Sawpit Creek Sewage Plant: Pollutant monitoring data archive | Park management

Licence

View the Environment Protection Licence No. 447 terms and conditions.

Licensee

State of New South Wales (Department of Planning and Environment), PO Box 41, Perisher Valley NSW 2624

Premises

Sawpit Creek Sewage Treatment Plant, Kosciuszko National Park, Sawpit Creek NSW 2627

Monitoring points

There are 3 monitoring points:

Monitoring Point 1 – Outlet from the final treatment pond to an underground absorption trench
Monitoring Point 2 – Sawpit Creek Upstream
Monitoring Point 3 – Sawpit Creek Downstream.

View map of monitoring points (PDF 824KB).

The monitoring frequency required by Environment Protection Licence No. 447 for all points is monthly.

Pollutant monitoring data

Current year
2023–2024
2022–2023
2021–2022
2020–2021
2019–2020
2018–2019

2023–2024 data

Monitoring point 1 – Discharge to groundwater effluent quality monitoring

The outlet from the final treatment pond to an underground absorption trench.

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Oil & grease (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
18-Oct-23	8.0	0.2	2.6	0.04	16	2	<1	<1	31-Oct-23	1-Nov-23
01-Nov-23	8.4	<0.1	2.9	0.03	16	6	<1	<1	14-Nov-23	15-Nov-23
29-Nov-23	8.1	<0.1	3.0	0.01	4	8	<1	149	8-Dec-23	12-Dec-23
27-Dec-23	7.3	0.2	4.1	<0.01	8	2	<1	<2	9-Jan-24	12-Jan-24
24-Jan-24	7.8	<0.01	3.5	0.05	4	<2	<1	<1	7-Feb-24	15-Feb-24
21-Feb-24	8.0	<0.01	4.3	0.08	3	<2	<1	1	6-Mar-24	7-Mar-24
20-Mar-24	8.0	0.1	2.6	<0.01	2	<2	<1	<1	3-Apr-24	9-Apr-24
17-Apr-24	8.0	<0.1	2.8	0.02	2	<2	<1	1	1-May-24	2-May-24
15-May-24	7.9	<0.1	2.4	0.02	<2	<2	<1	<1	23-May-24	3-Jun-24
12-Jun-24	7.7	0.3	3.7	0.01	3	<2	<1	<1	24-Jun-24	25-Jun-24
10-Jul-24	7.8	<0.1	4.8	0.20	<2	<2	<1	<1	22-Jul-24	24-Jul-24
07-Aug-24	7.5	<0.1	4.6	0.07	<2	<2	<1	<1	16-Aug-24	22-Aug-24
04-Sep-24	7.8	<0.1	4.4	0.11	5	9	<1	<1	16-Sep-24	18-Sep-24

Monitoring point 2 – Ambient water quality monitoring (Sawpit Creek Upstream)

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
18-Oct-23	7.7	0.014	0.14	<0.01	3	<2	4	31-Oct-23	1-Nov-23
01-Nov-23	7.9	0.011	0.07	<0.01	3	<2	3	14-Nov-23	15-Nov-23
29-Nov-23	7.6	0.010	1.28	0.15	106	2	7,800	8-Dec-23	12-Dec-23
27-Dec-23	7.5	<0.002	0.37	<0.01	7	<2	34	9-Jan-24	12-Jan-24
24-Jan-24	7.4	<0.002	0.14	<0.01	4	<2	12	7-Feb-24	15-Feb-24
21-Feb-24	7.5	<0.002	0.20	0.02	3	<2	45	6-Mar-24;	7-Mar-24
20-Mar-24	7.7	0.005	0.14	<0.01	4	<2	56	3-Apr-24	9-Apr-24
17-Apr-24	7.7	0.006	0.12	0.01	5	<2	14	1-May-24	2-May-24
15-May-24	7.6	0.007	0.17	0.02	2	<2	3	23-May-24	3-Jun-24
12-Jun-24	7.0	0.004	0.31	0.02	10	<2	18	24-Jun-24	25-Jun-24
10-Jul-24	7.5	<0.1	0.13	0.03	4	<2	6	22-Jul-24	24-Jul-24
07-Aug-24	7.5	<0.002	0.05	0.01	<2	<2	6	16-Aug-24	22-Aug-24
04-Sep-24	7.6	0.003	0.16	0.01	<2	<2	10	16-Sep-24	18-Sep-24

