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To Improve Water Quality - How to? Test Results Attached! Kumbakonam, Tamilnadu

Hi,


I Live in Aduthurai, near Kumbakonam, Tamil Nadu.

We have dug a 140 feet borewell and tested the water and following are the
results.

Colour - Slightly Yellowish
Odour  - Objectionable

                                      Column A    Column B         Our Borewell reading
                                      ========  ========      ==============

Turbidity                            1                     10                140
Iron as Fe (mg/l)                0.1                  1                  2.67


Total Dissolved Solids          500                 2000             595
pH                                     7.0to8.5          6.5to9.2         7.1
Alkalinity Total as
CaCO3                               200                 600               360
Total Hardness as CaCO3     200                 600               290
Magnesium as Mg                30                  150                36

The Filter report says that
 
(CPHEEO Standard)

Column A - Desirable Limits
Column B - Permissible Limit in the absence of better alternative source


We have contacted a filter manufacturer. He is willing to install an "Iron Removal Filter" which he says
will remove Colour, Odour, Turbidity and Iron problems.

But for the other chemicals, his "Iron Removal Filter" will not reduce those chemicals. But the technician
says that since they are below "B"-Cause for Rejection, we need not worry.

My Questions:

(1)The filter manufacturer says column A and B are like minimum and maximum. Is he right?

(2)If his "Iron Removal Filter" removes iron, turbidity, colour and odour, will the water be potable with the
other chemicals as above?

Thanks
R Balaji




Tags:

Comments

1. Dear Mr. Balaji, Once you are

Dear Mr. Balaji,


Once you are able to reduce the Iron (thereby odour and colour) you have good potable water. As a matter fact the calcium content is good (and not very high either). This is good for building of bones. However if you are not able to reduce odour you may also use an activated Carbon filter.


I am not an advocate for blind use of reverse osmosis as long as the TDS is below 250 - 300 mg/l, which would reduce Calcium and other necessary minerals. To remove bacterial contamination, if any, it is best to use an Ultra Violet dosing system and maybe with Ultra Filtration.


Keshav Agarwal
Technical Consultant
CTO - Biotech Services
Noida, UP

2. Dear Mr. Balaji, Yes, as the

Dear Mr. Balaji,


Yes, as the filter manufacturer says, A and B can be taken as sort of minimum and maximum. Apart from higher values of iron, other parameters are closer to a so no need to worry if iron is removed effectively.


Suneel Pandey, PhD
Fellow, Centre for Environmental Studies
The Energy and Resources Institute (TERI)
India Habitat Centre, Lodhi Road
New Delhi 110 003

3. Dear Mr. Balaji, 1. By and

Dear Mr. Balaji,


1. By and large the various constituents/parameters of your bore well water are within the “Desirable/acceptable " limits for most of them.
2. The water has a colour mostly due to the prescence of iron which is almost 3 times the permissible limit.
3. The mystery is the “objectionable" odour in the water. If you are able to describe what kind of odour, I might be able to suggest some treatment.One method is to pump out the water from the well into an open tank which can hold approximately 500 lits by allowing the water to gush like a fountain and collect in the tank. This could help remove much of the odour and part of the iron too. This method is called “aeration".
4. This aerated water should then be pumped through an iron removal filter and after that through an Activate Carbon filter to remove any remaining traces of colour and odour.


You should be careful about what you buy as there is no SINGLE filter that will remove, iron, colour and odour.
If you need more advice you are welcome to contact me.


Regards


S.S.Ranganathan
Water Management Consultant
Ion Exchange
Bangalore

4. Dear Mr. Balaji, 1. To an

Dear Mr. Balaji,


1. To an extent he is right. However, the reports are values for standard and in absence of alternate sources respectively. Since you are in a municipal corp. limit, you have to consider the column A standard.


2. The water shall be potable after removal of turbidity, iron, color and odour. However, test it for E.coli and Faecael coliform (Bacteriological test) and also, use a R.O for drinking water. You may use a wall mounted unit for the same. Water Softener for washing of clothes is also desirable as water is igh in hardness and alkalinity.


Regards,
Taral Kumar
Executive Director
Akar Impex Pvt. Ltd.
Noida, Uttar Pradesh

5. Comments on water quality at near Kumbakonam, Tamil Nadu.

dear sri r balaji

 firstly your water test is incomplete - in order to be sure that water is drinkable you need a complete test as per BIS 10500.

there are several parameters like fluride, arsenic, nitrogenous compounds, BOD, MPN etc. are also needed and based on test report you need to choose a filter/treatment to make it potable. 

colour, high turbidity and odour (in addition to high TDS) may indicate presence of other pollutants in water - i must appreciate your scientific approach to the issue - most people are go by hear say - water quality concerns are very serious and it is likely to be more acute with time to come.

wish you good luck.

prof. subir paul

new delhi

6. Dear Mr. Balaji, 1. To an

Dear Mr. Balaji,


1. To an extent he is right. However, the reports are values for standard and in absence of alternate sources respectively. Since you are in a municipal corp. limit, you have to consider the column A standard.


