Proposals
6.1. INTRODUCTION:
The endeavor for all the proposals is for augmentation of water supply network. This includes,
- Identification of appropriate sources of water
- Efficient water supply coverage through out the city
- Leak detection and preventive maintenance
- Reuse and recycling of water
6.2. BASIN LEVEL PROPOSALS:
The Government of Andhra Pradesh has identified two major sources of water, which are phased over a period of twenty years.
| Proposed Sources | Storage Capacity | Year |
| Krishna water Phase-I | 117 mcm | 2003 |
| Krishna water Phase-II | 117 mcm | 2011 |
| Krishna water Phase-III | 117 mcm | 2021 |
| The Godavari scheme | 296 mcm | 2021 |
| Total | 600 mcm (1202mld/232mgd) |
Table 6.1. Alternative Sources Of Water And Their Storage Capacities
The Krishna Water Supply Project
(135Kms from Hyderabad city)
Project Estimate: RS 2,600 Crores
The Godavari Scheme (85Kms from Hyderabad city)
Project Estimate: RS 1,600 Crores
The reliance on mere augmentation of supply by tapping new and costlier sources cannot be a durable solution, as there is continuance of wastage and inefficient water use, leaving the supply augmentations financially non-viable. Also, additional diversion of water to urban areas is likely to impinge on the water available for non-urban uses, especially irrigation.
Therefore, a separate Division should be formed for conducting area wise campaigns bringing efficiency in water management.
6.3. CITY LEVEL PROPOSALS:
The city level proposals include the complete utilization of available ground water and physical proposals related to treatment plants and reservoirs.
6.3.1. TREATMENT PLANTS:
Present supply of water is 750 Mld where as the combined treatment capacities of all the treatment plants is only 720.2 Mld. But presently the treatment plants are working with an average efficiency of 65%. This is mainly due to the aging of the equipment at treatment plants. Therefore, replacements and repairs of the existing equipment will meet the present shortage for treatment.
Equipments older than 25 years needs replacement or repairs to regain its original capacity.
6.3.2. RESERVOIRS:
PROPOSALS/ MEASURES TO BE TAKEN
- Replacement/ repairing of existing level indicators
- Provision of level indicators where not provided
- Repairing of leaking joints in pipes.
REMEDIES SUGGESTED:
- Grouting followed by waterproofing plastering should be carried out in case of cracks.
- Where damp patches are observed, waterproofing should be applied to the entire surface from inside.
6.3.3. SCADA (Supervisory Control and Data Acquisition):
This technology can be adopted at treatment plants for optimal utilization of energy.
The basic equipments required for this system are,
- One personal computer at the central control point
- One Flow meter at Pump station to record the water flow
- Level switches and pressure indicators
- Electrical equipment & other essential spare parts
- The system gathers & manages data at remote terminal units. The SCADA system's central computer continuously monitors the cost effectiveness by tracking the pumping energy required. Previously, the system's many pumps wasted energy by creating much higher water line pressure than necessary.
- Without SCADA, for example, an operator lacks reservoir status information and may run a pump more than necessary or may turn on a pump an hour earlier than required.
- The systems automatically generate a host of reports and graphics that would otherwise require staff to study records, punch calculators, and produce reports manually.
- The sophistication of SCADA technology is rapidly increasing. At the same time, the cost of the system’s hardware is dropping. The maximum saving will be for electricity bills raised due to the pumping of water at treatment plan.
6.4 DIVISION LEVEL PROPOSAL:
From the analysis it is known that there is unequal distribution of water supply in the divisions.
| Division Wise Distribution of Water in MCH Area |
| Divisions | Water Supply MGD | Tot Population | Pop % | Tot demand | Present lpcd |
| Division I | 11 | 345000 | 8.40 | 10.245 | 145.518 |
| Division II | 17 | 1025000 | 24.96 | 30.438 | 75.695 |
| Division III | 9.81 | 619000 | 15.07 | 18.382 | 72.330 |
| Division IV | 11 | 328000 | 7.99 | 9.740 | 153.060 |
| Division V | 14 | 577000 | 14.05 | 17.134 | 110.738 |
| Division VI | 27 | 643000 | 15.66 | 19.094 | 191.645 |
| Division VII | 10 | 570000 | 13.88 | 16.926 | 80.070 |
| Total | 99.81 | 4107000 | | | 110.916 |
Table 6.2 Division Wise Distribution Of Water Supply
So,the board i.e. HMWSSB should supply water equally (i.e. Supply should be satisfy the lpcd of different areas/divisions densities) to all the divisions.
- Augmentation of water supply from sources to connection
- Bulk water supply through privatization.
- Alternative sources such as grounds water and rain water harvesting.
- Network augmentation – improvement and provision of existing pipe line in stages..
- Increase in ground water re-charge.