Monitoring point 3 – Ambient water quality monitoring (Sawpit Creek Downstream)

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
18-Oct-23	7.1	<0.002	0.09	<0.01	3	<2	4	31-Oct-23	1-Nov-23
01-Nov-23	7.6	0.015	0.06	0.01	<2	<2	3	14-Nov-23	15-Nov-23
29-Nov-23	7.2	0.009	1.40	0.17	146	3	4,100	8-Dec-23	12-Dec-23
27-Dec-23	7.2	0.007	0.32	<0.01	9	<2	48	9-Jan-24	12-Jan-24
24-Jan-24	7.4	<0.002	0.16	0.01	3	<2	15	7-Feb-24	15-Feb-24
21-Feb-24	7.4	0.002	0.19	0.02	4	<2	46	6-Mar-24	7-Mar-24
20-Mar-24	7.4	0.008	0.14	<0.01	3	<2	40	3-Apr-24	9-Apr-24
17-Apr-24	7.5	0.002	0.12	0.02	<2	<2	74	1-May-24	2-May-24
15-May-24	7.3	0.008	0.22	0.02	2	<2	6	23-May-24	3-Jun-24
12-Jun-24	6.9	0.114	0.42	0.02	10	<2	15	24-Jun-24	25-Jun-24
10-Jul-24	7.2	<0.1	0.08	0.02	2	<2	3	22-Jul-24	24-Jul-24
07-Aug-24	7.2	0.002	<0.05	0.02	<2	<2	2	16-Aug-24	22-Aug-24
04-Sep-24	7.3	0.004	0.11	<0.01	<2	<2	5	16-Sep-24	18-Sep-24

2022–2023 data

Monitoring point 1 – Discharge to groundwater effluent quality monitoring

The outlet from the final treatment pond to an underground absorption trench.

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Oil & grease (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
09-Nov-22	7.9	<0.1	3.2	0.03	9	2	<1	<2	22-Nov-22	22-Nov-22
23-Nov-22	7.8	<0.1	3.8	0.01	5	<2	<1	<1	5-Dec-22	8-Dec-22
21-Dec-22	8.1	0.2	4.1	0.03	8	4	<1	<1	4-Jan-23	10-Jan-23
24-Jan-23	8.4	<0.01	3.2	0.02	12	5	<1	<1	7-Feb-23	16-Feb-23
22-Feb-23	8.1	<0.01	2.9	0.03	12	<2	<1	2	2-Mar-23	8-Mar-23
22-Mar-23	7.8	<0.1	2.7	0.06	10	4	<1	2	31-Mar-23	4-Apr-23
19-Apr-23	8.2	0.2	3.9	0.02	11	<2	<1	<1	5-May-23	9-May-23
17-May-23	8.2	0.4	4.8	0.01	7	3	<1	<1	13-Jun-23	19-Jun-23
14-Jun-23	7.5	0.4	4.0	0.01	7	<2	<1	<1	27-Jun-23	5-Jul-23
12-Jul-23	8.0	<0.1	4.5	0.19	7	4	<1	5	24-Jul-23	28-Jul-23
09-Aug-23	8.6	<0.1	5.8	0.13	22	9	<1	94	22-Aug-23	22-Aug-23
06-Sep-23	8.2	<0.1	3.3	0.03	7	2	<1	4	15-Sep-23	19-Sep-23

Monitoring point 2 – Ambient water quality monitoring (Sawpit Creek Upstream)

