含水岩组是指根据水文地质特征（水质、水温、富水性等）划分的水文地质单位，其界线往往与地层界线不吻合。
本文对北京市平原区含水岩组和压缩层进行了划分。
This paper introduces a classification of the aquifers and compressive layers in the Beijing plain area.
天然苏打水主要赋存于上白垩统嫩江组碎屑岩孔隙裂隙承压含水层中。
The natural soda water occurs mainly in the pore-fissure confined aquifer of the clastic rock of Nenjiang group, Upper Cretaceous.
邢台矿区属典型的华北岩溶型石炭—二叠系煤田，下组煤普遍受巨厚奥陶系灰岩强岩溶含水层的威胁。
The Xingtai mining area is a typical North China Permo-Carboniferous karstic type coalfield, its lower coal group is generally under threat from the thick Ordovician limestone strong karstic aquifer.
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