First port of call would be to head off to your local municipality, to the town planner department, the will be able to advise with regards to what you can and can't do on the property, they will also give you zoning information for the area you choose to start the farm, they might also require a SDP (Site Development Plan) and you will need to submit building plans to the council.
Then it would be a good idea to contact NATCON and get some advice from them with regards to permits and what they would need from you.
Some other aspects you might need to consider.
1. Will you be breeding and harvesting eggs?
2. To have more than 3 dams, to house sick, problematic/aggressive crocodiles from hurting the rest.
3. To have quarantine area for new arrivals and sick crocs.
4. To have an extra dam for housing left over stock that has not been sold or killed off.
5. Then what direction of supply would you like to go into, selling of meat or skins. Depending on the answer you would need to do research into this aspect. there are certain rules and regulation that need to be followed, standards that would be set for exports and sells of meat and skins.
I know feeding of chickens that have died on chicken farms means you may not sell the meat for human consumption, as the meat would be considered to be contaminated you may only sell the skins then.
6. You will also have to have procedure to get rid of leftover meat that has not been eaten, you may not bury it or throw it away.
If you build the dams in a loop you can re-use the water by pumping the water into a catchment dam and then letting the water run through a system of rocks, reeds and some water plants, this will allow you to refine the water.
You can also instal a biochemical system that recycles the water which then can be used again. with that being said it does not seem to be a set guideline to the quality of water.
SOUTH AFRICAN WATER QUALITY GUIDELINES Volume 6: Agricultural Water Use: AquacultureQuoted from above link, From
Chapter 3.
Characterisation of Aquaculture Water Use
The principal groups of freshwater organisms produced in South Africa are several food fish
species, eyed trout ova, trout and black bass fingerlings for stocking of angling waters,
ornamental fish and plants, crocodiles and food plants (waterblommetjies). Crocodile and
waterblommetjie farming has been excluded from this edition. The reason for this is that too
little is known of the water quality requirements for crocodiles to develop a practical set of
guidelines.
I have attached some documents that was suggested in the post above.
Lots of reading to do.
I have also attached some standards from SA and Australia with regards to keeping of crocs in captivity.
NATIONAL WATER ACT, 1998NATIONAL ENVIRONMENTAL MANAGEMENT: WASTE ACT. 2008NATIONAL ENVIRONMENTAL MANAGEMENT: BIODIVERSITY ACT, 2004No. 25 of 1999: National Heritage Resources Act, 1999.SOUTH AFRICAN NATIONAL STANDARD Crocodiles in captivityThis link is not related to South Africa but the information inside would go along way in setting up a crocodile farm with good standards.
Code of Practice Page 1 of 12 • Department of Environment and Heritage Protection QueenslandREGISTRATION OF CROCODILE FARMS FOR EXPORT STATUS