Denver's Demonstration of Potable Water Reuse: Water Quality and Health Effects Testing

The product water of the Denver (Colorado) Potable Water Reuse Demonstration Plant is compared to national and international standards for drinking water quality and with the high quality of the present drinking water supply. For parameters which cannot be analyzed or quantified, health effects testing is performed on concentrates of the existing and the innovative supplies. In order to determine relative risk, the health effects are assessed using the measures of chronic toxicity, carcinogenicity, and reproductive toxicity. For measurable constituents, the potable reuse product water equals or exceeds the high quality of Denver's existing drinking water. The preliminary results of the health effects testing demonstrate no health effects associated with either water. Potable reuse is shown to be an acceptable alternative water source which should be evaluated with other traditional supplies.

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Evaluation the water quality of the potable water network in Al-Shuala/ Baghdad City

Iraqi Journal of Physics (IJP) ◽

10.30723/ijp.v13i28.249 ◽

2019 ◽

Vol 13 (28) ◽

pp. 116-124

Author(s):

Zainab Bahaa Mohammed

Keyword(s):

Heavy Metals ◽

Water Quality ◽

Drinking Water ◽

Quality Index ◽

Potable Water ◽

Total Hardness ◽

Water Network ◽

Conductivity Water ◽

Total Dissolved Solid

In this research, the water quality of the potable water network inAl-Shuala Baghdad city were evaluated and compare them with theIraqi standards (IQS) for drinking water and World HealthOrganization standards (WHO), then water quality index (WQI) werecalculator: pH, heavy metals (lead, cadmium and iron), chlorides,total hardness, turbidity, dissolved oxygen, total dissolved solid andelectrical conductivity. Water samples are collected weekly duringthe period from February 2015 to April 2015 from ten sites. Resultsshow that the chlorides, total dissolved solid and electricalconductivity less than acceptable limit of standards, but totalhardness and heavy metals in some samples higher than acceptablelimit of standards while the other parameter is good.WQI shows thatresults is excellent and good for drinking for all location and monthsexcept site (2) gave higher value (65.184) in March and site (9) gavehigh value (57.78, 57.23) at March and April indicate that sites ispoor for drinking water.

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About the question of the assessment of the drinking water quality in centralized water systems in the current conditions

Hygiene and Sanitation ◽

10.47470/0016-9900-2020-99-6-563-568 ◽

2020 ◽

Vol 99 (6) ◽

pp. 563-568

Author(s):

Yuliya A. Novikova ◽

K. B. Friedman ◽

V. N. Fedorov ◽

A. A. Kovshov ◽

N. A. Tikhonova ◽

...

Keyword(s):

Water Quality ◽

Drinking Water ◽

Water Supply ◽

Supply System ◽

Drinking Water Quality ◽

Water Supply Systems ◽

High Quality ◽

Supply Systems ◽

The City

Introduction. Regulation of drinking water quality is a very important area of health care and improving the quality of life of the population of the Russian Federation.The aim of this work is the development a model for the assessment of the drinking water quality and calculating the share of the population, including urban, provided with high-quality drinking water from centralized water supply systems, taking into account new methodological approaches to the evaluation of the quality of drinking water using the example of water supply to settlements in the Leningrad Region. Material and methods. The data on the organization of centralized cold water supply systems and monitoring systems for drinking water quality and the results of laboratory studies of drinking water quality in the cities of Volkhov, Svetogorsk, Slantsy, Tosno were studied. Statistical processing of the results was performed, the categories of quality of drinking water supplied to the population were determined, the number of the population provided with high-quality drinking water from the water supply system was calculated in accordance with Guidelines 2.1.4.0143-19.Results. In 2018, 100% of the population was provided with quality drinking water only in the city of Slantsy. In the city of Tosno, this index reached of 83.5%. In the cities of Volkhov and Svetogorsk, drinking water was rated as low-quality. But it is worth noting that in the cities of Volkhov and Slantsy laboratory tests were carried out at 2 points, in the city of Svetogorsk - only at the 1 point, which, given the number of residents, is not enough. For an objective assessment of the state of drinking water and the development of measures aimed at improving its quality, it is necessary to increase the number of monitoring points, as well as to include the results of control and supervision measures and production laboratory control conducted by water supply organizations in the volume of laboratory information.Conclusion. The proposed model allows us to assess the drinking water quality in centralized water supply systems and the proportion of the population, including urban, provided with quality drinking water at the level of the water supply system, settlement, municipal district (urban district), subject of the Russian Federation

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The Evaluation Groundwater Quality in Daqing Oilfield by Using Logging Data

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.955-959.3088 ◽

2014 ◽

Vol 955-959 ◽

pp. 3088-3092

Author(s):

Yu Bo Yang ◽

Zhong Jun Deng

Keyword(s):

Water Quality ◽

Drinking Water ◽

Groundwater Quality ◽

The South ◽

High Quality ◽

Well Location ◽

Sand Body ◽

Resistivity Logging ◽

Better Than

In order to research the groundwater quality of the Taikang Formation in Tertiary in west of Daqing Oilfield, resistivity logging data of 140 wells in the study area were used to analyze the relations between the groundwater quality and sedimentary sand body and buried depth. The south area of Hongweixing well area and the east of Xishuiyuan well area, including Ranghulu, Qianjincun, Dulitun and Nanshuiyuan well area are favorable for high quality groundwater. The shallower buried water quality is better than the deeper buried water quality of the Taikang Formation in Tertiary. The research provides the evidences to evaluate the groundwater quality in west Daqing Oilfield and determine specific well location, improving the efficiency of exploring the underground drinking water.

