wsp nepal
TRANSCRIPT
Sudan Raj Panthi (PhD) Department of Water Supply and Sewerage
Kathmandu, Nepal
¡ Area 147,000 Sq Km ¡ Population 26.6 million ¡ Drinking water coverage 80 % ¡ Sanitation Coverage
Ø Based on having toilet or ODF (Open defecation Free) -‐ 50 % Ø ODF-‐ districts 2 out of 75 Ø ODF –VDCs 235 out of 4000
¡ Total Water Supply Schemes = 37,000 ¡ Only 200 projects have population >5000 ¡ Only 150 projects have treatment facilities ¡ 80 % project sources are spring ¡ National drinking water standard (2005) § 2
Parameter Unit Max Limit /Limit
Turbidity NTU 5 (10)*
TDS Mg/L 1000
Iron Mg/L 0.3 (3.0)*
Manganese Mg/L 0.2
Arsenic Mg/L 0.05
Chromium Mg/L 0.05
Flu0ride Mg/L 0.5 – 1.5
Lead Mg/L 0.01
Ammonia Mg/L 1.5
Nitrate Mg/L 50
Total Hardness Mg/L as CaCO3 500
Residual Chlorine Mg/L 0.1 - 0.2
Total Coliform MPN/100 mL 0 (in 95 % tests)
E. Coli MPN/100 mL 0 ( )* If there is no alternate source
National Drinking Water Quality Standards, 2005
§ 3
¡ The water suppliers should submit a water quality improvement programs(WQIP) to the concerned ministry and MoPH
¡ It is mandatory upon service providers to implement those programs, from second year of approval of such programs by the concerned ministries
¡ WQIP è WSP § 4
¡ A management tool to achieve health based target of water supply schemes
¡ An effective means of consistently ensuring the safety of drinking water
¡ A series of works on risk assessment followed by risk management, from catchment to consumer
¡ A variety of interventions at the level of households, community, water supplier and regulator, often with an excellent cost-benefit ratio
¡ A correction of sanitary negligence
§ 5
§ 6
Guideline
Hand book
§ 7
¡ 5-‐7 members with one team leader
¡ Define roles and responsibility
¡ Orient the team for WSP
Team Formation 1
§ 80
Team Formation System
Assessment
2
¡ Understand the Project Components
¡ Prepare Social Map
¡ Prepare Flow Chart § 11
§ 12
Team Formation System
Assessment
Hazard Identification and Risk Analysis
3
§ 13
Team Formation System
Assessment
Hazard Identification and Risk Analysis
Control Measures
4
§ 14
Hazard point or process Risk score (1 to 4)
Control measures
Source and Catchments Ø Flood entering to the intake 4 Diversion channel
Reservoirs Ø No fencing Ø Damaged Manhole cover
3 4
Do fencing Repair / Replace it
Pipe lines Ø Leak near School 4 Repair
Tap stands and users area Ø Damaged platform 2 Repair
§ 15
Team Formation System
Assessment
Hazard Identification and Risk Analysis
Support & Correction
Control Measures
5
¡ Urgent Correction with Priority
¡ Long Term Correction
¡ Supporting Program § 16
Team Formation System
Assessment
Hazard Identification and Risk Analysis
Urgent Correction
Control Measures
Monitoring Plan
6 § 17
What to monitor? Who monitors? When to monitor (frequency)?
Source
a) Identification of places from where flood may enter b) Identification of entry point of pollution
1. Govinda BK ( staff) 2. Kamal Narayan 3. Krishna Kattel
Once in two months
Water Treatment Plant
Open wash out valve to flush the treatment units
1.Raghupati KC ( staff) 2. Krishna B. Devkota 3. Balaram Shrestha
Twice in a month
§ 18
Team Formation System
Assessment
Hazard Identification and Risk Analysis
Urgent Correction Validation
Control Measures
Monitoring Plan
7
§ 19
Team Formation System
Assessment
Hazard Identification and Risk Analysis
Urgent Correction Validation
Control Measures Verification
Monitoring Plan
8
§ 20
Confirming that a product or service meets the needs of its users
21
TSS = 500
Tu=2000
CF=352
TSS = 100
Tu=1400
CF=320
TSS = 20
Tu=50
CF=52 TSS = 0 Tu=<1
CF=0
FRC (Cl2 )= 0.1 mg/l
Cl2 = 1mg/l FRC (Cl2 )= 0.2 mg/l
Validation of Treatment Units (case study)
T#200
T# 300 T# 500
T#300
RF SSF
GC/PST
RVT
TSS in mg/L
Tu in NTU
CF in CFU per 100 mL
Team Formation System
Assessment
Hazard Identification and Risk Analysis
Urgent Correction
User’s Satisfaction
Validation
Control Measures Verification
Monitoring Plan
9
23
Team Formation System
Assessment
Hazard Identification and Risk Analysis
Urgent Correction
User’s satisfaction
Validation
Documentation
Control Measures Verification
Monitoring Plan
10
?
24
¡ Resource management § Budget ▪ Foreign Supports (WHO, UN-‐Habitat, UNICEF etc.) ▪ National (DWSS, DOLIDAR etc.) ▪ Local (Project’s)
§ Equipments (Microbial Test-‐kit)
§ Manpower (WSP Training for 200 Engineers)
¡ Advocacy (National Workshop, Awareness Program)
§ 246
¡ Type of projects taken for WSP § Hand Pump/Shallow Tube Wells § Rural Water Supply Projects § Urban / Semi-urban Water Supply Projects
¡ Organizations started to work on WSP § DWSS/ WHO/ UN Habitat § NEWAH / Water Aid § ENPHO § Centre for Integrated Urban Development (CIUD) § Municipal Association of Nepal (MuAN) § Rural Water Supply and Sanitation Project, WN &
RVWRMP § 27
From 2006 to 2009 ¡ Shallow Tube Well – 1 Cluster ¡ Pilot projects in 12 rural setting ¡ Pilot projects in 5 urban setting
In 2010/2011 ¡ 22 Projects in rural setting ¡ 20 Projects in Urban Settings ¡ 150 Projects (@ 2 # per district)
For 2011/12 § 150 Projects (@ 2 # per district) § 10 Projects in Urban settings § WHO/AusAid Project III Phase
§ 28
§ 29
§ 30
§ 31
Critical Points § 32
Critical Points
§ 33
Control of Leakage (Itahari)
34
BEFORE WSP
AFTER WSP
§ 33
BEFORE-‐ WSP AFTER-‐ WSP
36
Name of the project
District E-‐coli per 100 mL Sample point
Before WSP
After WSP
Sanopatiyani Chitawan 150 0 RVT
100 0 Tap
Jante Morang 150 26 Tap
120 2 Source
Gahate Bhyagute
Nuwakot 90 0 RVT
95 0 Tap
Motipur Kapilbastu 65 0 Deep Well
95 5 Tap
Deurali Kaski 300 0 RVT
60 0 Pipeline 37
¡ If source is good, that doesn’t mean the scheme doesn’t need WSP
¡ Different approaches to undertake the WSP
¡ WSP approach doesn’t expect big amount of money but can save money
¡ WSP team must have adequate experience and expertise
¡ Lessons should learnt from case studies
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