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
26-Oct-22	7.3	<0.002	0.19	0.01	4	<2	16	7-Nov-22	22-Nov-22
09-Nov-22	7.1	<0.002	0.17	0.01	3	<2	<2	22-Nov-22	22-Nov-22
23-Nov-22	7.1	0.021	0.17	0.01	3	<2	8	5-Dec-22	8-Dec-22
21-Dec-22	7.2	0.003	0.12	0.01	3	<2	<2	4-Jan-23	10-Jan-23
24-Jan-23	7.1	0.019	0.23	0.01	13	<2	40	7-Feb-23	16-Feb-23
22-Feb-22	7.2	0.005	0.14	0.02	5	<2	48	2-Mar-23	8-Mar-23
22-Mar-23	6.9	0.010	0.15	0.02	3	<2	20	31-Mar-23	4-Apr-23
19-Apr-23	7.7	0.026	0.11	0.01	3	<2	6	5-May-23	9-May-23
17-May-23	7.7	0.003	0.06	<0.01	2	<2	2	13-Jun-23	19-Jun-23
14-Jun-23	7.5	0.025	0.15	0.01	6	<2	4	27-Jun-23	5-Jul-23
12-Jul-23	7.6	0.014	0.10	0.01	3	<2	1	24-Jul-23	28-Jul-23
09-Aug-23	7.8	0.016	0.07	<0.01	<2	<2	17	22-Aug-23	22-Aug-23
06-Sep-23	7.7	0.010	0.07	<0.01	3	<2	26	15-Sep-23	19-Sep-23

Monitoring point 3 – Ambient water quality monitoring (Sawpit Creek Downstream)

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
26-Oct-22	7.3	<0.002	0.18	0.02	4	<2	14	7-Nov-22	22-Nov-22
09-Nov-22	7.0	0.003	0.18	0.01	3	<2	8	22-Nov-22	22-Nov-22
23-Nov-22	6.9	0.014	0.17	<0.01	3	<2	8	5-Dec-22	8-Dec-22
21-Dec-22	7.2	0.003	0.12	0.01	4	<2	2	4-Jan-23	10-Jan-23
24-Jan-23	7.1	0.021	0.27	0.02	12	<2	44	7-Feb-23	16-Feb-23
22-Feb-23	7.2	0.006	0.15	0.02	4	<2	30	2-Mar-23	8-Mar-23
22-Mar-23	6.9	0.008	0.17	0.02	3	<2	44	31-Mar-23	4-Apr-23
19-Apr-23	7.5	0.025	0.13	0.01	4	<2	6	5-May-23	9-May-23
17-May-23	7.3	0.005	0.06	<0.01	<2	<2	9	13-Jun-23	19-Jun-23
14-Jun-23	7.2	0.037	0.14	0.01	5	<2	4	27-Jun-23	5-Jul-23
12-Jul-23	7.3	0.017	0.11	0.01	3	<2	1	24-Jul-23	28-Jul-23
09-Aug-23	7.5	0.014	0.07	<0.01	<2	<2	8	22-Aug-23	22-Aug-23
06-Sep-23	7.4	0.007	0.08	<0.01	3	<2	79	15-Sep-23	19-Sep-23

2021–2022 data

Monitoring point 1 – Discharge to groundwater effluent quality monitoring

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Oil & grease (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
27-Oct-21	8.4	<0.1	4.5	0.05	9	4	<1	1	08-Nov-21	08-Dec-21
24-Nov-21	7.7	<0.1	2.8	0.06	16	6	<1	<2	06-Dec-21	08-Dec-21
22-Dec-21	7.6	0.2	2.2	<0.01	3	<2	<1	4	05-Jan-22	13-Jan-22
19-Jan-22	7.9	<0.1	1.7	0.03	10	3	<1	5	31-Jan-22	01-Feb-22
16-Feb-22	8.1	<0.1	4.3	0.02	5	<2	<1	<1	24-Feb-22	01-Mar-22
16-Mar-22	7.8	1.3	3.5	0.05	13	3	<1	3	25-Mar-22	30-Mar-22
13-Apr-22	8.0	<0.1	4.2	0.03	4	<2	<1	<1	27-Apr-22	28-Apr-22
11-May-22	8.0	<0.1	4.7	0.08	9	<2	<1	23	20-May-22	30-May-22
08-Jun-22	7.8	0.4	3.8	<0.01	3	<2	<1	<1	21-Jun-22	12-Jul-22
06-Jul-22	7.7	<0.1	6.1	<0.01	4	<2	<1	1	14-Jul-22	21-Jul-22
03-Aug-22	7.9	<0.1	4.0	0.16	8	3	<1	<1	15-Aug-22	16-Aug-22
31-Aug-22	8.1	<0.1	3.8	0.20	13	<2	<1	6	8-Sep-22	20-Sep-22
28-Sep-22	8.1	<0.1	1.6	0.03	18	4	<1	<1	11-Oct-22	17-Oct-22

