Perisher Sewage Treatment Plant: Pollutant monitoring data archive | Park management

Licence

View the Environment Protection Licence No. 1797 terms and conditions.

Licensee

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

Premises

Perisher Sewage Treatment System including the STP at North Perisher Road, Perisher Valley NSW 2624

Monitoring points

There are 3 monitoring points:

Monitoring Point 1 – Discharge from UV chamber
Monitoring Point 2 – Perisher Creek Upstream
Monitoring Point 3 – Perisher Creek Downstream.

View map of monitoring points (PDF 639KB).

The monitoring frequency required by Environment Protection Licence No. 1797 for all points is:

fortnightly from July to October inclusive
monthly from November to June inclusive.

Pollutant monitoring data

Regular monitoring and reporting of specified pollutants is required by Environment Protection Licence No. 1797:

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

2023–2024 data

Monitoring point 1 – Discharge to waters effluent quality monitoring

Discharge from the UV chamber to Perisher Creek.

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)	Total aluminium (mg/L)	Data obtained	Data published
14-Jun-23	7.3	0.1	1.7	0.03	7	<2	<1	<1	2.01	30-Jun-23	19-Jul-23
28-Jun-23	7.7	<0.01	2.2	0.31	5	<2	<1	4.0	0.36	24-Jul-23	28-Jul-23
12-Jul-23	7.5	0.8	4.7	0.12	5	<2	2	1.0	0.68	11-Aug-23	14-Aug-23
26-Jul-23	7.5	1.2	4.0	0.13	7	2	<1	1.0	0.65	10-Aug-23	11-Aug-23
09-Aug-23	7.0	1.4	5.7	0.48	50	6	<1	<1	20.40	24-Aug-23	6-Sept-23
23-Aug-23	7.8	1.0	2.3	0.03	5	3	<1	<1	0.82	4-Sep-23	6-Sep-23
06-Sep-23	7.9	0.2	2.2	0.05	4	<2	<1	<1	0.48	20-Sep-23	20-Sep-23
20-Sep-23	8.2	1.2	4.6	0.12	9	4	<1	<1	0.82	29-Sep-23	3-Oct-23
18-Oct-23	8.5	<0.1	3.1	0.19	16	6	<1	<1	0.41	31-Oct-23	1-Nov-23
01-Nov-23	7.7	<0.1	0.4	0.04	4	<2	<1	<1	0.24	14-Nov-23	15-Nov-23
29-Nov-23	6.8	0.2	1.1	0.06	5	<2	<1	4.0	0.21	8-Dec-23	12-Dec-23
27-Dec-23	6.8	0.4	1.5	0.12	11	<2	<1	<1	0.97	9-Jan-24	12-Jan-24
24-Jan-24	7.0	<0.1	0.4	0.02	<2	<2	<1	<1	0.11	7-Feb-24	15-Feb-24
21-Feb-24	8.0	0.2	3.7	0.02	8	3	<1	18	0.30	6-Mar-24	7-Mar-24
20-Mar-24	7.5	<0.1	0.1	<0.1	<2	<2	<1	3	0.08	3-Apr-24	9-Apr-24
17-Apr-24	7.5	<0.1	2.3	0.02	2	<2	<1	<1	0.40	1-May-24	2-May-24
15-May-24	7.9	0.1	3.0	0.19	6	3	<1	<1	0.14	23-May-24	3-Jun-24

Monitoring point 2 – Ambient water monitoring (Perisher Creek upstream)

