Prospect Customer Supply System - Fourth Quarter 2003/2004

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-> Quarterly Water Quality Reports -> Fourth Quarter 2003/2004 -> Water Quality Data

Prospect North
Prospect East
Prospect South
Potts Hill
Ryde

Prospect Customer Supply System

PROSPECT CUSTOMER SUPPLY SYSTEM (1 July 2003 to 30 June 2004)
(delivering to an estimated population of 3,258,975) ***
CHARACTERISTICS			Actual test results for 12 months from1 July 2003 to 30 June 2004 taken from customers tap
CHARACTERISTICS			Units of Measure	Australian Drinking Water Guidelines (ADWG) performance standard (assessment over 12 month period).	No. of samples	Min	Max	Average	% complying	Met 1996 ADW Guidelines*
MICROBIOLOGICAL	Total Coliforms (TC)		Orgs /100mLs	At least 95% results contain no TC's	4836	0	>200	-	98.8
MICROBIOLOGICAL	E. coli****		Orgs /100mLs	At least 98% results contain no EC's	4836	0	2	-	99.9
PHYSICAL/CHEMICAL	Fluoride**		mg/L	At least 95% results 0.9 to 1.5 mg/L	600	0.9	1.2	1.1	100
	Chlorine	Chlorine	mg/L	At least 95% results less than 5 mg/L	4834	0	0.95	0	100
	Chlorine	Mono- chloramine	mg/L	At least 95% results less than 3 mg/L	4833	0	1.65	1.16	100
	Manganese		mg/L	Mean results less than 0.1 mg/L	600	<0.001	0.027	0.001	100
	Turbidity		NTU	Mean results less than 5 NTU	4836	<0.1	6.91	0.13	99.9
	True Colour		HU	Mean results less than 15 HU	120	<2	9	<2	100
	Iron		mg/L	Mean results less than 0.3 mg/L	600	<0.005	1.84	0.016	99.7
	Aluminium		mg/L	Mean results less than 0.2 mg/L	120	<0.010	0.283	0.012	99.2
	Trihalomethanes (THM's)		mg/L	95% results less than 0.25 mg/L	252	0.009	0.113	0.034	100
	pH		pH (pH Units)	Mean results 6.5 - 8.5	4836	7.3	9.5	8.2	97.1
	Zinc		mg/L	Average of test results less than 3 mg/L	120	<0.005	0.025	<0.005	100

* 1996 Australian Drinking Water Guidelines (ADWG).

** Although the ADWG specifies that 95% of fluoride test results should be less than 1.5 mg/L, the Fluoridation of Public Water Supplies Act 1957 requires that, over a year, greater than 95 % of all routine fluoride samples fall within the range 0.90 to 1.50 mg/L.

***Estimated population as at June 30, 2003

**** On the 1/7/2003 the laboratory method for the detection and enumeration of Total coliforms and E. coli was changed from Membrane Filtration to the Colilert method. Where no coliforms or E. Coli are detected, the Colilert method states they are presented as <1 orgs/100mL - for the purposes of this report they have been treated as 0.
# This table includes the test results for key characteristics only. For additional test results please contact Sydney Water.

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Prospect North Customer Supply System