Monitoring point 2 – Ambient water quality monitoring (Sawpit Creek Upstream)

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
27-Oct-21	8.2	0.032	0.14	0.01	3	<2	8	08-Nov-21	08-Dec-21
24-Nov-21	7.9	0.011	0.15	<0.01	3	<2	6	06-Dec-21	08-Dec-21
22-Dec-21	8.0	0.009	0.16	<0.01	<2	<2	27	05-Jan-22	13-Jan-22
19-Jan-22	8.0	<0.002	0.20	0.02	3	<2	26	31-Jan-22	01-Feb-22
16-Feb-22	7.5	<0.002	0.16	0.01	7	<2	27	24-Feb-22	01-Mar-22
16-Mar-22	7.2	0.013	0.15	0.01	2	<2	33	25-Mar-22	30-Mar-22
13-Apr-22	7.4	<0.002	0.16	0.01	4	<2	4	27-Apr-22	28-Apr-22
11-May-22	7.4	0.002	0.12	0.01	4	<2	1	20-May-22	30-May-22
08-Jun-22	8.2	<0.002	0.12	0.01	3	<2	3	21-Jun-22	12-Jul-22
06-Jul-22	7.3	<0.002	0.13	<0.01	3	<2	<1	14-Jul-22	21-Jul-22
03-Aug-22	7.3	0.004	0.12	<0.01	5	<2	3	15-Aug-22	16-Aug-22
31-Aug-22	7.3	<0.002	0.13	0.01	4	<2	7	8-Sep-22	20-Sep-22
28-Sep-22	7.4	0.030	0.24	0.02	16	<2	92	11-Oct-22	17-Oct-22
26-Oct-22	7.3	<0.002	0.19	0.01	4	<2	16	7-Nov-22	15-Nov-22

Monitoring point 3 – Ambient water quality monitoring (Sawpit Creek Downstream)

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
27-Oct-21	7.9	0.019	0.11	0.01	3	<2	13	08-Nov-21	08-Dec-21
24-Nov-21	7.7	0.015	0.15	<0.01	3	<2	4	06-Dec-21	08-Dec-21
22-Dec-21	7.7	0.013	0.16	0.01	<2	<2	74	05-Jan-22	13-Jan-22
19-Jan-22	7.8	<0.002	0.21	0.02	4	<2	18	31-Jan-22	01-Feb-22
16-Feb-22	7.5	<0.002	0.39	0.03	3	<2	26	24-Feb-22	01-Mar-22
16-Mar-22	7.1	<0.002	0.15	0.01	2	<2	15	25-Mar-22	30-Mar-22
13-Apr-22	7.3	0.008	0.18	0.01	4	<2	<2	27-Apr-22	28-Apr-22
11-May-22	7.4	0.004	0.10	0.01	3	<2	<1	20-May-22	30-May-22
08-Jun-22	7.2	<0.002	0.11	<0.01	2	<2	<2	21-Jun-22	12-Juy-22
06-Jul-22	7.3	<0.002	0.14	<0.01	2	<2	1	14-Jul-22	21-Jul-22
03-Aug-22	7.3	0.007	0.13	<0.01	6	<2	1	15-Aug-22	16-Aug-22
31-Aug-22	7.2;	<0.002	0.12	0.01	3	<2	1	8-Sep-22	20-Sep-22
28-Sep-22	7.3	0.004	0.24	0.03	16	<2	420	11-Oct-22	17-Oct-22
26-Oct-22	7.3	<0.002	0.18	0.02	4	<2	14	7-Nov-22	15-11-22

