Challenges of water utilities in the cities Distribution of water - - PowerPoint PPT Presentation

Challenges of water utilities in the cities – Distribution of water in Chandigarh

• B. Purushartha

Commissioner Municipal Corporation Chandigarh commissionermc@gmail.com

• Chandigarh was planned as a new capital of Punjab state.
• In 1966 Punjab state was reorganized and Chandigarh was

kept as a Union Territory.

• The area of Chandigarh UT is 114 sq. km.
• The Municipal Corporation came into existence in 1994.
• The jurisdiction of MCC Chandigarh extends to

▫ The city of Chandigarh ▫ The erstwhile NAC of Manimajra ▫ 9 villages (13 villages still out of MC)

• The Population of Chandigarh as per 2011 census is 10.54

Lacs

BACKGROUND

Sources of W a ter

Period Sources of W a ter

(A) Upto Year 1983

Underground Water (Tubewells) (B) After 1983 to

• 1. Underground Water (248 Tubewells) - 25MGD.

till date.

• 2. Surface Water (Canal Water) - 51 MGD.

From Bha khra Ma in Ca na l Flow ing a t a d ista nce of 27.4 Km from Cha nd iga rh (Ta p p ed Nea r Villa ge Ka ja uli, Punja b),* 24 Hours p um p ing is d one from Ka ja uli w a ter w orks for a hea d of 10 0 m . Total Availability

• 76 MGD
• Average Domestic supply to the residents of the city is 245 lpcd against

National Norm of 135 lpcd

AVAILABILITY OF DRINKING WATER

CANAL SHARING PATTERN

The sharing pattern was decided by M.H.A. in 19 8 3 for each phase of 20 MGD.

• Chandigarh (U.T.)

14.5 MGD

• Mohali (Punjab)

2.5 MGD

• Panchkula (Haryana)

1.5 MGD

• Chandimandir Cantonment

1.5 MGD

• 8 0 MGD raw water being drawn from four

phases and share of UT is 58 MGD.

ZONING PLAN OF WATER SUPPLY DISTRIBUTION

WATER WORKS’ LOCATION PLAN

LEGENDS

Water Works

RISING MAIN TRUNK MAIN DISTRIBUTION LINE

LAYOUT OF WATER SUPPLY LINES IN CHANDIGARH

PIPE NETWORK

FEATURE SIZE PRESSURE RISING MAIN WW Kajauli to WW-39 1200 MM 10 Kg/ cm2 WW-39 to Different WW 400-900 MM 4-6 Kg/ cm2 TRUNK MAIN (SECTOR GRID) 250-400MM 2-2.2Kg/ cm2 DISTRIBUTION LINES (WITHIN SECTOR) 100-200MM 1.3-1.7 Kg/ cm2

* Pressure at ferrule point / Consum er end is m aintained at 0 .7 kg/ cm 2 (Single storey),1.2 Kg/ cm 2 (Double Storey),1.7 Kg/ cm 2 (Triple Storey)

SUPERVISORY CONTROL AND DATA ACQUISITION (SCADA)

• Remote computerized surveillance system of 204

Tubewells / Boosters under M.C Chandigarh.

• Automation of Filtration Plant at Sec-12 and Sec-39

including provision of SCADA, Magnetic Float switch sensors, Actuator S/ V, Turbidity sensor and Residual Chlorine sensor.

• Electromagnet flow meters installed at

▫ Water works ▫ Tubewells

• Centralized control room.
• Easy Availability of reports.

* Ba sed on Actua l billing d a ta collected from Doea cc

INFERENCE FROM THE PERUSAL OF SPATIAL MAPS

 The Average Domestic per capita per day supply to the residents of the city is 245 lpcd against National Norm

• f 135 lpcd.

 Sectors 2 & 3 are drawing more than 1000 lpcd and Sectors 4,5,8 &9 are drawing between 400-1000 lpcd Sector-7,10,11,16,19,21,24,27,28,31-40, 42, 44, 46, 47, 51, 55 & 61 are drawing between 250-400 lpcd.  The Average Domestic per capita consumption pattern during winter and summer season is more or less same.

Proposed Indicator Bench m ark Achieved

Coverage of Water Supply Connections 10 0 % 10 0 % Per capita availability of water at consum er end 135 lpcd 245 lpcd Extent of m etering of water connections 10 0 % 100% Extent of Non revenue water 15% 25-30% Continuity of Water Supply 24 x7 Intermittent Efficiency in redressal of custom er com plaints 8 0 % 98% Adequacy of Treatm ent and Disinfection and Quality of Water Supplied 10 0 % 10 0 % Cost of recovery in water supply services 10 0 % 54 % Efficiency in collection of water supply related charges 90 % 80% No of persons receiving less than 70 lpcd 0 % 0%

ACHIEVED AS PER BENCHMARKS:WATERSUPPLY (MOUD)

INITIATIVE TOWARDS 24X7 WATER SUPPLY

 Providing 24x7 Water Supply Schem e in Vikas Nagar Colony, Mauli Jagran, Chandigarh-Com pleted