PROSPECT NORTH CUSTOMER SUPPLY SYSTEM (1 July 2003 to 30 June 2004)
(delivering to an estimated population of 629,902) ***
CHARACTERISTICS			Actual test results for 12 months from1 July 2003 to 30 June 2004 taken from customers tap
CHARACTERISTICS			Units of Measure	Australian Drinking Water Guidelines (ADWG) performance standard (assessment over 12 month period).	No. of samples	Min	Max	Average	% complying	Met 1996 ADW Guidelines*
MICROBIOLOGICAL	Total Coliforms (TC)		Orgs /100mLs	At least 95% results contain no TC's	948	0	>200	-	98.3
MICROBIOLOGICAL	E. coli****		Orgs /100mLs	At least 98% results contain no EC's	948	0	2	-	99.9
PHYSICAL/CHEMICAL	Fluoride**		mg/L	At least 95% results 0.9 to 1.5 mg/L	120	1	1.2	1.1	100
	Chlorine	Chlorine	mg/L	At least 95% results less than 5 mg/L	948	0	0.95	0.01	100
	Chlorine	Mono- chloramine	mg/L	At least 95% results less than 3 mg/L	948	0	1.59	1.08	100
	Manganese		mg/L	Mean results less than 0.1 mg/L	120	<0.001	0.027	0.001	100
	Turbidity		NTU	Mean results less than 5 NTU	948	0.07	6.91	0.12	99.9
	True Colour		HU	Mean results less than 15 HU	24	<2	3	<2	100
	Iron		mg/L	Mean results less than 0.3 mg/L	120	<0.005	1.84	0.034	98.3
	Aluminium		mg/L	Mean results less than 0.2 mg/L	24	<0.010	0.017	0.01	100
	Trihalomethanes (THM's)		mg/L	95% results less than 0.25 mg/L	48	0.01	0.113	0.04	100
	pH		pH (pH Units)	Mean results 6.5 - 8.5	948	7.7	9	8.2	96.6
	Zinc		mg/L	Average of test results less than 3 mg/L	24	<0.005	0.025	<0.005	100

The Australian Drinking Water Guidelines 1996 recognise that occasionally throughout the year there may be health or aesthetic related test results above the Guidelines values, and that these results are not necessarily an immediate threat to health. The Guidelines do not require a 100% result in all cases. Disturbances and operational changes can result in occasional localised elevated levels of aesthetic water quality characteristics such as turbidity, pH and iron. Each test result above the guideline value for Total Coliform and/or E. Coli is investigated and actions taken where necessary to minimise the risk of a recurrence.

* 1996 Australian Drinking Water Guidelines (ADWG).

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Prospect East Customer Supply System

PROSPECT EAST CUSTOMER SUPPLY SYSTEM (1 July 2003 to 30 June 2004)
(delivering to an estimated population of 218,615) ***
CHARACTERISTICS			Actual test results for 12 months from1 July 2003 to 30 June 2004 taken from customers tap
CHARACTERISTICS			Units of Measure	Australian Drinking Water Guidelines (ADWG) performance standard (assessment over 12 month period).	No. of samples	Min	Max	Average	% complying	Met 1996 ADW Guidelines*
MICROBIOLOGICAL	Total Coliforms (TC)		Orgs /100mLs	At least 95% results contain no TC's	456	0	83	-	99.6
MICROBIOLOGICAL	E. coli****		Orgs /100mLs	At least 98% results contain no EC's	456	0	0	-	100
PHYSICAL/CHEMICAL	Fluoride**		mg/L	At least 95% results 0.9 to 1.5 mg/L	120	0.9	1.2	1.1	100
	Chlorine	Chlorine	mg/L	At least 95% results less than 5 mg/L	456	0	0.08	0	100
	Chlorine	Mono- chloramine	mg/L	At least 95% results less than 3 mg/L	456	0.2	1.6	1.3	100
	Manganese		mg/L	Mean results less than 0.1 mg/L	120	<0.001	0.025	0.001	100
	Turbidity		NTU	Mean results less than 5 NTU	456	0.07	0.38	0.11	100
	True Colour		HU	Mean results less than 15 HU	24	<2	3	<2	100
	Iron		mg/L	Mean results less than 0.3 mg/L	120	<0.005	0.054	0.011	100
	Aluminium		mg/L	Mean results less than 0.2 mg/L	24	<0.010	0.015	<0.010	100
	Trihalomethanes (THM's)		mg/L	95% results less than 0.25 mg/L	36	0.024	0.057	0.032	100
	pH		pH (pH Units)	Mean results 6.5 - 8.5	456	7.4	8.6	8.2	99.6
	Zinc		mg/L	Average of test results less than 3 mg/L	24	<0.005	0.006	<0.005	100

The Australian Drinking Water Guidelines 1996 recognise that occasionally throughout the year there may be health or aesthetic related test results above the Guidelines values, and that these results are not necessarily an immediate threat to health. The Guidelines do not require a 100% result in all cases. Disturbances and operational changes can result in occasional localised elevated levels of aesthetic water quality characteristics such as pH. Each test result above the guideline value for Total Coliform is investigated and actions taken where necessary to minimise the risk of a recurrence.