2. The water shall be potable after removal of turbidity, iron, color and odour. However, test it for E.coli and Faecael coliform (Bacteriological test) and also, use a R.O for drinking water. You may use a wall mounted unit for the same. Water Softener for washing of clothes is also desirable as water is igh in hardness and alkalinity.


Regards,


Taral Kumar
Executive Director
Akar Impex Pvt. Ltd.
Noida, Uttar Pradesh

7. Dear Mr. Balaji, 1. By and

Dear Mr. Balaji,


1. By and large the various constituents/parameters of your bore well water are within the “Desirable/acceptable " limits for most of them.
2. The water has a colour mostly due to the prescence of iron which is almost 3 times the permissible limit.
3. The mystery is the “objectionable" odour in the water. If you are able to describe what kind of odour, I might be able to suggest some treatment.One method is to pump out the water from the well into an open tank which can hold approximately 500 lits by allowing the water to gush like a fountain and collect in the tank. This could help remove much of the odour and part of the iron too. This method is called “aeration".
4. This aerated water should then be pumped through an iron removal filter and after that through an Activate Carbon filter to remove any remaining traces of colour and odour.


You should be careful about what you buy as there is no SINGLE filter that will remove, iron, colour and odour.
If you need more advice you are welcome to contact me.


Regards


S.S.Ranganathan
Water Management Consultant
Ion Exchange
Bangalore

8. Dear Mr. Balaji, Yes, as the

Dear Mr. Balaji,


Yes, as the filter manufacturer says, A and B can be taken as sort of minimum and maximum. Apart from higher values of iron, other parameters are closer to a so no need to worry if iron is removed effectively.


Suneel Pandey, PhD
Fellow, Centre for Environmental Studies
The Energy and Resources Institute (TERI)
India Habitat Centre, Lodhi Road
New Delhi 110 003

9. Dear Mr. Balaji, Once you are

Dear Mr. Balaji,


Once you are able to reduce the Iron (thereby odour and colour) you have good potable water. As a matter fact the calcium content is good (and not very high either). This is good for building of bones. However if you are not able to reduce odour you may also use an activated Carbon filter.


I am not an advocate for blind use of reverse osmosis as long as the TDS is below 250 - 300 mg/l, which would reduce Calcium and other necessary minerals. To remove bacterial contamination, if any, it is best to use an Ultra Violet dosing system and maybe with Ultra Filtration.


Keshav Agarwal
Technical Consultant
CTO - Biotech Services
Noida, UP

10. Water Quality

Dear Sri Balaji,

     1-   Turbidity is generally associated with iron.So if you attach an Iron removal filter ofcourse the turbidity can be lowered.

     2-   The contents of your water sample ( tested parameteres) are not in an alarming condition.But you have to manage the well water by using activated Carbon treatment -home made filtration by sand,charcoal...etc or a branded one from the market,as you think-with the proper maintenance.Sign an Annual Maintenance Contract from the seller, if possible.Test the output water by yourself.

                                                         Vinod,chemist,Kerala water Authority,Quality control Division ,Calicut-9-Kerala

11. Thanks a lot

Thank you very much for all who have responded. Now I have a fairly good idea on what I need to do.

rbalaaji

12. Drinking water from borewell - treatment options

Sir

A borewell from a small housing project was taken for water supply for the construction of flats near PMC limits on Sinhgad Road & the project has been completed from the available water from borewell.

Now, we have to use the same borewell water for drinking purpose. The sample was tested for potability in standard laboratory which indicated the following parameters exceeding the standards & suggested that we go for suitable water treatment plant. We have to use this water only for drinking purposes.

The water requirement is about 600 litres/day.

1) Total dissolved solids - 592 mg/l  (<500)

2) Alkalinity( CaCO3) - 152  mg/l  (<200)

3) Total Hardness -  288  mg/l   (<300)

4) Total Coliforms  - 84  CFU/ml  (<1)

5) E.coli (qualitative) - present (absent)

They have advised us to use suitable treatment plant in order to use the water for drinking.

Request you to suggest a suitable solution for this problem

V B Joshi

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