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)	Total aluminium (mg/L)	Data obtained	Data published
14-Jun-23	7.4	0.021	0.09	<0.01	<2	<2	<1	0.08	30-Jun-23	19-Jul-23
28-Jun-23	7.3	0.017	0.14	<0.01	2	<2	<1	0.10	24-Jul-23	28-Jul-23
12-Jul-23	6.4	0.003	0.08	<0.01	<2	<2	3	0.14	11-Aug-23	14-Aug-23
26-Jul-23	7.3	0.019	0.07	<0.01	<2	<2	<1	0.05	10-Aug-23	11-Aug-23
09-Aug-23	7.1	<0.002	0.08	<0.01	<2	<2	<1	0.08	24-Aug-23	6-Sept-23
23-Aug-23	6.7	0.003	0.10	<0.01	2	<2	<1	0.11	4-Sep-23	6-Sep-23
06-Sep-23	7.2	0.013	0.07	<0.01	<2	<2	<1	0.08	20-Sep-23	20-Sep-23
20-Sep-23	7.7	<0.002	0.15	<0.01	2	<2	<1	0.11	29-Sep-23	3-Oct-2023
18-Oct-23	7.8	0.004	0.06	<0.01	<2	<2	<1	0.07	31-Oct-23	1-Nov-23
01-Nov-23	7.6	0.014	0.07	<0.01	<2	<2	<1	0.06	14-Nov-23	15-Nov-23
29-Nov-23	6.8	0.004	0.32	0.01	10	<2	64	0.33	8-Dec-23	12-Dec-23
27-Dec-23	6.8	0.005	0.16	<0.01	<2	<2	1	0.16	9-Jan-24	12-Jan-24
24-Jan-24	7.0	<0.002	0.10	<0.01	<2	<2	4	0.08	7-Feb-24	15-Feb-24
21-Feb-24	7.4	<0.002	0.12	<0.01	2	<2	15	0.06	6-Mar-24	7-Mar-24
20-Mar-24	7.1	<0.002	0.21	<0.01	7	<2	142	0.22	3-Apr-24	9-Apr-24
17-Apr-24	7.4	0.003	0.10	0.01	2	<2	<1	0.08	1-May-24	2-May-24
15-May-24	7.5	0.007	0.14	0.04	<2	<2	<1	0.08	23-May-24	3-Jun-24

Monitoring point 3 – Ambient water monitoring (Perisher Creek downstream)

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)	Total aluminium (mg/L)	Data obtained	Data published
14-Jun-23	6.9	0.023	0.64	0.02	5	<2	1	0.68	30-Jun-23	19-Jul-23
28-Jun-23	6.9	0.018	0.14	0.01	10	<2	4	0.25	24-Jul-23	28-Jul-23
12-Jul-23	6.6	0.024	0.23	<0.01	<2	<2	3	0.18	11-Aug-23	14-Aug-23
26-Jul-23	7.1	0.090	0.37	0.01	<2	<2	<1	0.13	10-Aug-23	11-Aug-23
09-Aug-23	6.7	<0.002	0.07	<0.01	<2	<2	<1	0.08	24-Aug-23	6-Sept-23
23-Aug-23	6.5	0.005	0.10	<0.01	2	<2	<1	0.10	4-Sept-23	6-Sept-23
06-Sep-23	6.9	0.008	0.07	<0.01	<2	<2	2	0.08	20-Sep-23	20-Sep-23
20-Sep-23	7.4	0.013	0.14	<0.01	3	<2	1	0.10	29-Sep-23	3-Oct-2023
18-Oct-23	7.0	0.004	0.08	<0.01	<2	<2	<1	0.07	31-Oct-23	1-Nov-23
01-Nov-23	7.3	0.014	0.06	<0.01	<2	<2	1	0.06	14-Nov-23	15-Nov-23
29-Nov-23	6.7	0.003	0.30	0.01	10	<2	62	0.37	8-Dec-23	12-Dec-23
27-Dec-23	6.6	<0.002	0.15	<0.01	<2	<2	1	0.15	9-Jan-24	12-Jan-24
24-Jan-24	7.0	<0.002	0.10	<0.01	<2	<2	4	0.08	7-Feb-24	15-Feb-24
21-Feb-24	7.1	<0.002	0.10	<0.01	2	<2	15	0.07	6-Mar-24	7-Mar-24
20-Mar-24	6.9	0.005	0.20	<0.01	7	<2	134	0.24	3-Apr-24	9-Apr-24
17-Apr-24	7.2	0.006	0.10	0.01	<2	<2	<1	0.07	1-May-24	2-May-24
15-May-24	7.1	0.007	0.14	0.04	<2	<2	<1	0.08	23-May-24	3-Jun-24

2022–2023 data

Monitoring point 1 – Discharge to waters effluent quality monitoring

Discharge from the UV chamber to Perisher Creek.