* 1996 Australian Drinking Water Guidelines (ADWG).

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Prospect South Customer Supply System

PROSPECT SOUTH CUSTOMER SUPPLY SYSTEM (1 July 2003 to 30 June 2004)
(delivering to an estimated population of 347,030) ***
CHARACTERISTICS			Actual test results for 12 months from1 July 2003 to 30 June 2004 taken from customers tap
CHARACTERISTICS			Units of Measure	Australian Drinking Water Guidelines (ADWG) performance standard (assessment over 12 month period).	No. of samples	Min	Max	Average	% complying	Met 1996 ADW Guidelines*
MICROBIOLOGICAL	Total Coliforms (TC)		Orgs /100mLs	At least 95% results contain no TC's	636	0	31	-	99.2
MICROBIOLOGICAL	E. coli****		Orgs /100mLs	At least 98% results contain no EC's	636	0	0	-	100
PHYSICAL/CHEMICAL	Fluoride**		mg/L	At least 95% results 0.9 to 1.5 mg/L	120	0.9	1.2	1.1	100
	Chlorine	Chlorine	mg/L	At least 95% results less than 5 mg/L	636	0	0.08	0	100
	Chlorine	Mono- chloramine	mg/L	At least 95% results less than 3 mg/L	636	0.16	1.56	1.25	100
	Manganese		mg/L	Mean results less than 0.1 mg/L	120	<0.001	0.013	0.002	100
	Turbidity		NTU	Mean results less than 5 NTU	636	0.07	0.62	0.12	100
	True Colour		HU	Mean results less than 15 HU	24	<2	3	<2	100
	Iron		mg/L	Mean results less than 0.3 mg/L	120	<0.005	0.074	0.011	100
	Aluminium		mg/L	Mean results less than 0.2 mg/L	24	<0.010	0.016	<0.010	100
	Trihalomethanes (THM's)		mg/L	95% results less than 0.25 mg/L	48	0.015	0.056	0.031	100
	pH		pH (pH Units)	Mean results 6.5 - 8.5	636	7.4	9.5	8.3	90.4
	Zinc		mg/L	Average of test results less than 3 mg/L	24	<0.005	<0.005	<0.005	100

The Australian Drinking Water Guidelines 1996 recognise that occasionally throughout the year there may be health or aesthetic related test results above the Guidelines values, and that these results are not necessarily an immediate threat to health. The Guidelines do not require a 100% result in all cases. Disturbances and operational changes can result in occasional localised elevated levels of aesthetic water quality characteristics such as pH. Each test result above the guideline value for Total Coliform is investigated and actions taken where necessary to minimise the risk of a recurrence.

* 1996 Australian Drinking Water Guidelines (ADWG).

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Potts Hill Customer Supply System

POTTS HILL CUSTOMER SUPPLY SYSTEM (1 July 2003 to 30 June 2004)
(delivering to an estimated population of 1,415,558) ***
CHARACTERISTICS			Actual test results for 12 months from1 July 2003 to 30 June 2004 taken from customers tap
CHARACTERISTICS			Units of Measure	Australian Drinking Water Guidelines (ADWG) performance standard (assessment over 12 month period).	No. of samples	Min	Max	Average	% complying	Met 1996 ADW Guidelines*
MICROBIOLOGICAL	Total Coliforms (TC)		Orgs /100mLs	At least 95% results contain no TC's	1788	0	>200	-	99.2
MICROBIOLOGICAL	E. coli****		Orgs /100mLs	At least 98% results contain no EC's	1788	0	0	-	100
PHYSICAL/CHEMICAL	Fluoride**		mg/L	At least 95% results 0.9 to 1.5 mg/L	120	1	1.2	1.1	100
	Chlorine	Chlorine	mg/L	At least 95% results less than 5 mg/L	1788	0	0.1	0	100
	Chlorine	Mono- chloramine	mg/L	At least 95% results less than 3 mg/L	1788	0.2	1.6	1.17	100
	Manganese		mg/L	Mean results less than 0.1 mg/L	120	<0.001	0.004	0.001	100
	Turbidity		NTU	Mean results less than 5 NTU	1788	<0.1	4.18	0.13	100
	True Colour		HU	Mean results less than 15 HU	24	<2	9	<2	100
	Iron		mg/L	Mean results less than 0.3 mg/L	120	<0.005	0.293	0.013	100
	Aluminium		mg/L	Mean results less than 0.2 mg/L	24	<0.010	0.283	0.021	95.8
	Trihalomethanes (THM's)		mg/L	95% results less than 0.25 mg/L	72	0.009	0.063	0.034	100
	pH		pH (pH Units)	Mean results 6.5 - 8.5	1788	7.4	9.1	8.1	98.9
	Zinc		mg/L	Average of test results less than 3 mg/L	24	<0.005	0.009	<0.005	100

