I would like to contribute a little to this topic. I hope the interest is still high among those who are environment conscious.

One of the most difficult thing with rain water harvesting implementation in Malaysia is the lack of industry players and lack of government support. Nonetheless, there are a few companies that do offer the product but due to the cost, many are deterred.

I have actually inquired from the 2 companies mention on this thread which are basically DD Techniche and MyHomePalm. Both are located at Subang Jaya and Puchong respectively.

For a homeowner like myself, the biggest turn off is the high price of installing a basic rain water harvesting setup. For a setup to be functional, 2 main part are required for RWH. The leaf eater and first flush diverter. Both these device unfortunately seem like a simple device and does not seems to cost a lot but are sold at a premium. The rest of the devices such as tanks are easily available on the market.

The pricing by the vendors below

DD Techniche  - 3P Technik Filter Collector is both a leaf eater and first flush system. The cost is RM450
MyHomePalm - Leaf Eater Rain Head. The cost RM799. No price on first flush. But looking at the price of leaf eater, the first flush will probably be more.

After a long search, I have manage to find a RWH vendor from Australia that sells a combo product as above. The price is AUD$70 leaf eater + first flush + AUD$50 for air freight. That is total AUD$122 or around RM380.

The vendor did mention if I do a bulk purchase, like 20-30 units, he would propose sea freight which should at least reduce cost of shipping by half.

Any takers?