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)	Total aluminium (mg/L)	Data obtained	Data published
08-Jun-21	7.2	<0.1	1.5	<0.01	23	28	<1	840.0	0.65	21-Jun-22	12-July-22
06-Jul-22	7.5	0.3	2.0	0.05	<2	<2	<1	<2	0.23	14-Jul-22	21-Jul-22
20-Jul-22	7.2	0.3	2.6	0.02	4	<2	<1	<1	0.38	4-Aug-22	9-Aug-22
03-Aug-22	7.8	0.1	2.4	0.05	2	<2	<1	2.0	0.08	16-Aug-22	16-Aug-22
17-Aug-22	7.8	0.5	4.1	0.08	6	<2	<1	<1	0.52	30-Aug-22	30-Aug-22
31-Aug-22	7.7	1.0	3.7	0.18	6	<2	<1	3.0	0.62	8-Sep-22	20-Sep-22
14-Sep-22	7.0	1.3	3.4	0.08	6	6	<1	<1	0.43	23-Sep-22	4-Oct-22
28-Sep-22	7.6	0.6	2.1	0.14	12	3	<1	<1	0.73	11-Oct-22	17-Oct-22
26-Oct-22	7.8	1.1	5.1	0.14	11	6	<1	<1	0.67	7-Nov-22	23-Nov-22
23-Nov-22	7.4	1.0	2.4	0.08	5	4	<1	<1	0.26	5-Dec-22	8-Dec-22
21-Dec-22	7.8	0.5	3.0	0.08	4	<2	<1	<1	0.07	4-Jan-23	9-Jan-22
24-Jan-23	7.1	0.2	1.8	<0.01	5	53	<1	<1	0.29	6-Feb-23	16-Feb-23
22-Feb-23	6.9	<0.1	0.9	0.04	3	<2	<1	1.0	0.08	6-Mar-23	8-Mar-23
22-Mar-23	7.6	0.2	3.5	0.05	3	2	<1	2.0	0.05	31-Mar-23	4-Apr-23
19-Apr-23	8.0	<0.1	2.4	0.16	6	<2	<1	<1	0.39	5-May-23	9-May-23
17-May-23	8.1	0.2	3.7	0.09	6	3	<1	<1	0.64	13-Jun-23	19-Jun-23

Monitoring point 2 – Ambient water monitoring (Perisher Creek upstream)

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)	Total aluminium (mg/L)	Data obtained	Data published
08-Jun-22	6.7	<0.002	0.07	<0.01	<2	<2	<1	0.04	21-Jun-22	12-Jul-22
06-Jul-22	7.2	0.026	0.10	<0.01	<2	<2	<1	0.06	14-Jul-22	21-Jul-22
20-Jul-22	6.7	0.002	0.09	<0.01	2	<2	<1	0.05	4-Aug-22	9-Aug-22
03-Aug-22	6.9	0.018	<0.05	<0.01	<2	<2	<1	0.05	16-Aug-22	16-Aug-22
17-Aug-22	6.8	<0.002	0.10	<0.01	<2	<2	<1	0.08	30-Aug-22	30-Aug-22
31-Aug-22	6.9	<0.002	0.12	<0.01	<2	<2	9	0.09	8-Sep-22	20-Sep-22
14-Sep-22	6.6	<0.002	0.06	<0.01	<2	<2	<1	0.07	23-Sep-22	4-Oct-22
28-Sep-22	7.1	0.024	0.18	0.01	14	<2	12	0.44	11-Oct-22	17-Oct-22
26-Oct-22	6.8	<0.002	0.09	<0.01	<2	<2	2	0.09	7-Nov-22	23-Nov-22
23-Nov-22	6.6	<0.002	0.10	<0.01	<2	<2	<1	0.10	5-Dec-22	8-Dec-22
21-Dec-22	6.7	0.003	0.07	<0.01	<2	<2	<1	0.07	4-Jan-23	9-Jan-23
24-Jan-23	6.5	0.004	0.15	<0.01	2	<2	11	0.10	6-Feb-23	16-Feb-23
22-Feb-23	6.8	0.006	0.10	<0.01	<2	<2	54	0.08	6-Mar-23	8-Mar-23
22-Mar-23	6.3	<0.002	0.14	<0.01	5	2	120	0.19	31-Mar-23	4-Apr-23
19-Apr-23	7.4	0.006	0.09	<0.01	<2	<2	1	0.09	05-May-23	9-May-23
17-May-23	7.4	0.013	<0.05	<0.01	<2	<2	<1	0.07	13-Jun-23	19-Jun-23

Monitoring point 3 – Ambient water monitoring (Perisher Creek downstream)