The Australian Drinking Water Guidelines 1996 recognise that occasionally throughout the year there may be health or aesthetic related test results above the Guidelines values, and that these results are not necessarily an immediate threat to health. The Guidelines do not require a 100% result in all cases. Disturbances and operational changes can result in occasional localised elevated levels of aesthetic water quality characteristics such as pH and aluminium. Each test result above the guideline value for Total Coliform is investigated and actions taken where necessary to minimise the risk of a recurrence.

* 1996 Australian Drinking Water Guidelines (ADWG).

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Ryde Customer Supply System

RYDE CUSTOMER SUPPLY SYSTEM (1 July 2003 to 30 June 2004)
(delivering to an estimated population of 647,870) ***
CHARACTERISTICS			Actual test results for 12 months from1 July 2003 to 30 June 2004 taken from customers tap
CHARACTERISTICS			Units of Measure	Australian Drinking Water Guidelines (ADWG) performance standard (assessment over 12 month period).	No. of samples	Min	Max	Average	% complying	Met 1996 ADW Guidelines*
MICROBIOLOGICAL	Total Coliforms (TC)		Orgs /100mLs	At least 95% results contain no TC's	1008	0	>200	-	98
MICROBIOLOGICAL	E. coli****		Orgs /100mLs	At least 98% results contain no EC's	1008	0	0	-	100
PHYSICAL/CHEMICAL	Fluoride**		mg/L	At least 95% results 0.9 to 1.5 mg/L	120	1	1.2	1.1	100
	Chlorine	Chlorine	mg/L	At least 95% results less than 5 mg/L	1008	0	0.38	0	100
	Chlorine	Mono- chloramine	mg/L	At least 95% results less than 3 mg/L	1008	0	1.65	1.08	100
	Manganese		mg/L	Mean results less than 0.1 mg/L	120	<0.001	0.005	0.001	100
	Turbidity		NTU	Mean results less than 5 NTU	1008	0.07	2.43	0.12	100
	True Colour		HU	Mean results less than 15 HU	24	<2	3	<2	100
	Iron		mg/L	Mean results less than 0.3 mg/L	120	<0.005	0.07	0.012	100
	Aluminium		mg/L	Mean results less than 0.2 mg/L	24	<0.010	0.021	0.012	100
	Trihalomethanes (THM's)		mg/L	95% results less than 0.25 mg/L	48	0.017	0.067	0.032	100
	pH		pH (pH Units)	Mean results 6.5 - 8.5	1008	7.3	9.2	8.2	97.7
	Zinc		mg/L	Average of test results less than 3 mg/L	24	<0.005	0.006	<0.005	100

The Australian Drinking Water Guidelines 1996 recognise that occasionally throughout the year there may be health or aesthetic related test results above the Guidelines values, and that these results are not necessarily an immediate threat to health. The Guidelines do not require a 100% result in all cases. Disturbances and operational changes can result in occasional localised elevated levels of aesthetic water quality characteristics such as pH. Each test result above the guideline value for Total Coliform is investigated and actions taken where necessary to minimise the risk of a recurrence.

* 1996 Australian Drinking Water Guidelines (ADWG).

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