I really fail to see why you need a filter when taking water from the depths. Never had a problem in 17 years without one, 14,000Baht is quite a number of bottles of Bells.
I have a filter under the kitchen sink which operated for 13 years for both well water and government water. The new kitchen fitters disconnected it and reconnected but it was a lash up and leaked. I removed it from the system and never got around to reconnecting it. In truth I would suggest that the filter would be more appropriate for the government water than deep well water.
Better safe than sorry. I feel happier with a filter on the system and I have always wanted to fit one to the inlet side of the Government supplied water but never got around to it. I cleaned my tank six months ago and already there is 2 to 3 cm of sludge in the bottom. The Government supplied water has never been clean and the quality varies from day to day. I am happy to be saying goodbye to what is now a non-existent supply and changing to a source over which I have full control. Don't forget, stage 2 of our system will add a Reverse Osmosis filtration system to provide safe drinking water. The filter that is being fitted compliments and is part of this system - even if it cost mega bottles of Bells.
I had just finished typing the earlier entry to find that they had disassembled the pipes to the borehole and removed the inner piping. They were not happy with the rate of flow and wanted to draw water for a deeper depth. I can confirm, as I have seen with my own eyes, that the first section is now 12 metres of 3/4" pipe with a rough stone filter on the end. This was inserted in the hole to be joined by 10 metres of 1" pipe. The venturi device was used to connect both sections of the pipe together, i.e. its approximately halfway down the bore. So there you have it. I am using a single jet pump and pumping water from 22 metres below the surface with a good flow rate. The bore extends to 30 metres so I guess its fair to say the water is coming from between 22 to 30 metres down.
Cost so far. The cost of the Mitsan DP-301 pump with pipes and fittings was 5,800 baht. My wife gave the drilling team some beer and 5,000 baht which included a tip. The initial quote was 4,000 baht which was honoured. In addition, 1,000 baht for 2,500 litres of water to enable drilling operations. My wife is very happy with the work that was done even if they tore up the front garden after getting bogged down trying to leave. "Mai pen rai", the gardener will sort it later - sigh. Slabs to support the pump 350 baht and electrics yet to be sorted 1,000 baht. Total cost for the installation of the pump: 13, 150 baht. As agreed earlier today, the cost of the filtration system plus installation is another 14,000 baht (which I am happy to pay). Finally, I bought a 500 litre holding tank for the filtered water at a cost of 3,800 baht plus taps and fittings for the installation say 4,500 baht. Therefore, the total cost will be in the order of 31,650 baht. I will use my existing Hitachi pump to circulate the filtered water around the house.
P.S. Three neighbours were also impressed with what happened in our garden today and have placed orders for their own boreholes to be drilled over the next week. Seems they share our view that the Government water supply is a lost cause and unlikely to happen anytime soon.
@Rice should note that one of them who has placed an order is well known to him and his wife.