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)	Total aluminium (mg/L)	Data obtained	Data published
08-Jun-22	6.6	<0.002	<0.05	<0.01	<2	<2	<1	<0.05	21-Jun-22	12-July-22
06-Jul-22	7.2	0.028	0.19	<0.01	<2	<2	3	0.06	14-Jul-22	21-Jul-22
20-Jul-22	6.8	0.022	0.30	<0.01	<2	<2	<1	0.07	4-Aug-22	9-Aug-22
03-Aug-22	7.2	0.019	0.37	<0.01	<2	<2	4	0.10	16-Aug-22	16-Aug-22
17-Aug-22	6.9	0.010	0.20	<0.01	<2	<2	3	0.08	30-Aug-22	30-Aug-22
31-Aug-22	6.8	<0.002	0.12	<0.01	<2	<2	3	0.10	8-Sep-22	30-Aug-22
14-Sep-22	6.5	0.004	0.11	<0.01	<2	<2	<1	0.07	23-Sep-22	4-Oct-22
28-Sep-22	6.7	0.004	0.12	<0.01	14	<2	9	0.42	11-Oct-22	17-Oct-22
26-Oct-22	6.7	0.005	0.11	<0.01	<2	<2	<2	0.09	7-Nov-22	23-Nov-22
23-Nov-22	6.5	0.003	0.13	<0.01	<2	<2	1	0.10	5-Dec-22	8-Dec-22
21-Dec-22	6.7	0.003	0.07	<0.01	2	<2	<1	0.07	4-Jan-23	9-Jan-23
24-Jan-23	6.5	0.003	0.13	<0.01	2	<2	16	0.11	6-Feb-23	16-Feb-23
22-Feb-23	6.7	0.004	0.09	<0.01	4	<2	70	0.08	6-Mar-23	8-Mar-23
22-Mar-23	6.8	0.029	0.56	0.01	4	<2	116	0.15	31-Mar-23	4-Apr-23
19-Apr-23	7.2	<0.002	0.09	<0.01	<2	<2	<1	0.12	5-May-23	9-May-23
17-May-23	7.0	<0.002	<0.05	<0.01	<2	<2	2	0.06	13-Jun-23	19-Jun-23

2021–2022 data

Monitoring point 1 – Discharge to waters effluent quality monitoring

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)	Total aluminium (mg/L)	Data obtained	Data published
09-Jun-21	7.5	0.5	2.7	0.22	8	<2	<1	<1	1.92	22-Jun-21	22-Jun-21
23-Jun-21	7.3	0.3	4.4	0.02	3	<2	<1	<1	0.58	05-Jul-21	05-Jul-21
07-Jul-21	7.4	0.4	4.3	0.16	5	<2	<1	<1	0.50	16-Jul-21	19-Jul-21
21-Jul-21	7.5	1.2	2.9	0.03	2	<2	<1	<1	0.43	30-Jul-21	02-Aug-21
04-Aug-21	7.3	2.0	7.2	0.09	3	<2	<1	1	0.54	17-Aug-21	17-Aug-21
18-Aug-21	7.4	0.1	3.8	0.02	3	<2	<1	<1	0.50	25-Aug-21	26-Aug-21
01-Sep-21	7.5	0.2	3.5	0.03	6	<2	<1	<1	0.45	10-Sep-21	10-Sep-21
15-Sep-21	7.4	0.9	4.6	0.06	8	4	<1	<1	0.50	27-Sep-21	05-Oct-21
29-Sep-21	7.4	0.3	4.9	0.06	2	<2	<1	1	0.09	11-Oct-21	12-Oct-21
27-Oct-21	7.7	0.4	2.9	0.06	7	2	<1	<1	0.10	08-Nov-21	08-Dec-21
24-Nov-21	7.3	0.2	2.7	0.06	3	<2	<1	<1	0.14	06-Dec-21	08-Dec-21
22-Dec-21	7.0	<0.1	3.1	0.03	<2	<2	<1	<1	0.06	05-Jan-22	13-Jan-22
19-Jan-22	7.5	<0.1	0.2	<0.01	8	<2	<1	<1	0.33	31-Jan-22	01-Feb-22
16-Feb-22	8.1	1.5	4.3	0.04	3	<2	<1	<1	0.28	24-Feb-22	01-Mar-22
16-Mar-22	7.8	0.2	4.1	0.03	2	<2	<1	1	0.23	25-Mar-22	30-Mar-22
13-Apr-22	7.2	0.4	2.0	0.04	5	<2	<1	9	0.13	27-Apr-22	28-Apr-22
11-May-22	8.1	0.3	4.6	0.08	5	8	<1	<1	0.18	20-May-22	30-May-22

Monitoring point 2 – Ambient water monitoring (Perisher Creek upstream)

