H & S  in Egypt in general is viewed as unnecessary by most of the population (who have a very fatalistic attitude), with the most common interjection being "Insh'Allah" meaning that if it is the will of Allah that they will be OK and here tomorrow then that is what will happen. If not; they will fall from the 50 mtre scaffolding (or whatever) and be in paradise: Allah's will!

Tours etc. Although excursions and activities booked through your main travel agent from your own country may be significantly more expensive than if booked locally, they have probably been checked out and the operators forced to adhere to certain standards of safety etc. by your travel company's Health and Safety department. 

Bottled water is a must.  Check that a bottle is sealed before you purchase it.  Hotels are probably the most expensive place to purchase water, followed by shops near hotels or attractions. Ordinary Egyptian stores are the safest and most economical places to do any shopping, water, pop, cigarettes and chocolate. Cigarettes in the markets are sometimes fakes which are produced in China. They are disgusting!

Shoes  If you plan on taking a trip across the water whether it is a ferry, felucca or motor boat make sure you wear sensible shoes with a good grip/tread.  Entry from the bank to the boats in Luxor is usually via proper landing/embarking points, but may be elsewhere you will walk across crumbling rock, loose stones and shingle before possibly traversing a narrow gangplank.  The locals are very friendly though, and will help you if required.

Wet floors  Be very careful if you see an Egyptian with a bucket of water.  It means they are washing floors and especially on marble this can be hard to spot.  They do not put signs out stating 'Wet floor'.

On the road As most of the kerbstones are a health hazard in themselves, most people walk on the road. It's Ok for tourists to do this also, but always be aware of the traffic around you. Although many streets are designated as "One Way"; in practice this only means one way if you fancy it! Especially dangerous are the young boys on motor cycles, who whizz about in and out of the other traffic. Always look both ways before crossing.

This is especially important at (so called) Zebra Crossings. Egyptian drivers have no idea what these pedestrian crossings actually are, as far as most of them are aware; they are just so much paint on the road! When you come across one, just look at the warnings written on the road for drivers approaching them. The writing is in English! With a 38% illiteracy rate, how many drivers will be able to read English? Be very careful when using these, as drivers will not necessarily stop when you are on the crossing. 

Vehicle Safety Coaches and buses which are used to transport tourists have to be under ten years old. This is supposed to ensure that the vehicles are (at least) not actually falling apart! (It brings to mind the "10 Year Test" which was the beginning of standard testing of privately owned vehicles in the UK, which is an annual event now, of course.) Unlike Great Britain, Egypt has no equivalent of the "Area Traffic Commissioners" who oversee vehicle safety, and so defects can be left unrectified. For instance, I have rarely been in full size coaches where the speedometer has worked, except when they are brand new. Again, your own tour operator may well have some person who randomly checks on these things, but don't just assume that all will be well.

Local 'buses are very poorly maintained, as are private cars and, seemingly, taxis. Like in most trades in Egypt, a properly skilled person is very difficult to locate. There are a host of "cowboys" and there are many who are skilled in just one aspect of any particular job which would normally require a multitude of aligned skills. (So don't mess with anything electrical either!)