If you can't drink the tap water avoid their low cost airlines.
Last I checked, you are advised not to drink tap water in the USA.
Please do not paint all 3rd world LCC with the same brush stroke.
Going through the records, a lot of "western airlines" in the "developed world" has many serious close calls too
What generally saved the day was a combination of good ATC and good infrastructures.
Both of which are not in healthy supply out here.
It would be interesting to see how well the "western airlines" would fare out here in the 3rd world.