2020–2021 data

Monitoring point 1 – Discharge to groundwater effluent quality monitoring

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Oil & grease (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
14-Oct-20	8.4	0.1	4.3	0.03	7	2	<1	<1	22-Oct-20	31-Oct-20
11-Nov-20	8.1	<0.1	1.2	0.02	3	<2	<1	<1	23-Nov-20	30-Nov-20
09-Dec-20	8.6	<0.1	1.9	0.06	20	6	<1	<1	21-Dec-20	22-Dec-20
06-Jan-21	8.2	<0.1	5.5	0.19	41	11	<1	4	18-Jan-21	20-Jan-21
03-Feb-21	8.4	<0.1	2.5	0.06	18	6	<1	<2	12-Feb-21	18-Feb-21
3-Mar-21	7.6	<0.1	1.6	0.04	10	3	<1	<1	16-Mar-21	18-Mar-21
31-Mar-21	8.2	0.2	3.3	0.04	7	<2	<1	6	14-Apr-21	19-Apr-21
28-Apr-21	8.3	1.1	7.8	0.08	13	4	<1	65	06-May-21	10-May-21
26-May-21	8.2	0.5	4.7	0.03	8	2	<1	10	09-Jun-21	09-Jun-21
23-Jun-21	7.9	0.2	5.5	0.01	5	<2	<1	<1	30-Jun-21	01-Jul-21
21-Jul-21	7.8	0.3	4.0	0.02	6	<2	<1	1	30-Jul-21	02-Aug-21
18-Aug-21	8.1	0.8	6.7	0.03	7	<2	<1	<1	25-Aug-21	26-Aug-21
15-Sep-21	8.2	<0.1	6.7	0.04	6	2	<1	4	24-Sep-21	05-Oct-21

Monitoring point 2 – Ambient water quality monitoring (Sawpit Creek Upstream)

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
14-Oct-20	7.3	0.003	0.14	0.02	3	<2	10	22-Oct-20	31-Oct-20
11-Nov-20	7.8	0.006	0.14	0.02	3	<2	5	23-Nov-20	30-Nov-20
09-Dec-20	7.7	0.002	0.12	<0.01	<2	<2	17	21-Dec-20	22-Dec-20
06-Jan-21	7.9	0.018	0.18	0.01	2	<2	31	18-Jan-21	20-Jan-21
03-Feb-21	7.8	0.022	0.07	<0.01	<2	<2	33	12-Feb-21	18-Feb-21
03-Mar-21	7.5	0.005	0.07	<0.01	<2	<2	180	16-Mar-21	18-Mar-21
31-Mar-21	6.3	0.003	0.13	<0.01	<2	<2	30	14-Apr-21	19-Apr-21
28-Apr-21	8.0	<0.002	0.08	<0.01	<2	<2	3	06-May-21	10-May-21
26-May-21	7.9	<0.002	0.24	0.02	17	<2	14	09-Jun-21	09-Jun-21
23-Jun-21	8.0	0.003	0.13	<0.01	<2	<2	2	30-Jun-21	01-Jul-21
21-Jul-21	8.0	0.011	0.10	<0.01	<2	<2	4	30-Jul-21	02-Aug-21
18-Aug-21	8.2	0.004	0.11	<0.01	<2	<1	<1	25-Aug-21	26-Aug-21
15-Sep-21	8.2	0.003	0.11	<0.01	<2	<2	24	24-Sep-21	05-Oct-21

Monitoring point 3 – Ambient water quality monitoring (Sawpit Creek Downstream)

