Háziréti-víztározó, A water reservoir in Hungary.

The Háziréti reservoir is a man-made lake on the border of Pilisvörösvár and Csobánka, mostly in Pilisvörösvár with only its northern shore in Csobánka. It was formed by damming the confluence of the Határ-réti-árok and Házi-réti-patak. Its water surface fluctuates between 24.6 and 26 hectares, its perimeter is about 7.2 km, and its bed varies from shallow, hard or muddy margins to depths of 3.5 m near the dam.

The first military survey of Hungary (1780–1784) already shows a dammed open-water lake here, with a building and the abbreviation "w.h." for a tavern on its northern shore. The second survey marks wet ground and the name "Vörösvárer Teich", and the third repeats it. The present reservoir was built before the regime change by Budapest and Pest County companies; from the 1990s the Rozmaring cooperative took over much of the shared property, leading to long lawsuits over ownership and even fishing rights.

The Háziréti reservoir takes its name from the two streams that feed it: the Házi-réti-patak and Határ-réti-patak. It has become a gathering place for local anglers and nature seekers who value spending quiet time by the water away from urban crowds.

The site is accessible via Highway 10 with a large free parking lot at the southeastern corner, just steps from the water. Visitors can drive or take buses from Árpád híd or Pilisborosjenő that stop within 500 meters to 2 kilometers of the reservoir depending on the route.

The reservoir record catfish weighed 69.20 kg, caught in summer 2016; at least five catfish over 40 kg have been landed here. Carp over 5 kg, amur over 7 kg and pike over 70 cm must be released immediately after weighing and photographing. Fishing is allowed from the bank, from piers and from club boats, but spinning is banned across the whole water.