LAYOUT PLAN

EXISTING T/ WELLS PROPOSED T/ WELL OHSR

VIKAS NAGAR

UGR

T/ WELL NO1 T/ WELL NO2 T/ WELL NO3 T/ WELL NO4

OHSR DISTRIBUTION

24X7 WATER SUPPLY SCHEME AT VIKAS NAGAR

LESS AVAILABILITY OF CANAL WATER

 Average Daily Outflow from Kajauli is 72 -78 MGD as against 80 MGD

• Reduced Efficiency of Pumps over time period.
• Voltage Drop at 66 KV Sub Station
• Motor/ Pump Minor Breakdown
• Electricity breakdown at Kajauli Water Works
• Phase-III and Phase-IV lines are not optimally

utilized due to weak joints of PSC Lines

DEPENDENCY ON GROUND WATER

 About 30 % water is supplied through Tube wells (31.45 MGD)

–Some colonies/ villages are dependent only

• n this source

–Depletion of Ground Water Table –Approx 10 % Tube wells get Abandoned Every Year –Alternate/ Reliable source required as demand will increase in future.

SHORT COMINGS IN WATER DISTRIBUTION SYSTEM

• No District Meter Areas formed and water

distribution systems emerging from all reservoirs are interconnected and hence, coverage of each reservoir is not clearly defined.

• Hence, consumers residing near reservoirs or in

low-level zones, get more pressure, consume water in excess and end consumers or consumers residing at tail end pockets or in high-level zones do not get water as per needs.

SHORT COMINGS IN WATER DISTRIBUTION SYSTEM

• Intermittent water supply, normally 4-5 hours in

morning and 3-4 hours in evening.

• As water is supplied for limited hours, peak factor

rises as most of the pipelines are empty and lot of water is consumed in filling empty pipelines and reservoirs get emptied within a short time before water reaches to end consumers.

• Due to empty reservoirs, end consumers do not get

desired pressure.

SHORTCOMINGS IN WATER DISTRIBUTION SYSTEM

• Aged Water supply pipes

▫ Phase-1 Pipes are more than 40 years old

• CI Lines prone to leakages due to no of joints
• Theft/ Tempering of Valves, Pressure gauges etc
• Insufficient Pressure monitoring
• Rise in Demand of water due to Conversion policy

SHORTCOMINGS IN WATER DISTRIBUTION SYSTEM

• Flow meter at all production and consumption

points not Available.

• Difficult to measure NRW
• Illegal connections
• Problems of dead meters, average metering.
• Improper Consumer data management.

INADEQUACY IN MAPPING

• Data available in various raw

formats i.e Hard Copy, Autocad, Rough Sketches etc

• Data not available at one platform
• No

policy for data updating / validation

• Reliability of data remains a

concern

OPERATION AND MAINTENANCE COST NOT FULLY RECOVERED

• Tariff is on the lower side and in linear progression

resulting into inverted cross subsidy

• Domestic

 1-15KL 2 Rs/ - Per KL  16-30KL 4 Rs/ - Per KL  31-60KL 6 Rs/ - Per KL  Above 60 KL 8 Rs/ - Per KL

▫ Commercial 15 Rs/ - Per KL

• O & M cost not fully recovered
• Recovery from Defaulters not satisfactory

YEAR EXPENDITURE ON MTC OF WATER SUPPLY (Crore) REVENUE (Crore) GAP (Crore) 2009-2010 90.02 51.65 (-)38.37 2010-2011 92.92 52.15 (-)40.77 2011-2012 107.25 59.27 (-)47.98 2012-2013 114.57 64.96 (-)49.61 2013-2014 126.59 65.38 (-)61.21 2014-2015 125.84 65.45 (-)60.39

DEFICIT IN REVENUE

SMART CITY BENCHMARK REQUIREMENTS

• 24 x 7 supply of water
• 100% household with direct water supply connections
• 135 litres of per capita supply of water
• 100% metering of water connections
• 100% efficiency in collection of water related charges
• Digitized Maps
• Tariff structures that are affordable for the poor and yet enough to

recover cost including Capital Expenditure

WATER SUPPLY

AMENDMENTS APPROVED IN WATER BYELAWS - CATCHING LOW HANGING FRUITS

CHANGE IN POLICY FOR REPLACEMENT OF FAULTY WATER METERS

• Earlier Faulty Water meters (Upto 15 MM) were

replaced by M.C.C

• Amendment

▫ Replacement of faulty water meters by Consumers themselves. ▫ If faulty Water Meters are not replaced within 1 month, penal rate will charged in next billing cycle.

INTRODUCTION OF AMR METERS

• Replacement of conventional water meter with AMR

meters.

• Mandatory for all non domestic consumers and domestic

consumer for residential houses with area two kanal and above.

• by the consumer themselves at their own cost, failing which

penal rate will be charged.

USE OF TERTIARY TREATED WATER

• Use of Tertiary Treated water made compulsory in

all houses/ institutions having area 1 kanal and above within three months otherwise penal rate will be charged

TAPPING OF REPLENISHABLE SHALLOW ACQUIFERS

• All vehicle service stations are required to install

shallow tube wells in their premises at their own cost.

