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Health Based Targets - Risk Assesement v3

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* LRV - Log Reduction Value
System Name:
System Type:
Choose Surface Water Ground Water	Choose    ?	LRV					Add comment
1. Catchment Protected?
Choose Highly Protected Moderately Protected Minimally Protected Unprotected		LRV					Add comment
2. Raw Water Storage Detention
Raw water storage capacity	ML
Minimum operating level	%
Peak maximum daily flow out	ML
Storage Retention Time:	days	LRV					Add comment
3. Filtration
Choose Type Slow Sand Filtration Conventional Filtration Direct Filtration Micro Filtration Ultra Filtration Ineffective or No Filtration
		LRV					Add comment
4. Ultra Violet (UV) Treatment
Choose Ineffective or No UV Treatment UV Dose (mj/cm2)	mJ/cm2
		LRV					Add comment
5. Chemical Disinfection
Disinfectant	Please Choose Chlorine Chloramine
Disinfectant residual at CWS outlet	Please Choose 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0   mg/L
Minimum water temperature	Please Choose 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25  º C
pH	Please Choose 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5
Clear Water Storage Capacity	ML
Minimum operating level	%
Baffle factor of CWS	Choose 0.1 0.3 0.5 0.7 1.0
Peak outflow rate	L/sec
Outlet water main diameter	mm
Water main length to first customer	m
Pipe Volume	m3     L
Contact Time in Tank	min    hr
Contact Time in Pipe	min    hr
Total Contact Time	min    hr
Total CT	mg.min/L	LRV					Add comment
Overall Log Removal Achieved
	Total Log Removal Required
Further Log Removal Required
							Add comment

 

Risk assessement team members: Add extra fields