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
14-Oct-20	7.2	0.002	0.14	0.02	3	<2	15	22-Oct-20	31-Oct-20
11-Nov-20	7.4	0.004	0.15	0.01	2	<2	12	23-Nov-20	30-Nov-20
09-Dec-20	7.5	0.003	0.12	<0.01	<2	<2	17	21-Dec-20	22-Dec-20
06-Jan-21	7.6	0.015	0.17	0.01	3	<2	23	18-Jan-21	20-Jan-21
03-Feb-21	7.4	0.018	0.07	0.01	<2	<2	56	12-Feb-21	18-Feb-21
03-Mar-21	7.4	0.003	0.08	<0.01	<2	<2	416	16-Mar-21	18-Mar-21
31-Mar-21	6.8	<0.002	0.13	<0.01	<2	<2	4	14-Apr-21	19-Apr-21
28-Apr-21	7.8	0.013	0.07	<0.01	<2	<2	2	06-May-21	10-May-21
26-May-21	7.8	<0.002	0.20	0.02	10	<2	12	09-Jun-21	09-Jun-21
23-Jun-21	7.8	<0.002	0.13	<0.01	<2	<2	2	30-Jun-21	01-Jul-21
21-Jul-21	7.8	0.017	0.10	<0.01	<2	<2	1	30-Jul-21	02-Aug-21
18-Aug-21	7.9	0.004	0.11	<0.01	<2	<1	<1	25-Aug-21	26-Aug-21
15-Sep-21	8.0	0.006	0.13	<0.01	<2	<2	10	24-Sep-21	05-Oct-21

2019–2020 data

Monitoring point 1 – Discharge to groundwater effluent quality monitoring

The outlet from the final treatment pond to an underground absorption trench.

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Oil & grease (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
16-Oct-19	8.8	<0.1	0.4	<0.01	15	5	<1	<2	28-Oct-19	4-Nov-19
13-Nov-19	8.5	<0.1	5.1	0.12	23	10	<1	<1	28-Nov-19	4-Dec-19
11-Dec-19	8.6	<0.1	2.3	0.04	10	4	<1	<1	9-Jan-20	14-Jan-20
8-Jan-20	8.2	0.4	3.6	0.07	7	7	<1	8	11-Feb-20	17-Feb-20
12-Feb-20	8.3	<0.1	2.2	0.04	7	<2	<1	<2	25-Feb-20	26-Feb-20
4-Mar-20	8.5	0.3	4.4	0.04	12	5	<1	2	19-Mar-20	24-Mar-20
1-Apr-20	8.4	0.1	3.0	0.03	20	5	<1	<2	17-Apr-20	20-Apr-20
30-Apr-20	8.3	0.3	6.1	0.03	6	<2	<1	<1	11-May-20	14-May-20
27-May-20	8.1	0.4	4.9	0.04	7	3	<1	2	5-Jun-20	11-Jun-20
24-Jun-20	8.1	0.4	5.3	0.01	3	<2	<1	<2	3-Jul-20	11-Jul-20
22-Jul-20	8.0	0.2	5.1	<0.01	<2	<2	<1	1	30-Jul-20	5-Aug-20
19-Aug-20	8.1	<0.1	4.8	0.03	2	<2	<1	2	31-Aug-20	14-Sep-20
16-Sep-20	8.9	<0.1	2.5	0.02	4	<2	<1	<1	24-Sep-20	1-Oct-20

Monitoring point 2 – Ambient water quality monitoring (Sawpit Creek Upstream)