• Within 3 to 9 months time period.
• Failing which penal rate monthly water tariff will

be charged

REDUCTION OF NRW

• All eateries/ dhabas/ booth/ shops located in the

markets, shopping areas which are not earmarked for this purpose, will be provided provisional water and sewerage connection at commercial rate with due intimation to Estate Office U.T. Chandigarh.

• However, providing water and sewerage connection

shall not mean legalizing their change of use.

BETTER METERING

• Allowing people to install separate water meter

connection floor wise if they have separate electricity meter installed in their premises for each floor

AMENDMENTS REQUIRED IN WATER BYELAWS - CATCHING LOW HANGING FRUITS

VOLUMETRIC TARIFF POLICY

• Introducing telescopic tariff structure, based on

volumetric consumption.

▫ The tariff structure should discourage wasteful consumption of water.

• Charging of sewerage cess @10% of water

consumption in a month as against based on number of water closets.

TARRIF TYPE RANGE OF UNITS IN KL/ MONTH PRESENT RATES IN Rs PER KL NEW PROPOSED RATES IN Rs PER KL RATES IN DELHI Rs PER KL DOMESTIC 0 -15 2.0 0 2.0 0 2.9 3 Upto 10 KL 15-30 4 .0 0 4 .0 0 4 .39 Upto 20 KL and 21.9 7 (20 -30 KL) 30 -6 0 6 .0 0 8 .0 0 36 .6 1 6 0 -8 0 8 .0 0 30 .0 0 36 .6 1 Above 8 0 8 .0 0 50 .0 0 36 .6 1 Sewerage cess= 6 0 % of water consum ption LAWN/ IRRIGATION Total Consum ption 8 .0 0 30 .0 0 Twice the rates under Dom estic category INSTITUTIONAL Total Consum ption 12.0 0 30 .0 0 0 -10 KL 14 .6 4 10 -25 KL 29 .28 25-50 KL 73.21 50 -10 0 KL 117.13 >10 0 KL 14 6 .4 1 Sewerage cess= 6 0 % of water consum ption GOVT/ SEMI GOVT OFFICES Total Consum ption 14 .0 0 30 .0 0 SEMI COMMERCIAL/ COMMERCIAL Total Consum ption 15.0 0 30 .0 0 DOMESTIC BEING MISUSED AS COMMERCIAL Total Consum ption 15.0 0 30 .0 0 INDUSTRIAL Total Consum ption 15.0 0 30 .0 0

PROPOSED RATES

PREPARATION OF REHABILITATION PLAN(1-6 MONTHS)

• Creation of Pilot DMA’S (District Metered Area)

▫ Each DMA would have a flow and pressure control at the inlet and each customer connection would be metered. ▫ Dividing the zones into small building blocks, with accurate data of consumption and supplies helps in a more responsive leakage management.

• Ground

verification

• f

data and Pipeline interconnections.

• Updating of Water Supply Network Map.
• Hydraulic analysis for year 2031 and pipes

replacement for year 2021.

PILOT ZONE PROPOSED

• ZONE-III

 POPULATION-90000(Approx)  FED BY WATER WORKS SECTOR 26

 DISTRIBUTES WATER TO SECTOR 19, 26, BAPU DHAM COLONY, 27 TO 30, 20-A ,INDL. AREA PHASE-I.  COVERS VARIOUS TYPES OF WATER DEMAND

• DOMESTIC DEMAND
• LAWN/ IRRIGATION DEMAND
• INSTITUTIONAL DEMAND
• INDUSTRIAL DEMAND
• COMMERCIAL DEMAND

• Rehabilitation & installation of pipes.
• Installation of Isolation Valves and DMA Valve
• Installation of DMA Meter in each Zone.
• Installing equipments such as bulk meters,

replacement of defective domestic meters, service line, valves, pipelines etc.

• Identification of leaking service pipelines.
• Commissioning of Pilot Area and examination of

Isolated DMAs for ensuring prevention of loss of water outside DMAs

IMPLEMENTATION OF REHABILITATION PLAN(10-24 MONTHS)

FULL SCALE 24X7 CONVERSION PROGRAM

• After the success of Pilot DMA’s ,Replication of

program to Entire City.

AUGMENTATION OF EXISTING WATER SUPPLY SCHEME

• ADDITIONAL *29 MGD RAW WATER FROM

AUGMENTATION WATER SUPPLY SCHEME PHASE V AND VI (PUNJAB GOVT)

• CONSENT GIVEN BY BOTH PUNJAB AND

HARYANA GOVT FOR CHANDIGARH SHARE * After Deducting share of Punjab and Haryana as per canal

sharing pattern

WATER SUPPLY SCHEME-PHASE 5 & 6

PHASE-1:- 120 0 MM MS PIPELINE PHASE-2:- 120 0 MM MS PIPELINE PHASE-3:- 120 0 MM PSC PIPELINE PHASE-4:- 120 0 MM PSC PIPELINE WORK IN PROGRESS ON PHASE-5&6:- 220 0 MM MS PIPELINE BY PUNJAB

B Purushartha Commissioner Municipal Corporation Chandigarh commissionermc@gmail.com