September 8, 2020

In my recent blog (https://dinshawavari.com/2020/08/29/water-water-everywhere-but-not-a-drop-to-drink-the-rime-of-the-ancient-mariner-by-samuel-taylor-coleridge/), I was only concentrating on recycling rainwater for Karachi.  However, the inadequacy of the Karachi’s infrastructure to deal with … RAIN … has created havoc to our City.

Recently I heard Arif Hasan, planner, architect & activist (http://arifhasan.org/about-arif-hasan), on a Samaa News interview (https://www.youtube.com/watch?v=vCb6OIWWsoo).  The interview is an eyeopener and very insightful as Mr Hasan traces the roots of the problem, the history of our formal drainage systems, Karachi’s unchecked sprawl from the 1950s and especially 1970s leading to the drainage & sewer breakdown, we face currently.  In identifying these problems, Mr Hasan implicitly provides the solutions too.

There are two courses of action required –

  • I have already addressed rain water harvesting & recycling;
  • Alongside this, the city’s RAIN WATER and SEWAGE DRAINAGE systems have to be urgently addressed on a professional basis.

Basically, Karachi needs to “get back to the drawing board” by using independent, non-partisan town planners and architects (like Arif Hasan himself).  We have ONE YEAR lead time to fix the city- or at least be able to complete some of the main areas of the City – before the next rains hit us.

There are thousands of little drains – nullahs – (some naturally formed) which should feed into 64 large Nullahs which lead into Malir & Landhi Rivers, which in turn flow into the sea. 

PROBLEM:          When even one of these nullahs are blocked or stopped, it prohibits rainwater to flow into the sea- and instead, it floods the City.  This is the root problem.

SOLUTION:         So, firstly, the Entrance & Exit points of all Nullahs should remain undisturbed from encroachments, unplanned structures and debris.

PROBLEM:          Next, when roads are being built, their drainage is also part of the scope.  However, Arif Hasan points out that when the drains are made, they don’t lead anywhere – they end where the road ends … GO FIGURE!  So, when the [so-called] drains fill up with rain – from the road itself – the overflow goes back onto the roads again … and … the “ROADS GET CONVERTED INTO NULLAHS”!

SOLUTION:         So, the second action is that road drains must connect to the established nullahs, so there’s a formal route for the water to naturally flow into the sea (more on formal drains below).

PROBLEM:          In the 1950s, Katchi Abadis (informal housing settlements) sprang up unchecked.  There was no planning for their sewage drains, so the katchi abadis drained their sewage into Karachi’s nullahs…a practice which continues to this day.  In the 1970s, when the formal housing schemes and neighborhoods were created, they continued the same practice of draining their sewage into rain water drains because no sewage drains or trunk sewers were planned … again, a practice that continues to this very day! 

SOLUTION(s):    So, thirdly, TRUNK SEWERS leading into FORMAL SEWER DRAINAGE SYSTEMS (& NOT into the rainwater drains) has to be planned & executed.

When this is done, all current formal Storm water drains must be cleaned off all the sewage sludge; all sewage outlets leading into such rain water drains removed and capped; and new storm water drains built to accommodate the City’s sprawl (it is massive task and a daunting one, at that).  Storm water drains must ONLY be used for rain water drainage.

Each of these systems has to be physically separate and independent from each other – no one system should be able to lead into another system in case of a breakdown; each of these systems has to have its own failsafe mechanisms in place; have their own access points for repairs, replacements & maintenance in place; and have their dedicated teams ready to fix and clean them.

PROBLEM:          The World Bank funded & completed a successful Sewage treatment plant in the 1990s.  However, it never started operations.  Why … because there were no trunk sewer systems designed or created to capture rainwater which would have flowed into the treatment plants; likewise, nothing was designed to capture the sewage (which instead was dumped into the rain water drains) to drain into such treatments plants either.

SOLUTION(s):    Fourth- once these new Trunk Sewers and formal Sewage system captures all types of drains (be it rainwater or sewage), they should ONLY flow into Sewage treatment plants (plants…PLURAL); and then they should flow into new nullahs connecting to Malir & Lyari rivers.

Malir & Lyari rivers themselves need to be dredged and maintained to accept this drainage.

A recycling solution also lies in utilizing waste from treatment plants (after being treated) for watering the City’s green belts instead of letting it flow into the sea.

PROBLEM:          Samaa interestingly also points out (https://www.samaa.tv/news/2020/08/karachi-rain-water-weather-flooding-monsoon-update-storage-shortage-drought/) that Karachi’s “concrete jungle” doesn’t have the capacity to absorb any of the rainwater so as to shore up valuable ground water.  “The advantage would have been that the water table would have been replenished”.

