Evaluation of water resource preservation areas in the Hydrographical Basin of Andreas Stream, RS, Brazil, using environmental monitoring programs

Klamt, Rodrigo Augusto; Lobo, Eduardo A.; Costa, Adilson Ben da; Delevati, Dionei Minuzzi

doi:10.4136/ambi-agua.2307

Cited by 13 publications

(6 citation statements)

References 6 publications

(9 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To apply WQI in lotic systems in Southern Brazil, Moretto et al (2012) calibrated the weights of the importance of the parameters used in the formulation of the WQI for the Pardo River Basin, applying multivariate analysis techniques. They found a significant agreement between the new calibrated weights and CONAMA Resolution 357/2005, being suitable for use in environmental monitoring programs (e.g., Wiesel et al, 2018;Klamt et al, 2019).…”

Section: Introductionmentioning

confidence: 73%

Development of a Water Quality Index (WQI) for public supply in the Vale do Rio Pardo region, RS, Brazil

Klamt¹,

Lobo²,

Costa³

2021

Rev. ambiente água

Self Cite

View full text Add to dashboard Cite

This research developed a Water Quality Index (WQI) for public supply in the Vale do Rio Pardo Region, RS, Brazil (WQI-VRP), from the database of the 13th Regional Health Coordination, totaling 1175 samples. A filtration process resulted in 285 samples with the variables free residual chlorine, turbidity, apparent color, pH, fluoride, total coliforms and Escherichia coli. For water consumption purposes, the Water Quality Index developed by the Sanitation Company of Goiás, Brazil, was used. A multivariate calibration of the weights of importance of the parameters included in the original index was performed, resulting in the WQI-VRP. Comparing the medians of the two indexes, it was found that there were significant differences (p<0.05), qualifying the WQI-VRP as more restrictive. The results indicated that 89.8% of the samples were classified as non-compliant samples by WQI-VRP, while 10.2% were classified as compliant samples. Of the 285 samples analyzed, 72 samples of chlorine, 12 of total coliform, 5 of E. coli, 2 of color, 200 of fluoride and 26 of pH, were below or above the minimum or maximum values required by Brazilian legislation. The pH and fluoride correspond to the critical variables of the study region, as they were the parameters that showed the greatest increases in relative weights when comparing the original index with the calibrated one. These results confirm the use of the WQI-VRP as an efficient tool to assess the quality of drinking water in Brazilian subtropical and temperate lotic systems.

show abstract

Section: Introductionmentioning

confidence: 73%

Development of a Water Quality Index (WQI) for public supply in the Vale do Rio Pardo region, RS, Brazil

Klamt¹,

Lobo²,

Costa³

2021

Rev. ambiente água

Self Cite

View full text Add to dashboard Cite

show abstract

“…Monitoring and evaluating the quality of surface and groundwater are key factors for the proper management of water resources [ 3 ]. The characterization and analysis of trends in watersheds are essential for various management activities, such as planning, granting, charging, and framing of watercourses [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Risk Assessment in Monitoring of Water Analysis of a Brazilian River

et al. 2022

View full text Add to dashboard Cite

This study aimed to introduce non-parametric tests and guard bands to assess the compliance of some river water properties with Brazilian environmental regulations. Due to the heterogeneity of the measurands pH, Biochemical Oxygen Demand (BOD), manganese molar concentration, and Escherichia coli, which could be wrongly treated as outliers, as well as the non-Gaussian data, robust methods were used to calculate the measurement uncertainty. Next, based on guard bands, the compliance assessment was evaluated using this previous uncertainty information. For these four measurands, partial overlaps between their uncertainties and the specification limit could generate doubts about compliance. The non-parametric approach for calculating the uncertainty connected to the guard bands concept classified pH and BOD as “conform”, with a risk to the consumer of up to 4.0% and 4.9%, respectively; in contrast, manganese molar concentration and Escherichia coli were “not conform”, with a risk to the consumer of up to 25% and 7.4%, respectively. The methodology proposed was satisfactory because it considered the natural heterogeneity of data with non-Gaussian behavior instead of wrongly excluding outliers. In an unprecedented way, two connected statistical approaches shed light on the measurement uncertainty in compliance assessment of water analysis.

show abstract

“…Five classes for water quality were defined: red (very poor), orange (poor), yellow (average), green (good) and blue (excellent) (Kachroud et al, 2019). The NSF WQI was developed to compare the quality of water bodies and monitor temporal or spatial changes in water quality, mainly applied to pollution from domestic sewage and eutrophication processes (Finotti et al, 2015;Klamt et al, 2019). The WQI can also indicate the contribution of industrial effluents, as long as they are of a biodegradable organic nature (CETESB, 2019).…”

Section: Introductionmentioning

confidence: 99%

Drinking water quality indices: a systematic review

Klamt¹,

Costa²,

Gaedke³

et al. 2021

Rev. ambiente água

Self Cite

View full text Add to dashboard Cite

This analysis applied systematic review as a methodology for identifying, analyzing and interpreting data on the use of water quality indices for human consumption. Scientific articles were searched in the “PubMed”, “Scielo”, “ScienceDirect” and “Web of Science" databases, using the keywords “drinking water” and “water quality index”, with a custom interval between 2000 and 2020. The results indicated 82,573 published articles, with 16 of them being selected after a filtering process. The occurrence of 11 water quality indices was verified, including 47 water quality parameters used to assess the quality of drinking water, highlighting that the parameters pH, Nitrate, Turbidity, Chloride and Sulfate were the most used, cited in 10 of the 16 articles selected (62,5%). We suggest that future studies seek to propose regionalized water quality indicators for consumption, in order to consider local aspects in the evaluation process and to determine intervention priorities by health surveillance agencies.

show abstract

Evaluation of water resource preservation areas in the Hydrographical Basin of Andreas Stream, RS, Brazil, using environmental monitoring programs

Cited by 13 publications

References 6 publications

Development of a Water Quality Index (WQI) for public supply in the Vale do Rio Pardo region, RS, Brazil

Development of a Water Quality Index (WQI) for public supply in the Vale do Rio Pardo region, RS, Brazil

Risk Assessment in Monitoring of Water Analysis of a Brazilian River

Drinking water quality indices: a systematic review

Contact Info

Product

Resources

About