NMBM fears that day zero has arrived

bwana

MyBroadband
Super Moderator
Joined
Feb 23, 2005
Messages
82,437

Last updated: July 22, 2021

DamCapacity (when full)Available (Ml)Available (%)
Kouga125 910 Megalitres4 897 Megalitres3.89 %
Churchill35 240 Megalitres4 538 Megalitres12.88 %
Impofu105 757 Megalitres15 174 Megalitres14.35 %
Groendal11 638 Megalitres2 705 Megalitres23.24 %
Loerie3 026 Megalitres763 Megalitres25.21 %
Combined281 571 Megalitres28 077 Megalitres9.97 %

Last updated: July 23, 2021

DamCapacity (when full)Available (Ml)Available (%)
Kouga125 910 Megalitres4 942 Megalitres3.93 %
Churchill35 240 Megalitres4 682 Megalitres13.29 %
Impofu105 757 Megalitres15 174 Megalitres14.35 %
Groendal11 638 Megalitres2 705 Megalitres23.24 %
Loerie3 026 Megalitres1 281 Megalitres42.33 %
Combined281 571 Megalitres28 784 Megalitres10.22 %
 

bwana

MyBroadband
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Feb 23, 2005
Messages
82,437
Guess that's it for the rain - time to pack these bad boys away until next time (much to the delight of the missus).

IMG_8047.JPG
 

Priapus

Executive Member
Joined
Jun 8, 2008
Messages
7,706

Last updated: July 23, 2021

DamCapacity (when full)Available (Ml)Available (%)
Kouga125 910 Megalitres4 942 Megalitres3.93 %
Churchill35 240 Megalitres4 682 Megalitres13.29 %
Impofu105 757 Megalitres15 174 Megalitres14.35 %
Groendal11 638 Megalitres2 705 Megalitres23.24 %
Loerie3 026 Megalitres1 281 Megalitres42.33 %
Combined281 571 Megalitres28 784 Megalitres10.22 %
That’s a decent increase. Hoping it continues.
 

bwana

MyBroadband
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Feb 23, 2005
Messages
82,437
Hmmm, my pump is also 750W and I have no problems regarding pressure whatsoever (±5 bar), although I plumbed it directly into the house. It might be that my pump is placed on a lower level than the underside of the tanks, it being a slightly sloped property, which is aiding the pressure?

Been running off the tanks for about 90% of the time since 2008.
Do you think running your house off the tanks costs more or less in terms of electricity use than the cost of the water you're saving? I wonder what the tipping point is?

Say I use 9Kl of municipality water PM, which costs me R150. How much would it cost to run my 750w pump for long enough to pump that same 9Kl from my tank?
 

Gordon_R

Honorary Master
Joined
Jul 5, 2009
Messages
18,242
Do you think running your house off the tanks costs more or less in terms of electricity use than the cost of the water you're saving? I wonder what the tipping point is?

Say I use 9Kl of municipality water PM, which costs me R150. How much would it cost to run my 750w pump for long enough to pump that same 9Kl from my tank?

If you only look at the cost of electricity, a rainwater tank is far cheaper. However the capital and other running costs are considerable, if you need various filters, float and/or micro-pressure switches, extra piping, bypass valves, and maintenance of all of the above. For example my cousin's pump overheated and caught fire, and insurance didn't cover unspecified items.
 

Supervan II

Expert Member
Joined
May 8, 2011
Messages
2,366
Do you think running your house off the tanks costs more or less in terms of electricity use than the cost of the water you're saving? I wonder what the tipping point is?

Say I use 9Kl of municipality water PM, which costs me R150. How much would it cost to run my 750w pump for long enough to pump that same 9Kl from my tank?
Aah, good question! One which does not concern me too much though. ;)

I very much doubt that I am actually saving anything, TBH. It's just that I/we are so water-wise that almost every drop of water is used and re-used. If/when I decide to wash cars I can do so with a hosepipe/HP washer without contravening any water restrictions when they are in effect.

I have a socket in my bedroom that the pump is plugged into and that socket is switched off most of the time. When we need to wash dishes/do laundry/shower, we switch pump on and the controller decides when to pump and for how long. Once done with a task we switch said socket off. The toilet cistern is always refilled with recycled water from shower/cold water from geyser. Washing hands is done by simply opening up the hot-water tap in our en-suite (our geyser is still the old type that has a cistern - which would refill itself when pump is running).

Discipline is obviously paramount, but it's just the two of us for 11/12. Decembers we have a guest (my nephew) and he is also used to the procedure. Having a whole household full of people would probably not necessitate such drastic measures! :D

Leaving the pump switched on 24/7 one quickly finds that you have a water leakage somewhere as the controller will continuously switch the pump on/off as the pressure rises/subsides! Then it's out with the plumbing tools and DIY the cause (which invariably leads to a leaking tap washer!). You would also quickly notice if the pump is running for an extraordinary amount of time for any given task, which is how I once found that we had an underground pipe that was leaking. A plumber soon sorted out that one using a gas detector - at at a rather princely sum, I might add.
 

bwana

MyBroadband
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Messages
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I have a socket in my bedroom that the pump is plugged into
I use a Sonoff switch so I can switch it on/off remotely or on schedule. It's also connected wirelessly to a couple of lamps around the house so we know when the pump has been left on.