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)	Total aluminium (mg/L)	Data obtained	Data published
09-Jun-21	7.6	<0.002	0.07	<0.01	<2	<2	<1	0.06	09-Jun-21	22-Jun-21
23-Jun-21	7.6	<0.002	0.07	<0.01	<2	<2	<1	0.06	05-Jul-21	05-Jul-21
07-Jul-21	7.7	<0.002	0.06	<0.01	<2	<2	1	0.06	16-Jul-21	19-Jul-21
21-Jul-21	7.5	0.007	0.09	<0.01	<2	<2	<1	0.06	30-Jul-21	02-Aug-21
04-Aug-21	7.7	0.006	0.08	<0.01	<2	<2	1	0.09	17-Aug-21	17-Aug-21
18-Aug-21	7.5	0.006	0.08	<0.01	<2	<2	<1	0.06	25-Aug-21	26-Aug-21
01-Sep-21	7.8	0.005	0.07	<0.01	<2	<2	1	0.06	10-Sep-21	10-Sep-21
15-Sep-21	7.5	0.010	0.07	<0.01	<2	<2	<1	0.06	27-Sep-21	05-Oct-21
29-Sep-21	7.7	0.007	0.12	<0.01	<2	<2	7	0.20	11-Oct-21	12-Oct-21
27-Oct-21	7.8	0.002	0.10	<0.01	<2	<2	<1	0.08	08-Nov-21	08-Dec-21
24-Nov-21	7.6	0.002	0.07	<0.01	<2	<2	3	0.08	06-Dec-21	08-Dec-21
22-Dec-21	6.6	<0.002	0.08	<0.01	<2	<2	5	0.10	05-Jan-22	13-Jan-22
19-Jan-22	7.7	<0.002	0.11	<0.01	<2	<2	6	0.10	31-Jan-22	01-Feb-22
16-Feb-22	7.1	0.018	0.11	<0.01	2	<2	6	0.09	24-Feb-22	01-Mar-22
16-Mar-22	6.7	0.009	0.10	<0.01	<2	<2	1	0.09	25-Mar-22	30-Mar-22
13-Apr-22	7.3	0.008	0.09	<0.01	3	<2	<1	0.09	27-Apr-22	28-Apr-22
11-May-22	7.1	<0.002	0.09	<0.01	<2	<2	<1	0.07	20-May-22	30-May-22

Monitoring point 3 – Ambient water monitoring (Perisher Creek downstream)

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)	Total aluminium (mg/L)	Data obtained	Data published
09-Jun-21	7.5	0.005	0.16	<0.01	<2	<2	<1	0.08	09-Jun-21	22-Jun-21
23-Jun-21	7.5	<0.002	<0.05	<0.01	<2	<2	1	0.06	05-Jul-21	05-Jul-21
07-Jul-21	7.7	0.005	0.14	<0.01	<2	<2	<1	0.07	16-Jul-21	19-Jul-21
21-Jul-21	7.3	0.020	0.09	<0.01	4	<2	1	0.14	30-Jul-21	02-Aug-21
04-Aug-21	7.4	0.018	0.09	<0.01	<2	<2	1	0.08	17-Aug-21	17-Aug-21
18-Aug-21	7.1	0.008	0.19	<0.01	<2	<2	<1	0.07	25-Aug-21	26-Aug-21
01-Sep-21	7.6	0.019	0.30	<0.01	<2	<2	<1	0.07	10-Sep-21	10-Sep-21
15-Sep-21	7.3	0.016	0.15	<0.01	<2	<2	<1	0.06	27-Sep-21	05-Oct-21
29-Sep-21	7.6	0.006	0.08	<0.01	3	<2	5	0.12	11-Oct-21	12-Oct-21
27-Oct-21	7.6	0.046	0.13	0.02	<2	<2	<1	0.09	08-Nov-21	08-Dec-21
24-Nov-21	6.8	0.002	<0.05	<0.01	<2	<2	<1	0.02	06-Dec-21	08-Dec-21
22-Dec-21	6.5	0.011	0.07	<0.01	<2	<2	5	0.10	05-Jan-22	13-Jan-22
19-Jan-22	7.4	0.013	0.11	<0.01	<2	<2	3	0.10	31-Jan-22	01-Feb-22
16-Feb-22	7.0	0.016	0.17	<0.01	2	<2	8	0.09	24-Feb-22	01-Mar-22
16-Mar-22	6.7	0.012	0.10	<0.01	<2	<2	3	0.09	25-Mar-22	30-Mar-22
13-Apr-22	7.2	0.008	0.09	<0.01	<2	<2	3	0.09	27-Apr-22	28-Apr-22
11-May-22	6.9	<0.002	0.09	<0.01	<2	<2	<1	0.07	20-May-22	30-May-22

