Laishui County (simplified Chinese: 涞水县; traditional Chinese: 淶水縣; pinyin: Láishuǐ Xiàn) is a county in central Hebei province, China, bordering the Municipality of Beijing to the north and in the basin of the Juma River. It is under the jurisdiction of Baoding City, with a population of 340,000 residing in an area of 1,666 km2 (643 sq mi). It is served by China National Highway 112 and G5 Beijing–Kunming Expressway.