QUALITY CONTROL SET-UP OF DELHI JAL BOARD
DIRECTOR
(Treatment & Quality Control)
CHIEF WATER ANALYST
ASSTT CHIEF WATER ANALYST
CHEMIST/ BACTERIOLOGIST
ASSTT CHEMIST/ ASSTT BACTERIOLOGIST
LABORATORY TECHNICIAN
LABORATORY ASSISTANT
LABORATORY ATTENDANT
The above chart is the current set-up of Quality Control Wing of the
Delhi Jal Board for monitoring the quality of water and Waste water round
the lock at Water Treatment Plants, Sewage Treatment Plants and in
Distribution system by 16 nos. of laboratories in Water side and 06 nos. in
Sewage side.
1.
Back Ground
Delhi Jal Board has two types of sources of water supply for Capital
city of Delhi viz;
(I) Surface Water
(a) River Yamuna
(b) Western Yamuna Canal
- A distributory of River Yamuna
(c) Upper Ganga Canal
- A distributory of River Ganga
(d) Bhakra Storage
- Through Western Yamuna Canal
(II) Ground Water
(a) Tube Wells
(b) Ranney Wells
Delhi Jal Board draws raw water from river Yamuna by harnessing it at
Wazirabad Barrage. Delhi also draws raw water at Bawana and Haiderpur
from Western Jamuna Canal – a distributory of River Yamuna and also from
Upper Ganga Canal –A distributory of River Ganga. At present, on an
average about 800 MGD of potable water is being produced by optimizing
production from various sources like River Yamuna, Bhakra Storage, Upper
Ganga Canal and Ground. The extent of Surface water treated at various
Water Treatment Plants is 90% and the remaining 10% supply is from Ground
water like Ranney Wells and Tube Wells.
2. Water Quality Assurance
Delhi Jal Board has set-up number of laboratories with adequate
facilities manned by qualified personnel for inspection and evaluating the
suitability of water supplies for public use as well as controlling the water
distribution system. Accordingly, Delhi Jal Board has 9 (nine) water testing
laboratories at Treatment Plants which examine and evaluate suitability of
water to be supplied to public and also control the Water Treatment
process round the Clock. The work of Quality Control (Laboratory) starts right
from examining raw water characteristics. This helps to determine the extent
of treatment needed and finally examination of Final water to ascertain
that it conforms to the prescribed Standards as per BIS norms.
In furtherance of monitoring the quality of raw water received at
Haiderpur, Nangloi and Bawana Treatment Plants, a field laboratory has
been set-up upstream of Western Jamuna Canal on the Bawana-Narela
Road. It helps to assess the raw water quality in advance by 6 to 8 hours
before the water reaches Treatment Plants.
3. Surveillance of Drinking water quality
For Surveillance of drinking water quality in distribution net work, 06
(six) modern Zonal laboratories have been set-up in NCT of Delhi. The Zonal
laboratories are detailed as under along with command areas :S.no. Name of laboratory
Command areas
Contact nos.
1.
Central laboratory,
Water Works Wazirabad
North and Central Delhi
and Rural North
2381 4322
2.
Zonal laboratory
Water Works Okhla
South Delhi
2691 0524
Zonal laboratory
Water Works Bhagirathi
Trans Yamuna Area
2256 1930
3.
4.
Zonal laboratory
Water Works Haiderpur
West Delhi and Rural North
& West
2755 2447
2755 2446
5.
Zonal laboratory
Greater Kailash
(Rural Water Supply)
Rural South &
South West Delhi
2622 4928
Zonal laboratory
Najafgarh zone &
Nangloi area
2594 4803
6.
Nangloi
Zonal laboratories also check the quality of water from Ranney Wells
and Tube Wells in regard to Bacteriological and Chemical aspects in all
parts of Delhi. Each Zonal laboratory is preparing daily reports, which are
compiled and sent to various Public Health departments. These laboratories
have been equipped with suitable sampling Van etc.
Zonal water testing laboratories at Wazirabad, Haiderpur, Bhagirathi,
Okhla are testing chemical parameters and microbiological parameters in
raw waters reaching the Treatment Plants and also final treated water
leaving the treatment Plants on daily basis.
