 - 8.5 8.0
Total nitrogen 20 mg/L 11.7 mg/L
Total phosphorus 3 mg/L 0.28 mg/L
Faecal coliforms 600 cfu/100mL 76 cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.15 mg/L
Volume of wastewater discharged 26 September 2018   1880 kL
Note: Nil rainfall experienced for this period
Date Sampled: 12 September 2018 - Date obtained: 19 September 2018 - Date published: 25 September 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 10 mg/L
Biochemical Oxygen Demand 20 mg/L 4 mg/L
pH 6.5 - 8.5 7.5
Total nitrogen 20 mg/L 13.0 mg/L
Total phosphorus 3 mg/L 0.35 mg/L
Faecal coliforms 600 cfu/100mL 220 cfu/100mL
Nitrogen (ammonia) 10 mg/L 1.35 mg/L
Volume of wastewater discharged 12 September 2018   2040 kL
Note: Nil rainfall experienced for this period
Date Sampled: 29 August 2018 - Date obtained: 10 September 2018 - Date published: 11 September 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 23 mg/L
Biochemical Oxygen Demand 20 mg/L 9 mg/L
pH 6.5 - 8.5 8.4
Total nitrogen 20 mg/L 14.7 mg/L
Total phosphorus 3 mg/L 0.20 mg/L
Faecal coliforms 600 cfu/100mL 46 cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.43 mg/L
Volume of wastewater discharged 29 August 2018   1055 kL
Date Sampled: 15 August 2018 - Date obtained: 10 September 2018 - Date published: 11 September 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 25 mg/L
Biochemical Oxygen Demand 20 mg/L 14 mg/L
pH 6.5 - 8.5 8.5
Total nitrogen 20 mg/L 17.9 mg/L
Total phosphorus 3 mg/L 0.24 mg/L
Faecal coliforms 600 cfu/100mL 90 cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.78 mg/L
Volume of wastewater discharged 15 August 2018   1080 kL
Note: Nil rainfall experienced for this period
Date Sampled: 1 August 2018 - Date obtained: 7 August 2018 - Date published: 8 August 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 22 mg/L
Biochemical Oxygen Demand 20 mg/L 9 mg/L
pH 6.5 - 8.5 7.9
Total nitrogen 20 mg/L 15.3 mg/L
Total phosphorus 3 mg/L 0.31 mg/L
Faecal coliforms 600 cfu/100mL 20 cfu/100mL
Nitrogen (ammonia) 10 mg/L 1.71 mg/L
Volume of wastewater discharged 1 August 2018   2060 kL
Note: Nil rainfall experienced for this period
Date Sampled: 18 July 2018 - Date obtained: 23 July 2018 - Date published: 4 July 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 15 mg/L
Biochemical Oxygen Demand 20 mg/L 6 mg/L
pH 6.5 - 8.5 7.7
Total nitrogen 20 mg/L 16.3 mg/L
Total phosphorus 3 mg/L 0.36 mg/L
Faecal coliforms 600 cfu/100mL 100 cfu/100mL
Nitrogen (ammonia) 10 mg/L 3.73 mg/L
Volume of wastewater discharged 23 July 2018   2120 kL
Date Sampled: 4 July 2018 - Date obtained: 16 July 2018 - Date published: 4 July 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 11 mg/L
Biochemical Oxygen Demand 20 mg/L 5 mg/L
pH 6.5 - 8.5 7.3
Total nitrogen 20 mg/L 18.7 mg/L
Total phosphorus 3 mg/L 0.38 mg/L
Faecal coliforms 600 cfu/100mL 200 cfu/100mL
Nitrogen (ammonia) 10 mg/L 4.10 mg/L
Volume of wastewater discharged 4 July 2018   5100 kL
Note: 6mm to 16mm rainfall was experienced across all areas on this date
Date Sampled: 20 June 2018 - Date obtained: 20 June 2018 - Date published: 27 June 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 22 mg/L
Biochemical Oxygen Demand 20 mg/L 4 mg/L
pH 6.5 - 8.5 7.6
Total nitrogen 20 mg/L 19.3 mg/L
Total phosphorus 3 mg/L 0.28 mg/L
Faecal coliforms 600 cfu/100mL 75 cfu/100mL
Nitrogen (ammonia) 10 mg/L 4.30 mg/L
Volume of wastewater discharged 20 June 2018   640 kL
Date Sampled: 6 June 2018 - Date obtained: 16 June 2018 - Date published: 19 June 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 41 mg/L
Biochemical Oxygen Demand 20 mg/L 9 mg/L
pH 6.5 - 8.5 7.6
Total nitrogen 20 mg/L 13.0 mg/L
Total phosphorus 3 mg/L 0.23 mg/L
Faecal coliforms 600 cfu/100mL 240 cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.56 mg/L
Volume of wastewater discharged 6 June 2018   2150 kL
Date Sampled: 23 May 2018 - Date obtained: 30 May 2018 - Date published: 4 June 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 51 mg/L
Biochemical Oxygen Demand 20 mg/L 13 mg/L
pH 6.5 - 8.5 9.2
Total nitrogen 20 mg/L 10.9 mg/L
Total phosphorus 3 mg/L 0.24 mg/L
Faecal coliforms 600 cfu/100mL 16 cfu/100mL
Nitrogen (ammonia) 10 mg/L <0.05 mg/L
Volume of wastewater discharged 9 May 2018   1070 kL