SOLUTION(s):    So, we need to create large swaths of “green areas”;

We have to breakdown this concrete jungle and rebuild public areas with gardens and trees;

Town planning has to be formalized, professionalized and held accountable;

Katchi abadis may very well have to be relocated (like the successful Lyari/Orangi resettlement project) into new, formal neighborhoods- this can be successfully & mutually negotiated by giving these resettlers title to their new properties, instead of the usurious “pagri” and rental system most of these katchi abadi dwellers have to content with currently;

Lastly, roads and current infrastructure will also have be replanned, replaced or even relocated to accommodate these new services.

So, what is the STARTING POINT of all these actions?

               A long term City & infrastructure Plan has to be created, agreed by all political stakeholders and implemented & monitored professionally.  This Plan will continuously need amendments and updating, which cannot be done without a non-partisan, political approach to addressing Karachi’s problems professionally by the Chief Minister, Government AND Opposition parties working together, instead of the politics of destruction – the destruction to the City of Karachi!

WATER, WATER EVERYWHERE … BUT NOT A DROP TO DRINK (“The Rime of the Ancient Mariner” by Samuel Taylor Coleridge)

(Long Article)

Samaa recently wrote https://www.samaa.tv/news/2020/08/karachi-rain-water-weather-flooding-monsoon-update-storage-shortage-drought/, with very good suggestions for capturing rain water- which reminded me of my post of last year (https://dinshawavari.wordpress.com/2019/03/25/water-water-everywhere-but-not-a-drop-to-drink/).  This is an apt time to re-summarize and add on to these thoughts-

Weather patterns have changed for Pakistan, especially Karachi.  We are seeing colder winters, hotter summers … and heavier rains!  The last I remember of these types of rains were in the 1970s.

Karachi is facing severe monsoon rains for the first time in decades.  It’s a good thing too – it cleans up the city; there is more greenery; the temperature drops; and life is so much more pleasant; and the three major reservoirs supplying water to our City get filled.

Yet, with the rains upon us there is no drinking water in sight!  Like South Africa’s current problem, Pakistan is heading for a water crisis in the coming decade.

Rain is God’s gift to Earth and we are rebuffing this free resource!

The time to act is NOW … with no POLITICS or partisanship involved, through micro & macro means.  The provincial & federal governments cannot do this on their own- we as citizens have to help out too.

  1. Let’s go back to school – literally – and immediately start teaching water saving to all nursery, kindergarten and primary school children! (Long Term Goal)
  2. Water faucets can and should be changed to modern fittings which save water.  I saw a very interesting concept at https://www.alteredcompany.com/ .  Their water aerators/nozzles give a mist giving the same cleaning effects but at a fraction of the water wastage.  Why can’t our domestic companies follow suit and make it mandatory for all faucets to be of this type?
  3. Implement recycling “domestic” water for kitchen & clothes washing and swimming pool top ups;
  4. Implement “waste” water recycling (from WC’s and urinals) for gardens and exterior washings (can be used for washing cars, external patios, etc). 
  5. Implement drip irrigation for all gardens, plants & farms –Middle Eastern countries are proof that such systems work – and theoretically it should be even easier for us to do! 
  6. All watering for gardens & plants should be done at/after sunset;
  7. Domestic staff HAVE to be taught to conserve water (for that matter all our utilities);
  8. Individual water catchment systems need to be created – each building in our cities can easily have their own rainwater harvesting system – it doesn’t have to be expensive.  In our part of the world, Tamil Nadu leads the way!  Brazil, Singapore, Hawaii & Australia are other successful examples.  The cost and process of making a catchment system is not prohibitive or unreasonable.  It can even work effectively with a simple tarpaulin (refer http://www.oas.org/usde/publications/unit/oea59e/ch10.htm as an example).  (Here’s another source- https://outdoortroop.com/how-to-capture-and-store-enough-rainwater-for-your-cabin/).

On the macro side, our federal & provincial governments –

  1. Have to put aside “-1 sum” politics (in this case “-1” referring to provinces) in favour of the citizens of Pakistan.
  2. Like Hawaii, we need to create water catchment areas for rainwater in each province – NO RAIN WATER SHOULD BE WASTED.
  3. Mini DAMS is a must – starting from the north of Pakistan’s main rivers down south to the Arabian Sea – so that our fresh water does not drain into the sea and is instead used productively.  Politicians (not us citizens!) have concerns that water from such dams would not be used equitably – but if Pakistan & India’s Indus Water Treaty of 1960 can withstand the “test of time”, I’m sure our own provinces can also reach comprehensive, equitable & binding agreements.