If you only look at the cost of electricity, a rainwater tank is far cheaper.
I have my doubts but not the maths to back it up. I wonder how many hours of running a 750w pump you get for R150?

However the capital and other running costs are considerable, if you need various filters, float and/or micro-pressure switches, extra piping, bypass valves, and maintenance of all of the above.
I just use part of a r150 hose pipe at this stage. I connect it to an external tap and switch the mains off.
 
Last edited:

Leno

Expert Member
Joined
May 15, 2005
Messages
1,978
If you paying R2 a unit

R150 / R2 = 75 units
75 Kwh (units) / 0.75 kw (pump) = 100 Hours
 

Supervan II

Expert Member
Joined
May 8, 2011
Messages
2,366
If you only look at the cost of electricity, a rainwater tank is far cheaper. However the capital and other running costs are considerable, if you need various filters, float and/or micro-pressure switches, extra piping, bypass valves, and maintenance of all of the above. For example my cousin's pump overheated and caught fire, and insurance didn't cover unspecified items.
Huh? My system was done DIY and there is no maintenance required, other than switching over to municipal supply when/if the tanks are almost empty and cleaning out of the in-line filter. Should one want to treat the water, a bag of 500g calcium hypochlorite is sufficient for 50KL.

ETA: Oh yeah, another "maintenance task" (for me) is to bang on the tank(s) every so often to determine water level(s)! :ROFL: :ROFL: :ROFL:

For those who are interested in my setup:
2 x 2500l tanks
1 x 5000l tank
3 x PVC threaded ball valves - 25mm
1 x 0.75KW pump
1 pump controller
1 x 16 amp plug
1 x 5m twin & earth
1 x 15mm brass t-piece
4 x 22mm brass t-piece
1 x 22mm brass non-return valve (for the one 2 500l tank that is slightly lower than pump
1 x ball valve for lower tank
1 x 15mm lever ball o-stop
1 x bib tap (plastic)
1 x in-line microfilter - 22mm
± 50m polycop pipe - 22mm
± 5m polycop pipe - 15mm

When I bought my tanks they were going for ±R3500 for 5000l & ±R1750 for 2500l :oops:
 

bwana

MyBroadband
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Feb 23, 2005
Messages
82,437
If you paying R2 a unit

R150 / R2 = 75 units
75 Kwh (units) / 0.75 kw (pump) = 100 Hours
Closer to R2.15 but thanks!

Now I just have to have you work out how many litres the pump will move in that time. :)

Huh? My system was done DIY and there is no maintenance required, other than switching over to municipal supply when/if the tanks are almost empty and cleaning out of the in-line filter. Should one want to treat the water, a bag of 500g calcium hypochlorite is sufficient for 50KL.

For those who are interested in my setup:
2 x 2500l tanks
1 x 5000l tank
3 x PVC threaded ball valves - 25mm
1 x 0.75KW pump
1 pump controller
1 x 16 amp plug
1 x 5m twin & earth
1 x 15mm brass t-piece
4 x 22mm brass t-piece
1 x 22mm brass non-return valve (for the one 2 500l tank that is slightly lower than pump
1 x ball valve for lower tank
1 x 15mm lever ball o-stop
1 x bib tap (plastic)
1 x in-line microfilter - 22mm
± 50m polycop pipe - 22mm
± 5m polycop pipe - 15mm

When I bought my tanks they were going for ±R3500 for 5000l & ±R1750 for 2500l :oops:
I put my 2x 5000l tanks where I used to have the jacuzzi so the electrics was already there. :) I still need to connect the smaller 2500l tank if I can.
 

AchmatK

Executive Member
Joined
Dec 8, 2009
Messages
7,801
Do you think running your house off the tanks costs more or less in terms of electricity use than the cost of the water you're saving? I wonder what the tipping point is?

Say I use 9Kl of municipality water PM, which costs me R150. How much would it cost to run my 750w pump for long enough to pump that same 9Kl from my tank?
9kl in CT will cost about R400 for the water and sewerage which is linked to water consumption. Excluding the water connection charge.

