The water quality of the Hammam-Grouz dam is deteriorating. This deterioration is due to the inputs of pollutants and nutrients from sewage discharges and the use of fertilizers in agriculture. These waters, normally stored to meet growing domestic, industrial, and agricultural needs, are also polluted, and this pollution is increasing over time. The objective of this work is to assess water quality in Hammam-Grouz dam through interpreting some organic parameters analyzed, namely, organic matter (OM), nitrates (NO₃⁻), nitrites (NO₂⁻), ammonium (NH₄⁺), phosphate (PO₄³⁻), dissolved oxygen (DO), biological oxygen demand for 5 days (BOD₅), and chemical oxygen demand (COD). The study also aims at identifying the organic pollution levels of dam waters through referring to the methods of the Organic Pollution Index (OPI) and the Institute of Hygiene and Epidemiology (IHE) for the years 1988, 2006, 2015, 2016, and 2017. The results obtained show that the waters indicate high concentrations in NO₂⁻, PO₄³⁻, NH₄⁺, OM, and COD which exceed the Algerian standards recommended by the National Agency for Hydric Resources (ANRH), and the quality of waters is rather poor with an increase of concentrations recorded during 2017, indicating high organic pollution. According to OPI and IHE methods, the dam waters show an organic pollution levels which evolve from low-moderate to high-very high. Therefore, the waters are unsuitable for further use and thus require immediate intervention and measures to eliminate pollution sources and to reduce some human activities that degrade the quality of the dam waters.

Hammam-Grouz大坝的水质正在恶化。这种恶化是由于污水排放中污染物和养分的输入以及农业中肥料的使用。这些通常存储起来以满足家庭，工业和农业增长需求的水也受到污染，并且这种污染随着时间的推移而增加。这项工作的目的是评估在澡堂-Grouz水质通过解释一些有机参数坝分析，即，有机物（OM），硝酸盐（NO ₃ ^- ），亚硝酸盐（NO ₂ ^- ），铵（NH ₄ ⁺） ，磷酸盐（PO ₄ ³⁻），溶解氧（DO），5天生物需氧量（BOD ₅）和化学需氧量（COD）。该研究还旨在通过参考1988年，2006年，2015年，2016年和2017年的有机污染指数（OPI）和卫生与流行病学研究所（IHE）的方法确定大坝水体的有机污染水平。得到的结果显示，该水域指示高浓度的NO ₂ ^-，PO ₄ ^3-，NH ₄ ⁺，OM和COD超过了美国国家水利资源管理局（ANRH）推荐的阿尔及利亚标准，并且水质相当差，2017年记录的浓度有所增加，表明有机污染严重。根据OPI和IHE方法，大坝水域显示出有机污染水平，从低到高到非常高。因此，这些水不适合进一步使用，因此需要立即采取干预措施，以消除污染源并减少某些人类活动，这些活动降低了坝水的质量。