Not a drop of fresh water in Pakistan should be allowed to flow into the Arabian Sea and instead equitably diverted East & West to all provinces as it flows southwards!

  • The current government’s tree-plantation drive is a correct first step – “growing trees take water from the soil and release it into the atmosphere. Tree leaves also act as interceptors, catching falling rain, which then evaporates causing rain precipitation elsewhere — a process known as evapo-transpiration […] strategically planting trees can bring rain to regions that need it most.” (https://forestsnews.cifor.org/10316/make-it-rain-planting-forests-to-help-drought-stricken-regions?fnl=en). 
  • Desalinization plants – this is a macro project and while some smaller units have been set up in Karachi, they are not being used.  Besides rainwater, ocean water is an absolutely FREE resource- why are we not using it?  We take loans to pay off other loans … and loans for building our arms … why can’t we take loans & grants for providing drinking water to our population?

There is a great need for our governments (plural!) collectively to lead the way in collecting & storing rainwater; promoting households & commercial buildings to create water catchments & reuse rainwater; and teach & implement water saving techniques to the population!

THE WATER IS FREE people … we just need to optimally capture this very very scarce resource and utilize it correctly in & for our Country.

A future “Malir River-Basin Dam”?

(Photo credit- https://www.researchgate.net/figure/Malir-River-Basin-MRB_fig1_325475799)

August 12, 2019

Last week I had written about recycling & harvesting rain water (https://dinshawavari.com/2019/08/08/and-the-rains-are-upon-us/).  Then we faced rains in Karachi which I have not seen in decades.  The “natural” effect of this was the massive misinformation & incorrect (some genuinely mistaken) social media warnings & alerts on the effects of the rains in Karachi. 

One post in particular, on the flooding of Malir River, got me thinking.  At the outset, let me clarify that these are my personal views and I hope it doesn’t lead to controversy …

               Water flowing down Sindh province makes its way into Malir River, which generally lays dry through the year.  It’s only when we have sudden rains or this current set of rains when it fills up, and in the latter case, overflowed too.

               The major sources of Karachi’s water are the Hub dam, Keenjhar lake & Haleji lake.

Why don’t we “DAM” up the Malir River Basin within Karachi’s limits?  Why let the precious rain water go to waste, into the Arabian Sea?  If Karachi is seeing its own effects of climate change and our soothsayers predict more of this to come, let’s channelize that water into a massive & natural reservoir down Malir River.  A dam in the middle of the City will also become its own, inbuilt tourist attraction (just like Nasser Dam is in Egypt).  It’s just a matter of finessing this future dam as the main structural setup is already in place.

There will NOT be any negative environmental effects – in fact it will save water; be a positive social change for the people of Karachi through tourism; it will control the environmental pollutants currently flowing into the Malir River. There will be other benefits!

Do you water experts out there agree to this- or a variation of this idea?

(Photo credit- Samaa TV)


August 8, 2019

rainwater harvesting.jpg

(Photo credit- https://www.instructables.com/id/20-Rainwater-Catchment-System-No-Gutters-Required/)

Ironically, in March, I had blogged https://dinshawavari.com/2019/03/25/water-water-everywhere-but-not-a-drop-to-drink/.

… and now the rains are upon us and we don’t have any catchment system.

Karachi is facing proper monsoon rains for the first time in decades.  It’s a good thing too – it cleans up the city; there is more greenery; the temperature drops; and life is so much more pleasant; and the three major reservoirs supplying water to our City get filled.

What is lacking are individual CATCHMENT systems.  Each building can easily have their own rainwater harvesting systems – it doesn’t have to be expensive.  After the last set of “rains” a few weeks back (though our rains are nothing compared to what India and Bangladesh have to go through during their monsoons and cyclone seasons ☹) I started reading up on rainwater harvesting systems.  In our part of the world, Tamil Nadu leads the way!  Brazil, Singapore & Australia are other successful examples.

Just as an example, when reading this website http://www.oas.org/usde/publications/unit/oea59e/ch10.htm, I realized the cost and process of making a catchment system is not prohibitive or unreasonable.  It can even work effectively with a simple tarpaulin.

There is a great need for our Government to lead the way in promoting private households, buildings and tall rises to try to catch and reuse rainwater – the WATER IS FREE PEOPLE … we just need to capture this very very scarce resource and utilize it for non-drinking purposes.

(Here’s another article- https://outdoortroop.com/how-to-capture-and-store-enough-rainwater-for-your-cabin/).

rainwater catchment

(Photo credit-  https://radio.krcb.org/post/rainwater-catchment-systems)