Date Sampled: 9 May 2018 - Date obtained: 17 May 2018 - Date published: 18 May 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 49 mg/L
Biochemical Oxygen Demand 20 mg/L 16 mg/L
pH 6.5 - 8.5 9.0
Total nitrogen 20 mg/L 11.2 mg/L
Total phosphorus 3 mg/L 0.30 mg/L
Faecal coliforms 600 cfu/100mL 10 cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.29 mg/L
Volume of wastewater discharged 9 May 2018   1380 kL
Date Sampled: 26 April 2018 - Date obtained: 2 May 2018 - Date published: 3 May 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 53 mg/L
Biochemical Oxygen Demand 20 mg/L 18 mg/L
pH 6.5 - 8.5 8.8
Total nitrogen 20 mg/L 9.44 mg/L
Total phosphorus 3 mg/L 0.27 mg/L
Faecal coliforms 600 cfu/100mL 170 cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.10 mg/L
Volume of wastewater discharged 26 April 2018   3580 kL
Date Sampled: 11 April 2018 - Date obtained: 18 April 2018 - Date published: 23 April 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 54 mg/L
Biochemical Oxygen Demand 20 mg/L 12 mg/L
pH 6.5 - 8.5 9.2
Total nitrogen 20 mg/L 6.19 mg/L
Total phosphorus 3 mg/L 0.21 mg/L
Faecal coliforms 600 cfu/100mL 30 cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.11 mg/L
Volume of wastewater discharged 11 April 2018   670 kL
Date Sampled: 28 March 2018 - Date obtained: 5 April 2018 - Date published: 9 April 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 13 mg/L
Biochemical Oxygen Demand 20 mg/L 7 mg/L
pH 6.5 - 8.5 7.1
Total nitrogen 20 mg/L 8.34 mg/L
Total phosphorus 3 mg/L 0.56 mg/L
Faecal coliforms 600 cfu/100mL 790 cfu/100mL
Nitrogen (ammonia) 10 mg/L 2.63 mg/L
Volume of wastewater discharged 28 March 2018   10,120 kL
Date Sampled: 14 March 2018 - Date obtained: 21 March 2018 - Date published: 29 March 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 62 mg/L
Biochemical Oxygen Demand 20 mg/L 35 mg/L
pH 6.5 - 8.5 8.8
Total nitrogen 20 mg/L 7.84 mg/L
Total phosphorus 3 mg/L 0.33 mg/L
Faecal coliforms 600 cfu/100mL 186 cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.11 mg/L
Volume of wastewater discharged 14 March 2018   1430 kL
Date Sampled: 28 February 2018 - Date obtained: 12 March 2018 - Date published: 14 March 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 34 mg/L
Biochemical Oxygen Demand 20 mg/L 29 mg/L
pH 6.5 - 8.5 8.7
Total nitrogen 20 mg/L 3.79 mg/L
Total phosphorus 3 mg/L 0.52 mg/L
Faecal coliforms 600 cfu/100mL 10 cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.50 mg/L
Volume of wastewater discharged 28 February 2018   1930 kL
Date Sampled: 14 February 2018 - Date obtained: 28 February 2018 - Date published: 1 March 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 38 mg/L
Biochemical Oxygen Demand 20 mg/L >27 mg/L
pH 6.5 - 8.5 9.0
Total nitrogen 20 mg/L 3.94 mg/L
Total phosphorus 3 mg/L 0.60 mg/L
Faecal coliforms 600 cfu/100mL 8 cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.62 mg/L
Volume of wastewater discharged 14 February 2018   2020 kL
Date Sampled: 31 January 2018 - Date obtained: 9 February 2018 - Date published: 12 February 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 66 mg/L
Biochemical Oxygen Demand 20 mg/L 24 mg/L
pH 6.5 - 8.5 9.1
Total nitrogen 20 mg/L 3.95 mg/L
Total phosphorus 3 mg/L 0.96 mg/L
Faecal coliforms 600 cfu/100mL 50 cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.25 mg/L
Volume of wastewater discharged 31 January 2018   2020 kL
Date Sampled: 17 January 2018 - Date obtained: 23 January 2018 - Date published: 24 January 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 74 mg/L
Biochemical Oxygen Demand 20 mg/L 29 mg/L
pH 6.5 - 8.5 9.2
Total nitrogen 20 mg/L 5.54 mg/L
Total phosphorus 3 mg/L 0.88 mg/L
Faecal coliforms 600 cfu/100mL 150 cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.13 mg/L
Volume of wastewater discharged 17 January 2018   550 kL
Date Sampled: 4 January 2018 - Date obtained: 16 January 2018 - Date published: 17 January 2018
Oil & grease 10 mg/L <2 mg/L
Total suspended solids 40 mg/L 52 mg/L
Biochemical Oxygen Demand 20 mg/L 23 mg/L
pH 6.5 - 8.5 8.7
Total nitrogen 20 mg/L 8.33 mg/L
Total phosphorus 3 mg/L 1.07 mg/L
Faecal coliforms 600 cfu/100mL 810 cfu/100mL
Nitrogen (ammonia) 10 mg/L 0.44 mg/L
Volume of wastewater discharged 4 January 2018   9390 kL

Note: TNTC - Too Numerous To Count

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