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
16-Oct-19	7.5	0.013	0.23	0.01	3	<2	<2	28-Oct-19	4-Nov-19
13-Nov-19	7.4	0.024	0.14	<0.01	<2	<2	14	28-Nov-19	4-Dec-19
11-Dec-19	7.6	0.020	0.08	0.02	2	<2	8	9-Jan-20	14-Jan-20
8-Jan-20	7.5	0.008	0.16	0.02	2	<2	105	11-Feb-20	17-Feb-20
12-Feb-20	7.0	0.021	0.35	0.02	4	<2	74	25-Feb-20	26-Feb-20
4-Mar-20	7.5	0.006	0.12	<0.01	3	<2	402	19-Mar-20	24-Mar-20
1-Apr-20	7.5	0.002	0.10	<0.01	<2	<2	6	17-Apr-20	20-Apr-20
20-Apr-20	7.5	0.009	0.38	0.02	7	<2	25	11-May-20	14-May-20
27-May-20	7.5	<0.002	0.13	<0.01	<2	<2	66	5-Jun-20	11-Jun-20
24-Jun-20	7.5	<0.002	0.12	<0.01	<2	<2	<2	3-Jul-20	11-Jul-20
22-Jul-20	7.4	0.011	0.13	0.01	<2	<2	2	30-Jul-20	5-Aug-20
19-Aug-20	7.7	0.004	0.15	0.02	2	<2	<1	31-Aug-20	14-Sep-20
16-Sep-20	7.8	0.005	0.12	<0.01	<2	<2	16	24-Sep-20	1-Oct-20

Monitoring point 3 – Ambient water quality monitoring (Sawpit Creek Downstream)

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
16-Oct-19	7.3	0.002	0.14	0.01	<2	<2	6	28-Oct-19	4-Nov-19
13-Nov-19	7.4	0.010	0.14	<0.01	2	<2	10	28-Nov-19	4-Dec-19
11-Dec-19	7.5	0.026	0.11	0.02	2	<2	15	9-Jan-20	14-Jan-20
8-Jan-20	7.4	0.005	0.15	0.02	2	<2	109	11-Feb-20	17-Feb-20
12-Feb-20	7.1	0.019	0.37	0.02	6	<2	76	25-Feb-20	26-Feb-20
4-Mar-20	7.3	0.017	0.13	<0.01	2	<2	84	19-Mar-20	24-Mar-20
1-Apr-20	7.4	0.038	0.11	<0.01	<2	<2	12	17-Apr-20	20-Apr-20
30-Apr-20	7.1	0.011	0.39	0.02	9	<2	24	11-May-20	14-May-20
27-May-20	7.2	<0.002	0.13	<0.01	<2	<2	6	5-Jun-20	11-Jun-20
24-Jun-20	7.2	<0.002	0.12	<0.01	<2	<2	<2	3-Jul-20	11-Jul-20
22-Jul-20	7.0	0.009	0.15	0.01	<2	<2	2	30-Jul-20	5-Aug-20
19-Aug-20	7.3	0.005	0.19	0.02	2	<2	1	31-Aug-20	14-Sep-20
16-Sep-20	7.5	0.009	0.12	<0.01	<2	<2	55	24-Sep-20	1-Oct-20

2018–2019 data

Monitoring point 1 – Discharge to groundwater effluent quality monitoring

The outlet from the final treatment pond to an underground absorption trench.

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Oil & grease (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
17-Oct-18	8.3	0.1	2.4	0.04	10	<2	<1	<2	31-Oct-18	06-Nov-18
14-Nov-18	8.5	0.2	4.1	0.06	9	<2	<1	<2	26-Nov-18	03-Dec-18
12-Dec-18	8.5	0.2	2.5	0.02	4	<2	<1	<2	24-Dec-18	10-Jan-19
09-Jan-19	8.2	<0.1	2.7	0.03	7	<2	<1	<2	04-Feb-19	08-Feb-19
06-Feb-19	8.2	0.1	2.9	0.04	20	6	<1	<2	22-Feb-19	08-Mar-19
06-Mar-19	8.4	0.9	2.6	0.05	6	2	<1	<2	23-Mar-19	08-Apr-19
03-Apr-19	8.3	<0.1	4.6	0.04	10	4	<1	12	30-Apr-19	10-May-19
01-May-19	8.1	<0.1	3.2	0.06	8	<2	<1	<2	16-May-19	20-May-19
29-May-19	8.4	<0.1	2.4	0.17	14	7	<1	<2	17-Jun-19	24-Jun-19
26-Jun-19	8.3	0.8	7.1	0.05	10	2	<1	<2	9-Jul-19	9-Jul-19
24-Jul-19	8.3	0.6	6.3	0.10	6	5	<1	<2	6-Aug-19	19-Aug-19
21-Aug-19	8.2	<0.1	5.2	0.16	9	4	<1	<1	9-Sep-19	17-Sep-19
18-Sep-19	8.2	0.2	4.4	0.11	8	4	<1	<1	27-Sep-19	1-Oct-19

