Health & safety standards in Norway are generally very high. Hygiene standards in hotels and restaurants are strictly enforced by the government food agency. Tap water is generally of high quality, and perfectly safe to drink anywhere unless warning is clearly given. There is absolutly no need to buy water in a bottle.

Borrelia bacteria transmitted by ticks is an increasing problem in Norway (around the coast from Oslo to Trondheim), borrelia can cause Lyme disease. Inspect skin after walking or playing in tall grass. The common European adder (vipera berus) is found throughout mild parts of Norway and active in warm weather. There are no dangours animals in mainland Norway (note special conditions on Svalbard), although deers can be a road hazard. Lion's man jellyfish is very common and can cause serious discomfort - clean with hot (40 to 45 Cesius), salt water.

Norway has very low crime rates, police doesn't even carry guns. Most crimes are petty thefts and vandalism. Do not leave valuables in your car in public parkings and beware of pickpockets in crowded areas. Violent crimes are extremely rare and visitors have no reason to worry about their personal security. Normal big-city precautions do however apply down-town Oslo (around the the train station) as there is some drug dealing and begging. Note that prostitution is now illegal in Norway. Begging is legal, while drugs are not. Also note that drinking alcohol in the street is not allowed, unless in a restaurant/cafe of course. Common scams are extremely rare, but there are occasional reports of betting in the streets (most certainly a scam or attempts of stealing wallets). In Norway, it is illegal to carry knife (or similarly sharp objects) in a public area (except when necessary for professional use or outdoor activity).

Norway has a unified police force (there is only one type of police). Contact police on phone 112 in case of serious crime, major accidents and car crashes involving injured persons (or causing traffic jams). There is no reason to contact  the police in case of car crashes without injured persons. Report to the closest police station in case of minor crimes (thefts, pickpocket etc).

Speed limits are low and most people drive careful. Don't drink and drive. Traffic rules are strictly enforced. Large elks (US: moose) or  smaller red deers (US: elk) suddenly jumping into the road at dusk or dawn maybe an unusal hazard for foreign visitors.

The Norwegian police is clean, do not even consider bribing a police officers (or any other public servant).

Norwegian nature is free for anyone to explore, but note that you must care about your own safety, there are generally no warning signs or fences in the wilderness. Do not go walk on glaciers without proper training and equipment. Do not approach glaciers. Glaciers are treacherous.

Norway has a long and varied coastline. Many tourists underestimate the power of big waves coming in from the Atlantic. Do not challenge the ocean waves! Get safely on shore when rough weather is coming in. Every year tourists are killed or in life threatening danger because they go out in small boats in bad weather, because they stand too close to the breaking waves or because they approach waterfalls or glaciers. Always wear a safety vest when in a small boat. Observe advice and instructions from locals. Do not "push the limits" near waterfalls or high cliffs, slippery stones and loose ground frequently cause serious accidents.