In the lowlands, springs are quite rare. In the north-eastern Poland, many springs are attributed miraculous properties and water is considered sacred. Due to their cultural and spiritual importance they have survived to present times. Thus, they can be used to study the hydrological and hydrochemical changes in the aquifer. The level of hydrological and hydrochemical changes of the first aquifer in the North Podlasie Lowland has been assessed.

We have studied 25 springs and wells considered holy waters, historically present in the geographical region of the North Podlasie Lowland. The main hydro- and physicio-chemical parameters were measured. Currently, majority of the springs have been transformed into shallow dug wells due to groundwater level lowering; only in few cases (6) did the springs survived as groundwater outflows. Their performance was relatively small; from 0.3 dm³ˑs⁻¹. The remaining objects (19) are different depth wells capturing the first aquifer. The largest lowering of groundwater level, exceeding 3 m, was found in Bielska Plain.

Their waters were characterized by excessive iron concentration, typical for shallow groundwater of the Quaternary aquifer, and increased concentration of biogenic elements associated with agricultural activity and natural processes contribute, therefore using it as a drinking water requires treatment. Elevated concentrations of DOC, nitrogen and phosphorus compounds could have been caused by changes in hydrological conditions in the region, transformation of the a spring niche through housing of the outflow or presence of surrounding buildings. The studied water bodies were of the bicarbonate-calcium type.

在低地，泉水很少见。在波兰东北部，许多泉水具有神奇的特性，水被认为是神圣的。由于其文化和精神重要性，它们得以幸存至今。因此，它们可用于研究含水层中的水文和水化学变化。已经评估了北波德拉西低地第一含水层的水文和水化学变化水平。

我们研究了25个被认为是圣水的温泉和水井，这些水和水井历史上存在于北波德拉西低地的地理区域中。测量了主要的水和理化参数。目前，由于地下水位降低，大部分温泉已转变为浅挖井。仅在极少数情况下（6）泉水才随着地下水的流出而幸存下来。他们的表现相对较小；从0.3 dm ^{3 -1} s 。其余的物体（19）是捕获第一含水层的不同深度的井。比尔斯卡平原发现最大的地下水位下降超过3 m。

他们的水的特征是铁含量过高，这是第四纪含水层浅层地下水的典型特征，并且与农业活动和自然过程有关的生物元素浓度增加，因此将其用作饮用水需要进行处理。DOC，氮和磷化合物的浓度升高可能是由于该地区的水文条件变化，通过流出的住房或周围建筑物的存在而改变了春季生态位所致。所研究的水体为碳酸氢钙类型。