Monitoring point 2 – Ambient water quality monitoring (Sawpit Creek Upstream)

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
17-Oct-18	7.4	0.003	0.17	0.01	<2	<2	8	31-Oct-18	06-Nov-18
14-Nov-18	7.4	0.002	0.13	0.01	4	<2	16	26-Nov-18	03-Dec-18
12-Dec-18	7.5	<0.002	0.22	0.03	25	<2	<2	24-Dec-18	10-Jan-19
09-Jan-19	7.3	0.002	0.40	0.03	16	<2	180	04-Feb-19	08-Feb-19
06-Feb-19	7.3	0.012	0.30	0.02	7	<2	102	22-Feb-19	08-Mar-19
06-Mar-19	7.6	0.009	0.14	0.02	4	<2	186	23-Mar-19	08-Apr-19
03-Apr-19	7.4	0.020	0.13	0.01	<2	<2	4	30-Apr-19	10-May-19
01-May-19	7.4	0.022	0.10	0.01	<2	<2	<2	16-May-19	20-May-19
29-May-19	7.2	0.029	0.40	0.06	33	<2	14	17-Jun-19	24-Jun-19
26-Jun-19	7.4	0.018	0.09	0.02	<2	<2	<2	9-Jul-19	9-Jul-19
24-Jul-19	7.3	<0.002	0.16	0.01	6	<2	<2	6-Aug-19	19-Aug-19
21-Aug-19	7.2	0.004	0.12	0.01	<2	<2	<1	9-Sep-19	17-Sep-19
18-Sep-19	7.3	<0.002	0.18	0.01	<2	<2	7	27-Sep-19	1-Oct-19

Monitoring point 3 – Ambient water quality monitoring (Sawpit Creek Downstream)

Sample date	pH	Nitrogen – ammonia (mg/L)	Nitrogen – total (mg/L)	Phosphorus total (mg/L)	Total suspended solids (mg/L)	Biochemical oxygen demand (mg/L)	Faecal coliforms (cfu/100mL)	Data obtained	Data published
17-Oct-18	7.3	0.002	0.13	0.01	<2	<2	4	31-Oct-18	06-Nov-18
14-Nov-18	7.4	0.004	0.11	0.01	<2	<2	10	26-Nov-18	03-Dec-18
12-Dec-18	7.4	<0.002	0.14	0.02	<2	<2	4	24-Dec-18	10-Jan-19
09-Jan-19	7.3	0.004	0.40	0.04	14	<2	418	04-Feb-19	08-Feb-19
06-Feb-19	7.3	0.009	0.31	0.02	7	<2	380	22-Feb-19	08-Mar-19
06-Mar-19	7.5	0.010	0.13	0.02	8	<2	220	23-Mar-19	08-Apr-19
03-Apr-19	7.4	0.022	0.13	0.01	<2	<2	4	30-Apr-19	10-May-19
01-May-19	7.4	0.023	0.16	0.02	2	<2	2	16-May-19	20-May-19
29-May-19	7.2	0.028	0.33	0.05	28	<2	42	17-Jun-19	24-Jun-19
26-Jun-19	7.3	0.018	0.09	0.02	<2	<2	<2	9-Jul-19	9-Jul-19
24-Jul-19	7.1	<0.002	0.18	0.02	8	<2	<2	6-Aug-19	19-Aug-19
21-Aug-19	7.2	0.005	0.14	0.01	<2	<2	<1	9-Sep-19	17-Sep-19
18-Sep-19	7.1	<0.002	0.17	0.01	<2	<2	6	27-Sep-19	1-Oct-19