As such, the water being supplied by the Delhi Jal Board from all
available sources, is tested regularly right from the raw water stage up to
the consumer end for ensuring potability as per BIS drinking water
specifications 10500-1993. On an average, every day, about 300 water
samples are lifted from the distribution system including individual taps and
Public Stand Posts.
Apart from this, Delhi Jal Board is also getting tested the drinking
water being supplied to Delhiites from outside reputed agencies like,
National Environmental Engineering Research Institute (NEERI) for ensuring its
potability fortnightly for Eleven Physico-Chemical parameters and Two
Microbiological parameters. Eight toxic metals, Six pesticides residue and
Five Tri-Halo Methane formations are also being got tested on quarterly
basis from NEERI. In these fortnightly and quarterly tests, the level of all the
parameters have been found to be below the desirable limits as per Bureau
of Indian Standards, rather the contents have been much below the new
specifications laid down by BIS for packaged drinking water.
The list of these parameters is annexed at Annexure-I.
Agencies like, National Institute of Communicable Diseases (NICD)
and Health Department of Municipal Corporation of Delhi (MCD) are also
testing independently the drinking water being supplied by the Delhi Jal
Board to ascertain its potability.
---------x-------x--------
Annexure-I
Surveillance of treated quality from Treatment Plant and Ground water in
Delhi carried out by Out-side Agency, NEERI
A.
Physio-Chemical Parameters tested on Fortnightly basis
S.NO.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
CHARECTERISTICS
Turbidity
Ph Value
Specific Conductance
Total Dissolved Solids
Total Alkalinity
Total Hardness
Chloride
Sulphate
Residual Chlorine
Total Coliform Count
Faecal Count
UNITS
IS-10500-1993
NTU
5.0-10.0
6.5-8.5
--500-1000
200-600
300-600
250-1000
200-400
0.20-0.50
Absent
Absent
µm/cm
mg/l
,,
,,
,,
,,
,,
MPN/100 ml.
,,
B. Parameters tested on quarterly basis
S.NO.
1.
a.
b.
c.
d.
e.
f.
g.
h.
2.
3.
4.
a.
b.
c.
d.
e.
5.
a.
b.
c.
d.
e.
PARAMETERS
Heavy Metals
Cadmium
Chromium
Copper
Iron
Lead
Manganese
Zinc
Nickel
Nitrate
Fluoride
Pesticides
DDT (2 derivatives)
V-HCH
Aldrine
Di-Aldrine
Endo-Sulphan
Tri-Halo Methanes
(Instantaneous & Formation Potential)
Chloroform
Bromoform
Chloro-Dibromo Methane
Bromo-Dichloro Methane
Total
UNITS
AS PER IS:10500-1993
mg/l
,,
,,
,,
,,
,,
,,
,,
,,
,,
µg/l
,,
,,
,,
,,
,,
,,
0.01
0.05
0.05-1.5
0.30-1.0
0.05
0.10-0.30
5-15
0.02
45
1.0-1.5
0.001
------
,,
,,
,,
,,
,,
200
60
100
100
---
SEWAGE TREATMENT PLANTS (STPS) OF DELHI JAL BOARD
1. There are 17 (Seventeen ) Sewage Treatment Plants of Delhi Jal Board in Delhi
as per the details given below :
S.No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
2.
Name of Plant
Okhla
Kondli
Yamuna Vihar
Coronation Pillar
Oxidation Ponds
Rithala
Rohini
Nilothi
Najafgarh
Narela
Papankala
Keshopur
Vasanat Kunj
Mehrauli
Delhi Gate
Sen Nursing Home
Ghitroni
Total
Capacity in MGD
140
45
20
40
06
80
15
40
05
10
20
72
5
5
2.2
2.2.
5
512.4 MGD
The following DPCC norms are followed :-
S.No.
1
2
3
4
5
6
7
8
Particulars
pH
TSS
COD
BOD
Oil & Grease
Ammonia
Phosphate
Nitrate Nitrogen
Parameters
5.5-9.0
50 mg/l
250 mg/I
30 mg/I
10 mg/1
50 mg/I
5 mg/I
10 mg/I
3. Feeding Sewage Pumping Station(SPS) for sewage Treatment Plants :-
S.No.
1.
SEWAGE
TREATMENT
PLANTS (STPs)
Okhla
2.
Vasant Kunj
3.
4.
Mehrauli
Keshopur
5.
6.