2020–2021 data

Monitoring point 1 – Discharge to waters effluent quality monitoring

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)	Total aluminium (mg/L)	Data obtained	Data published
24-Jun-20	7.9	<0.1	2.1	0.09	3	<2	<1	<1	0.06	3-Jul-20	12-Jul-20
8-Jul-20	7.7	0.9	5.1	0.18	5	2	<1	8	0.06	16-Jul-20	21-Jul-20
22-Jul-20	7.9	0.1	1.6	0.13	<2	<2	<1	<1	0.11	31-Jul-20	5-Aug-20
05-Aug-20	7.6	0.5	2.9	0.08	2	<2	<1	<1	0.25	13-Aug-20	18-Aug-20
19-Aug-20	7.3	0.4	3.9	0.09	4	<2	<1	1	0.39	31-Aug-20	14-Sep-20
02-Sep-20	7.8	0.3	4.5	0.18	9	3	<1	9	0.33	10-Sep-20	16-Sep-20
16-Sep-20	7.9	0.1	0.9	0.04	3	<2	<1	<1	0.30	24-Sep-20	1-Oct-20
30-Sep-20	7.8	0.5	3.0	0.11	4	<2	<1	9	0.50	13-Oct-20	15-Oct-20
14-Oct-20	7.6	<0.1	2.7	0.04	2	<2	<1	<1	0.10	23-Oct-20	31-Oct-20
11-Nov-20	7.9	<0.1	4.9	0.04	2	<2	<1	<1	0.11	19-Nov-20	30-Nov-20
09-Dec-20	7.9	0.1	2.7	0.04	<2	<2	<1	<1	0.05	21-Dec-20	22-Dec-20
06-Jan-21	7.6	<0.1	2.3	0.11	6	2	<1	6	0.21	18-Jan-21	20-Jan-21
03-Feb-21	8.1	<0.1	3.0	0.11	4	<2	<1	1	0.06	12-Feb-21	18-Feb-21
03-Mar-21	7.8	0.6	2.9	0.20	2	<2	<1	54	0.15	16-Mar-21	18-Mar-21
31-Mar-21	7.9	1.0	4.0	0.09	2	<2	<1	<2	0.11	14-Apr-21	19-Apr-21
28-Apr-21	8.3	0.3	3.6	0.07	2	3	<1	<1	0.08	06-May-21	10-May-21
26-May-21	7.5	2.1	3.3	0.12	8	<2	<1	1	0.92	08-Jun-21	10-Jun-21

Monitoring point 2 – Ambient water monitoring (Perisher Creek upstream)

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)	Total aluminium (mg/L)	Data obtained	Data published
24-Jun-20	7.2	0.010	0.08	<0.01	<2	<2	<1	0.09	3-Jul-20	12-Jul-20
8-Jul-20	7.3	<0.002	0.06	<0.01	<2	<2	<1	0.07	16-Jul-20	21-Jul-20
22-Jul-20	7.3	0.005	0.12	<0.01	<2	<2	<1	0.07	31-Jul-20	5-Aug-20
05-Aug-20	6.9	0.007	0.10	<0.01	<2	<2	<1	0.08	13-Aug-20	18-Aug-20
19-Aug-20	7.2	0.003	0.08	0.01	<2	<2	<1	0.06	31-Aug-20	14-Sep-20
02-Sep-20	7.0	0.004	0.10	<0.01	<2	<2	<1	0.07	10-Sep-20	16-Sep-20
16-Sep-20	7.6	0.002	0.08	<0.01	<2	<2	<1	0.08	24-Sep-20	1-Oct-20
30-Sep-20	7.4	<0.002	0.07	<0.01	<2	<2	4	0.07	13-Oct-20	15-Oct-20
14-Oct-20	7.4	0.003	0.10	<0.01	<2	<2	2	0.08	23-Oct-20	31-Oct-20
11-Nov-20	7.7	0.002	0.08	<0.01	<2	<2	<1	0.08	19-Nov-20	30-Nov-20
09-Dec-20	7.6	<0.002	0.09	<0.01	<2	<2	6	0.09	21-Dec-20	22-Dec-20
06-Jan-21	7.6	0.018	0.14	<0.01	<2	<2	7	0.11	18-Jan-21	20-Jan-21
03-Feb-21	7.7	<0.002	<0.05	<0.01	<2	<2	9	0.10	12-Feb-21	18-Feb-21
03-Mar-21	7.3	<0.002	0.08	<0.01	2	<2	34	0.06	16-Mar-21	18-Mar-21
31-Mar-21	7.5	0.008	0.09	<0.01	<2	<2	4	0.10	14-Apr-21	19-Apr-21
28-Apr-21	8.1	<0.002	0.08	<0.01	<2	<2	1	0.04	06-May-21	10-May-21
26-May-21	7.4	<0.002	0.16	<0.01	<2	<2	6	0.15	08-Jun-21	10-Jun-21

Monitoring point 3 – Ambient water monitoring (Perisher Creek downstream)