As of end of June I've not had to pay CoCT close to R85k for water and sewerage with very little maintenance costs. In fact, the last time I had to pay for anything was for a new pump in August 2019. And since going solar, CoCT is not getting anything from me for electricity consumption. My setup, albeit a well with water less than 4m deep, set me back under R15k including all the maintenance over the years.
 

bwana

MyBroadband
Super Moderator
Joined
Feb 23, 2005
Messages
82,437

Last updated: July 23, 2021

DamCapacity (when full)Available (Ml)Available (%)
Kouga125 910 Megalitres4 942 Megalitres3.93 %
Churchill35 240 Megalitres4 682 Megalitres13.29 %
Impofu105 757 Megalitres15 174 Megalitres14.35 %
Groendal11 638 Megalitres2 705 Megalitres23.24 %
Loerie3 026 Megalitres1 281 Megalitres42.33 %
Combined281 571 Megalitres28 784 Megalitres10.22 %

Last updated: July 26, 2021

DamCapacity (when full)Available (Ml)Available (%)
Kouga125 910 Megalitres5 017 Megalitres3.98 %
Churchill35 240 Megalitres4 640 Megalitres13.17 %
Impofu105 757 Megalitres15 446 Megalitres14.61 %
Groendal11 638 Megalitres2 705 Megalitres23.24 %
Loerie3 026 Megalitres790 Megalitres26.11 %
Combined281 571 Megalitres28 598 Megalitres10.16 %
 

thehuman

Expert Member
Joined
Nov 2, 2004
Messages
3,702

Last updated: July 26, 2021

DamCapacity (when full)Available (Ml)Available (%)
Kouga125 910 Megalitres5 017 Megalitres3.98 %
Churchill35 240 Megalitres4 640 Megalitres13.17 %
Impofu105 757 Megalitres15 446 Megalitres14.61 %
Groendal11 638 Megalitres2 705 Megalitres23.24 %
Loerie3 026 Megalitres790 Megalitres26.11 %
Combined281 571 Megalitres28 598 Megalitres10.16 %
Already heading down , don't think we gained 1 week.
 

bwana

MyBroadband
Super Moderator
Joined
Feb 23, 2005
Messages
82,437

Last updated: July 26, 2021

DamCapacity (when full)Available (Ml)Available (%)
Kouga125 910 Megalitres5 017 Megalitres3.98 %
Churchill35 240 Megalitres4 640 Megalitres13.17 %
Impofu105 757 Megalitres15 446 Megalitres14.61 %
Groendal11 638 Megalitres2 705 Megalitres23.24 %
Loerie3 026 Megalitres790 Megalitres26.11 %
Combined281 571 Megalitres28 598 Megalitres10.16 %

Last updated: July 27, 2021

DamCapacity (when full)Available (Ml)Available (%)
Kouga125 910 Megalitres5 017 Megalitres3.98 %
Churchill35 240 Megalitres4 640 Megalitres13.17 %
Impofu105 757 Megalitres15 607 Megalitres14.76 %
Groendal11 638 Megalitres2 705 Megalitres23.24 %
Loerie3 026 Megalitres784 Megalitres25.91 %
Combined281 571 Megalitres28 753 Megalitres10.21 %
 

bwana

MyBroadband
Super Moderator
Joined
Feb 23, 2005
Messages
82,437

Last updated: July 27, 2021

DamCapacity (when full)Available (Ml)Available (%)
Kouga125 910 Megalitres5 017 Megalitres3.98 %
Churchill35 240 Megalitres4 640 Megalitres13.17 %
Impofu105 757 Megalitres15 607 Megalitres14.76 %
Groendal11 638 Megalitres2 705 Megalitres23.24 %
Loerie3 026 Megalitres784 Megalitres25.91 %
Combined281 571 Megalitres28 753 Megalitres10.21 %

Last updated: July 28, 2021

DamCapacity (when full)Available (Ml)Available (%)
Kouga125 910 Megalitres4 987 Megalitres3.96 %
Churchill35 240 Megalitres4 640 Megalitres13.17 %
Impofu105 757 Megalitres15 656 Megalitres14.8 %
Groendal11 638 Megalitres2 705 Megalitres23.24 %
Loerie3 026 Megalitres784 Megalitres25.91 %
Combined281 571 Megalitres28 772 Megalitres10.22 %
 

bwana

MyBroadband
Super Moderator
Joined
Feb 23, 2005
Messages
82,437
PARTS OF THE CITY MAY EXPERIENCE WATER DISRUPTIONS AS A RESULT OF EMERGENCY REPAIRS ALONG THE CHURCHILL PIPELINE.

July 28, 2021

The Municipality is currently having difficulty supplying water to certain storage reservoirs due to an emergency repair along the Churchill pipeline.

This jeopardizes the system because storage conditions are still poor due to the ongoing drought. Contractors are currently on-site assessing the repair needs.

The following areas may experience low pressure or disruptions:
1. Parts of Walmer
2.Walmer Downs
3.Mangold Park
4.Glen Hurd
5.Newton Park
6.Greenacres
7.Parts of Cotsworld
8.Parts of Schauderville
9.Linkside
10.Mill Park
11.Parts of Central
12.Mount Croix
13.Perridgevale
14.Deal party
15.North End
16.Sydenham
17.Seaview
18.North End
19.Central
20.Parts of Gelvandale
21.Summerstrand
22.Forrest Hill

The situation will be closely monitored, and water tankers will be made available should reservoir storage levels deplete. These water tanker positions will be advertised on social media and can also be inquired about by calling the service delivery call center at 0800 20 5050.

Consumers are asked not to stockpile water because doing so will accelerate the depletion of storage.
We apologise for any inconvenience this has caused.
 
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