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Water Quality for Potable Reuse

Water Science & Technology ◽

10.2166/wst.1991.0675 ◽

1991 ◽

Vol 23 (10-12) ◽

pp. 2171-2180 ◽

Cited By ~ 3

Author(s):

William C. Lauer

Keyword(s):

Water Quality ◽

Water Reuse ◽

Potable Water ◽

Treatment Plant ◽

Treated Wastewater ◽

Test Results ◽

Potable Reuse ◽

Extensive Analysis ◽

Animal Feeding ◽

Direct Potable Reuse

Denver's Potable Water Reuse Demonstration Project is designed to examine the feasibility of converting secondary treated wastewater to potable water quality. A 1.0 mgd (44L/s) treatment plant began operation in 1985 and during the first three years many processes were evaluated. Data from the evaluation period was used to select the optimum treatment sequence which is now being used to produce samples for the two-year animal feeding health effects study now underway. Operation in this configuration will continue until early 1991 during which time comprehensive analytical studies will further define the water quality in relation to existing standards and Denver's current potable supply. A decision concerning the full-scale implementation of direct potable reuse will follow extensive analysis of the test results and in-depth economic evaluation.

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Evaluation of Groundwater Quality for Human Consumption and Irrigation in Relation to Arsenic Concentration in Flow Systems in a Semi-Arid Mexican Region

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18158045 ◽

2021 ◽

Vol 18 (15) ◽

pp. 8045

Author(s):

Jennifer Ortiz-Letechipia ◽

Julián González-Trinidad ◽

Hugo Enrique Júnez-Ferreira ◽

Carlos Bautista-Capetillo ◽

Sandra Dávila-Hernández

Keyword(s):

Water Quality ◽

Drinking Water ◽

Water Quality Index ◽

Quality Index ◽

International Standards ◽

Human Consumption ◽

Quality Of Water ◽

Flow Systems ◽

Semi Arid

The supply of drinking water to the population is an important challenge facing humanity, since both surface and underground sources present a great variability of water storage with respect to space and time. This problem is further aggravated in arid and semi-arid areas where rainfall is low and torrential, which makes groundwater the main source of supply; therefore, it is necessary to carry out studies that allow evaluating the evolution of the quantity and quality of water. This study addresses the behavior of groundwater in a semi-arid region, considering the theory of flow systems to identify movement as well as water quality, es determined by a water quality index (WQI), calculated considering arsenic and fluorine. In addition, a quality irrigation classification is used, employing the norms in accordance with international standards and the Mexican Norm, which allows for a comparison. Local, regional, intermediate and mixed flow systems are identified, and the evolution of cations and anions in addition to temperature is examined. It is observed that the drinking water quality index classifies them as excellent in most of the monitored wells (<50), but with a negative evolution. Regarding irrigation, most of the water samples are classified without restriction for the establishment of any type II crop (C2S1) and with restrictions for horticultural crops. It is observed that arsenic had values between 0.49 and 61.40 (µg/L) in 2005, while in 2015 they were between 0.10 and 241.30 (µg/L). In addition, fluoride presented values between 0.00 and 2.6 (mg/L) in 2005, while in 2015 they were between 0.28 and 5.40 (mg/L). The correlations between arsenic and fluorine are noted as well as WQI and SAR. A finding in this research was to include arsenic and fluorine in the calculation of the WQI allowing a better interpretation of the quality of water for both human consumption and for agricultural use to based on this make the best decision to control any harmful effects for the population, in addition to identifying the appropriate purification treatment required to control pollutants. It is concluded that arsenic is an element of utmost importance when considering water quality, so it is necessary to examine its evolution and continue to monitor its levels constantly.

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Water quality of small-scale desalination plants in southwest coastal Bangladesh

Water Science & Technology Water Supply ◽

10.2166/ws.2017.222 ◽

2017 ◽

Vol 18 (5) ◽

pp. 1606-1616 ◽

Cited By ~ 3

Author(s):

Md. Atikul Islam ◽

Md. Ali Akber ◽

Prosun Kumar Ghosh

Keyword(s):

Water Quality ◽

Drinking Water ◽

Water Samples ◽

Small Scale ◽

Feed Water ◽

Safe Drinking Water ◽

Coastal Bangladesh ◽

Product Water ◽

Desalination Plants

Abstract Southwest coastal Bangladesh has an acute scarcity of safe drinking water. Both the government and non-government organizations are now promoting reverse osmosis based small scale desalination plants (SSDPs) to ensure safe drinking water. The aim of this study was to assess the physico-chemical and bacteriological quality of the desalination plants (DPs) installed in southwest coastal Bangladesh. Water samples were collected from the inlet and outlet of 10 DPs. The product water mostly complied with water quality standards. High levels of total dissolved solids (TDS) and electrical conductivity (EC) in feed water were reduced significantly after the treatment, although 10% and 20% of the product water samples respectively did not comply with the WHO drinking water standards for those parameters. Compliance of product water with the WHO and Bangladesh drinking water standards for chloride, bicarbonate and sodium were found in respectively 80%, 90% and 70% of the samples, although their concentrations in all the feed water samples were higher than both of the standards. About one-third of the DPs did not meet the drinking water standard for sodium, which may be an important health concern for the people consuming this water. Apart from one of the DPs, all of them complied with the standard for faecal coliform and Escherichia coli. Results suggest that proper maintenance of the SSDPs is necessary to ensure safe drinking water for the coastal population of southwest Bangladesh.

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