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)	Total aluminium (mg/L)	Data obtained	Data published
24-Jun-20	6.9	0.007	0.12	<0.01	<2	<2	1	0.07	3-Jul-20	12-Jul-20
8-Jul-20	6.9	0.028	0.24	0.01	5	<2	<1	0.16	16-Jul-20	21-Jul-20
22-Jul-20	6.9	<0.002	0.08	<0.01	<2	<2	<1	0.06	31-Jul-20	5-Aug-20
05-Aug-20	7.0	0.003	0.24	<0.01	<2	<2	<1	0.08	13-Aug-20	18-Aug-20
19-Aug-20	6.9	0.011	0.24	0.01	<2	<2	<1	0.08	31-Aug-20	14-Sep-20
02-Sep-20	7.0	0.018	0.18	<0.01	<2	<2	<1	0.08	10-Sep-20	16-Sep-20
16-Sep-20	7.3	0.004	0.11	<0.01	<2	<2	<1	0.08	24-Sep-20	1-Oct-20
30-Sep-20	7.1	0.003	0.11	<0.01	<2	<2	<1	0.08	13-Oct-20	15-Oct-20
14-Oct-20	7.1	<0.002	0.10	0.01	<2	<2	<1	0.08	23-Oct-20	31-Oct-20
11-Nov-20	7.3	0.012	0.06	<0.01	<2	<2	1	0.08	19-Nov-20	30-Nov-20
09-Dec-20	7.3	<0.002	0.14	<0.01	<2	<2	7	0.09	21-Dec-20	22-Dec-20
06-Jan-21	7.4	0.004	0.14	<0.01	2	<2	25	0.11	18-Jan-21	20-Jan-21
03-Feb-21	7.4	<0.002	0.09	<0.01	<2	<2	23	0.09	12-Feb-21	18-Feb-21
03-Mar-21	7.3	<0.002	0.06	<0.01	<2	<2	27	0.05	16-Mar-21	18-Mar-21
31-Mar-21	7.4	0.012	0.08	<0.01	<2	<2	6	0.09	14-Apr-21	19-Apr-21
28-Apr-21	7.9	<0.002	0.05	<0.01	<2	<2	<1	0.05	06-May-21	10-May-21
26-May-21	7.2	<0.002	0.15	<0.01	<2	<2	16	0.15	08-Jun-21	10-Jun-21

2019–2020 data

Monitoring point 1 – Discharge to waters effluent quality monitoring

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)	Total aluminium (mg/L)	Data obtained	Data published
26-Jun-19	7.7	0.6	3.5	0.34	4	<2	<1	6.0	0.38	9-Jul-19	9-Jul-19
10-Jul-19	7.9	0.6	6.3	0.22	8	<2	<1	<2	1.34	26-Jul-19	30-Jul-19
24-Jul-19	7.7	0.8	3.5	0.20	8	<2	<1	<2	0.74	6-Aug-19	15-Aug-19
7-Aug-19	7.8	1.4	3.8	0.31	3	<2	<1	<2	0.23	26-Aug-19	5-Sep-19
21-Aug-19	7.8	0.8	3.2	0.20	6	<2	<1	1	0.31	9-Sep-19	17-Sep-19
4-Sep-19	7.9	0.7	2.8	0.13	3	<2	<1	<1	0.20	16-Sep-19	1-Oct-19
18-Sep-19	7.8	0.5	3.0	0.14	4	<2	<1	<1	0.38	27-Sep-19	1-Oct-19
16-Oct-19	7.0	<0.1	0.7	0.02	14	<2	<1	<1	6.91	1-Nov-19	4-Nov-19
13-Nov-19	8.0	1.1	5.2	0.14	4	<1	<1	<1	0.15	28-Nov-19	4-Dec-19
11-Dec-19	7.7	<0.1	0.5	0.02	4	<2	<1	<1	0.20	9-Jan-20	14-Jan-20
08-Jan-20	8.2	<0.1	1.6	0.08	9	4	<1	110	0.15	24-Jan-20	17-Feb-20
12-Feb-20	8.1	0.2	3.7	0.12	3	<2	<1	<1	0.17	27-Feb-20	5-Mar-20
04-Mar-20	8.4	<0.1	3.2	0.23	10	4	<1	<1	0.50	19-Mar-20	24-Mar-20
1-Apr-20	8.3	<0.1	1.8	0.12	5	3	<1	<2	0.12	17-Apr-20	20-Apr-20
29-Apr-20	8.2	<0.1	1.6	0.05	4	2	<1	<1	0.04	11-May-20	14-May-20
27-May-20	8.1	0.6	6.3	0.14	4	<2	<1	<1	0.07	5-Jun-20	11-Jun-20

