Based on Term of References for the Project Preparation of Raw Water Supply System

Readiness for RWS Intake and Transmission from Lau Simeme Reservoir in North
Sumatra Province, Jatigede Stage I+II System and Kertasari System in West Java
Province that have been already learned, there are several suggestion to be considered in
order to achieve great and functional result.
1. Planning and design activity in Project Preparation of Raw Water Supply System
Readiness for RWS Intake and Transmission from Lau Simeme Reservoir in North
Sumatra Province, Jatigede Stage I+II System and Kertasari System in West Java
Province have to referring on valid regulations and standard criteria in Indonesia, some
of them are:
a. UUD 1945
b. UU No. 11 tahun 1974 about water resources.
c. Public Works and Public Housing Ministerial Regulation No. 09/PRT/M/2015 about
usage of Water Resources
d. Indonesia Government Regulation No. 16 Tahun 2005 about Developiment of Water
Supply System
e. Public Works and Public Housing Ministerial Regulation No 04 tahun 2009 about
Quality Assurance System (QMS).
f. Indonesian National Draft no. Pd T -05-2005 C about guidelines of community-
based Drinking Water Supply
g. Indonesian National Draft no. Pd T -09-2005 C about infrastructure and facilities
development for community-based drinking water provision.
h. Indonesian National Draft no. Pd T -10-2005 C about implementation, monitoring,
and evaluation of Community-based drinking water supply
i. Simple guidelines for water supply and sanitation development in rural areas, Dep.
Kimpraswil, tahun 2002
2. Module 1 : Delineate and characterize water sources
To delineate and characterized water sources, topographic survey matters to define
watershed. In one location of this project, several potential watershed must be analyzed
to get the most suitable for fulfill water need.
Each watershed determinate its surface water setbacks and buffer zones. It used to
indicate the impact of runoff on drinking water sources, so it can be reduced. In addition,
drinking water utilities may delineate stream reaches to facilitate spill-and other
emergency responses activities for protection of sources water.
3. Module 2 : Conduct contaminant source inventory
To conducting contaminant of water sources, analysis are needs focus on:
- Sources designed to discharge substances
- Sources designated to store, treat, and disperse of substances discharge through
unplanned release
- Sources designed to retain substances as a consequences of other planned
activities
- Sources discharging substances as a consequence of other planned activities
- Sources providing conduit or inducing discharge through altered flow patterns
- Naturally occurring sources whose discharge is created and/ or exacerbated by
human activity.
It needed to prioritizing risk of contaminant water sources and planning an effort to
minimize it.
4. Module 3 : Assess water supply components
Water supply component need to assessed for identifying it condition, suitability,
adequacy, security and any other observations. These two types of water systems that
supply water under pressure for consumer consumption and fire protection are
- Gravity feed systems
- Pumping pressure systems:
Each of these systems must take water from a supply source, pass the water
through a treatment plant, and then transport the water into the distribution system. It
needs to be recognized that community water systems can be divided into four basic
classification according to the water source:
a. High or low reservoirs that hold non-potable water for gravity feed.
b. Pumping station systems that use ground water from streams, rivers, canals,
man-made or natural lakes, and other special provisions for impound water. In
these types of systems, the raw water is pumped from the source point to the
treatment plant and then either pumped directly into the distribution system or
into storage to be used on demand by the community.
c. Pumps at well sites that pump water to the treatment facility. Based on the
difference in elevation between the treatment facility and the community to be
served, the water may flow by gravity through the distribution systems, or there
may be the need for another pumping station.
 d. A combination of gravity flow and one or more pumping stations to transport the
water from the source point to all of the water demand points on the distribution
system.
In this project, assessing water supply component are needed to assesses existing pipe
system. If existing pipe system is in good condition it can used and optimized. Several
method that will be used for assessing existing water supply component are:
- Onsite survey
- Checking leakage in joint
- Checking the flow inlet and outlet
- Checking water quality in outlet
5. Module 4: Evaluate water system management, operation and maintenance practices
Evaluating water system management, operation and maintenance practices are needed
for keep the pipe distribution system in good condition during service life and useful for
the community. Assessment component that used to evaluate water system
management, operation, and maintenance practices are:
- Evaluate water supply system management standards and practices
- Evaluate water supply system operation and maintenance procedures and practices
• Compare current practices with the requirements set out in the operating permit
• Review the adequacy of operation and maintenance standards, procedures and
practices
• Evaluate the backflow prevention/cross-connection control program
- Evaluate documentation and reporting practices
- Evaluate emergency response and contingency planning practices
It will reported as a document below:
- assessment report
- hazard identification table
6. Module 5: Audit water quality and quantity
Auditing water quality and quantity are needed for keep the pipe distribution system
useful for public. Assessment component that used to audit water quality and quantity
are:
- Analyze raw and finished water quality trends
• Conduct a trend analysis of water quality data
• Review historical water quality results to identify exceedances in the guidelines
for Indonesian drinking water quality
 - Determine if current treatment type and practices are effective
- Ascertain if the water supply is sufficient to meet present and future water demands
- Evaluate the adequacy of the current monitoring and reporting program
- Evaluate customer vulnerability and satisfaction
7. Module 6: Review financial capacity and governance of the water service agency
Assessment component that used to reviewing financial capacity and governance of the
water service agency are:
- Evaluate the governance and accountability structures for the water service agency
- Assess the management and financial capacity of the water service agency
- Determine if community growth and development pose a significant risk to the
provision of drinking water
- Describe how the governance structure, organizational capacity, development
pressures and funding influence the physical production of safe drinking water
8. Module 7: Characterize Risks from Source to Tap
Assessment component that used to characterize risks from source to tap are:
- Evaluate the robustness of drinking water protection barriers
- Assess risk for hazards/vulnerabilities identified in modules 1 to 6
• likelihood
• consequence
• regulatory requirements
• risk characterization table
- Evaluate the water supply system as an integrated whole
• strengths, weaknesses, opportunities and threats (SWOT) analysis
• statement of water supply system performance
9. Module 8: Recommend actions to improve drinking water protection
Assessment component that used to recommend actions to improve drinking water
protection are:
- Recommend risk management actions
- Prioritize risk management actions