of the few rooms in the house that allows for a degree of privacy. Some toilet rooms are equipped with a bookshelf, in others people may enter with a newspaper, and some are even filled with character goods and posters. Even so, these toilets are whenever possible, in rooms separate from those for bathing. This is due to a concern about separating clean from unclean, and this attribute is a selling point in properties for rent. Both the traditional squat toilet and the high-tech toilet are a source of confusion for foreigners unaccustomed to these devices. There are humorous reports of individuals using a toilet, and randomly pressing buttons on the control panel either out of curiosity or in search for the flushing control, and suddenly to their horror receiving an unexpected jet of water directed at the genitals or anus. As the water jet continues for a few seconds after the novice jumps up, he also gets himself or the bathroom wet. Many Japanese toilets now feature pressure-sensitive seats that automatically shut off the bidet when the user stands up. Many have the buttons labeled in English to reduce culture shock. In January 2017, the Japan Sanitary Equipment Industry Association agreed to standardize the iconography used on control panels of Japanese toilets, in an attempt to reduce confusion by foreign visitors. Environmental aspects The environmental impact of modern style washlets differs from regular flush toilets. Modern toilets use less water than old toilets, and the self-cleaning options also reduce the amount of detergent. Some toilets even change the amount of water for the flush depending if the seat was flipped up (indicating male urination) or not. They also cause less toilet paper to be used. On the other hand, these toilets also consume energy, and are estimated to consume 5% of the energy of the average Japanese household. In rural areas, toilets that use very little or no water have also been designed. These are also considered as emergency toilets in case of earthquakes. Toilet sinks Many toilets in Japan with a water tank include a built-in sink. This is a simple water-saving grey water system: clean municipal water is used to wash the hands, then the waste water from hand washing is used to fill the tank for flushing. It also is a space saving feature in small, older bathrooms. Market acceptance Washlets in Japan cost from US$200,