Monitoring point 2 – Ambient water monitoring (Perisher Creek upstream)

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)	Total aluminium (mg/L)	Data obtained	Data published
26-Jun-19	6.8	0.014	0.08	0.01	<2	<2	<2	0.06	9-Jul-19	9-Jul-19
10-Jul-19	6.9	0.002	0.17	0.01	4	<2	<2	0.13	26-Jul-19	30-Jul-19
24-Jul-19	6.8	0.016	0.12	<0.01	<2	<2	28	0.06	6-Aug-19	15-Aug-19
7-Aug-19	6.8	<0.002	0.07	<0.01	<2	<2	<1	0.05	26-Aug-19	5-Sep-19
21-Aug-19	6.9	0.021	0.11	<0.01	<2	<2	<1	0.06	9-Sep-19	17-Sep-19
4-Sep-19	6.9	0.011	0.06	<0.01	<2	<2	<1	0.08	16-Sep-19	1-Oct-19
18-Sep-19	6.8	0.003	0.17	<0.01	4	<2	<1	0.17	27-Sep-19	1-Oct-19
16-Oct-19	6.7	0.003	0.09	<0.01	<2	<2	<1	0.08	1-Nov-19	4-Nov-19
13-Nov-19	6.9	0.014	0.08	<0.01	<2	<2	<1	0.07	28-Nov-19	4-Dec-19
11-Dec-19	7.0	<0.002	<0.05	<0.01	<2	<2	1	0.05	9-Jan-20	14-Jan-20
08-Jan-20	7.2	0.050	0.12	<0.01	2	<2	8	0.07	24-Jan-20	17-Feb-20
12-Feb-20	6.6	0.033	0.20	<0.01	<2	<2	17	0.17	27-Feb-20	5-Mar-20
04-Mar-20	7.2	0.004	0.08	<0.01	<2	<2	18	0.07	19-Mar-20	24-Mar-20
01-Apr-20	7.3	0.015	0.08	<0.01	<2	<2	<2	0.07	17-Apr-20	20-Apr-20
30-Apr-20	7.1	0.008	0.21	0.03	<2	<2	17	0.64	11-May-20	14-May-20
27-May-20	7.2	<0.002	0.14	<0.01	<2	<2	<1	0.07	5-Jun-20	11-Jun-20

Monitoring point 3 – Ambient water monitoring (Perisher Creek downstream)

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)	Total aluminium (mg/L)	Data obtained	Data published
26-Jun-19	7.0	0.059	0.33	0.03	<2	<2	2	0.08	9-Jul-19	9-Jul-19
10-Jul-19	7.1	0.019	0.31	0.02	<2	<2	2	0.15	26-Jul-19	30-Jul-19
24-Jul-19	6.6	0.019	0.11	<0.01	<2	<2	5	0.05	6-Aug-19	15-Aug-19
7-Aug-19	7.2	0.110	0.38	0.02	<2	<2	<2	0.07	26-Aug-19	5-Sep-19
21-Aug-19	6.8	0.024	0.11	<0.01	<2	<2	<1	0.06	9-Sep-19	17-Sep-19
4-Sep-19	7.1	0.025	0.12	<0.01	<2	<2	<1	0.06	16-Sep-19	1-Oct-19
18-Sep-19	6.8	0.012	0.16	<0.01	<2	<2	<1	0.09	27-Sep-19	1-Oct-19
16-Oct-19	6.5	<0.002	0.09	<0.01	<2	<2	<1	0.08	1-Nov-19	4-Nov-19
13-Nov-19	6.8	0.014	0.08	<0.01	<2	<2	<1	0.07	28-Nov-19	4-Dec-19
11-Dec-19	7.0	0.005	0.08	<0.01	<2	<2	<1	0.06	9-Jan-20	14-Jan-20
08-Jan-20	7.1	<0.002	0.14	<0.01	<2	<2	2	0.07	24-Jan-20	17-Feb-20
12-Feb-20	6.5	0.018	0.21	<0.01	<2	<2	19	0.16	27-Feb-20	5-Mar-20
04-Mar-20	7.7	0.014	0.69	0.03	3	2	31	0.13	19-Mar-20	24-Mar-20
01-Apr-20	7.6	0.016	0.30	0.01	<2	<2	<2	0.07	17-Apr-20	20-Apr-20
30-Apr-20	6.7	<0.002	0.18	<0.01	<2	<2	7	0.16	11-May-20	14-May-20
27-May-20	6.7	0.003	0.14	<0.01	<2	<2	<1	0.07	5-Jun-20	11-Jun-20