7.
Nilothi
Papankala
Kondli
8.
Yamuna Vihar
9.
Rithala
10.
Coronation Pillar
11.
12.
13.
14.
Rohini
Najafgarh
Narela
Timar Pur
Oxidation Ponds
FEEDING SEWAGE PUMPING STATIONS
S.P.S. Kilokari, Ring Road, Andrewsganj, Pragati
Vihar, Sarita Vihar, Tuglakabad, Batla House,
DDA (Badar PUr), Jasola, Sukhdeo Vihar,
Sriniwaspuri, Pul Prahaldadpur.
S.P.S. Vasant Kunj Sec-c 9, Vasant Kunj Sec-B,
Pocket 5 &6 (Kishan Garh etc. By gravity)
By gravity (Mehrauli area)
Trunksewer – West Patel Nagar, Jail Road Sewer,
Punjabi Bagh, Rajouri Garden, Uttam Nagar (By
gravity)
S.P.S. Saied Nangloi
S.P.S. Dwarka Sec-7
S.P.S. Preet Vihar,Jagreeti, Kalyanpura, Kondli,
Gharoli, Dallupura
I- S.P.S. Zafrabad, Yamuna Vihar
II – S.P.S. Brahmpuri, Ghonda I & II, Loni Road
S.P.S. Bharat Nagar, Shalimar Bagh, Pitampura,
Rithala, Haiderpuri, Avantika, Rohini Sector-17,
Rohini Sector 19
S.P.S. University, Model Town, Jahangirpuri,
Adarsh Nagar, Narela, SGT Nagar, RU Nagar,
Bharola
S.P.S. Rohini Sec. -23
S.P. S. Najafgarh
S.P.S. Narela
S.P.S. Nehru Vihar
Command Area of Chief Water Analyst for Quality Control
S.No. Name of Surveillance
and QC Zones
1
South-I
Assembly
Constituency
Mehrauli
Chatterpur
Ambedkar Nagar
Lab.
Assigned
RWS
CWA
CWA (C)
2
South -II
Kalkaji
Jungpura
Kasturba Nagar
Okhla
CWA (C)
3
South -III
Deoli
Sangam Vihar
GK
Okhla
CWA (C)
4
South -IV
Tughalkabad
Badarpur
Okhla
Okhla
CWA (C)
5
South West-I
Palam
Matila
Dwaraka
Haiderpur
CWA (N)
6
South West-II
Najafgarh
Bijwasan
Nangloi
CWA (N)
7
South West-III
R.K. Puram
Malviya Nagar
Okhla
CWA (C)
8
West-I
Hari Nagar
Tilak Nagar
Vikas Puri
Rajouri Garden
Haiderpur
CWA (N)
9
West-II
Madipur
Patel Nagar
Moti Nagar
Rajinder Nagar
Wazirabad
CWA (N)
10
West-III
Nangloi
Uttam Nagar
Janakpuri
Mundka
Nangloi
CWA (N)
11
North West-I
Sultanpur Mazara
Mangolpuri
Kirari
Haiderpur
CWA (N)
12
North West-II
Rithala
Rohini
Narela
Bawana
Haiderpur
CWA (N)
13
North West-III
Shakur Basti
Wazirpur
Shalimar Bagh
Haiderpur
CWA (N)
Tri Nagar
Wazirabad
CWA (C)
14
Central-I
Matia Mahal
Ballimaran
Chandni Chowk
Wazirabad
CWA (C)
15
Central-II
Sadar Bazar
Karol Bagh
Wazirabad
CWA (C)
16
North
Burari
Timarpur
Wazirabad
CWA (C)
17
North West-IV
Model Town
Adrash Nagar
Badli
Wazirabad
CWA (C)
18
East-I
Kondli
Trilok Puri
Patpar Ganj
Laxmi Nagar
Bhagirathi
CWA (C)
19
East-II
Shahdara
Vishwas Nagar
Krishna Nagar
Bhagirathi
CWA (C)
20
North East-I
Gokul Pur
Seemapuri
Rohtash Nagar
Bhagirathi
CWA (C)
21
North East-II
Ghonda
Mustafabad
Karawal Nagar
Bhagirathi
CWA(C)
22
North East-III
Gandhi Nagar
Seelampur
Babarpur
Bhagirathi
CWA(C)