Evaluating a Large-Scale Batch Chlorination Method for Household Cistern Water Treatment in the US Virgin Islands

Voth-Gaeddert, Lee E.; Lemley, Mandy; Willford, Ignacio; Brathwaite, Kela; Momberg, Douglas; Schranck, Andrew; Libbey, Stephen

doi:10.1061/(asce)ee.1943-7870.0002059

Cited by 5 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Locally available water treatment options include both POE and POU systems leveraging UV light, filtration, or chlorine, while boiling and bottled water are also options utilized in USVI. , One POE water treatment option hypothesized to be effective at producing potable water for the entire house is the UV treatment system. These systems are installed immediately after the pump and pressure tank, treating the water before it moves to the remaining premise plumbing and taps.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Effectiveness of Point-of-Entry UV Treatment for Cistern Water among Households in the US Virgin Islands

et al. 2023

Self Cite

View full text Add to dashboard Cite

UV water treatment can be a viable option for point-of-entry applications among households utilizing contaminated private water sources, including roof-harvested rainwater. However, limited data is available on UV system effectiveness and costs. Therefore, Love City Strong, an NGO in the US Virgin Islands, piloted a UV access program which included free UV systems with prefiltration along with installation and monthly household visits for up to 12 months, including water quality testing. In addition, a pilot study was conducted to evaluate the effectiveness of UV systems without prefiltration. Results from the UV access program demonstrated that E. coli was not detected in 95.1% of tap or spigot samples (n = 268). Among water quality parameters, household characteristics, and premise plumbing dynamics, no factor was significantly higher among samples with detections of E. coli or total coliforms. Among all samples from the pilot study of UV systems without prefiltration, no E. coli was detected (N = 24). Finally, there was a wide range of costsfirst year and annualwhen comparing different types and configurations of UV systems. Given these data, UV systems may be a viable option for generating potable water; however, clear purchasing and operational guidelines are important to reduce user error.

show abstract

Section: Introductionmentioning

confidence: 99%

Evaluating the Effectiveness of Point-of-Entry UV Treatment for Cistern Water among Households in the US Virgin Islands

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

“…Locally available water treatment options include both POE and POU systems leveraging UV light, filtration, or chlorine, while boiling and bottled water are also options utilized in USVI (Voth-Gaeddert et al, 2022a, 2022b). One POE water treatment option hypothesized to be effective at producing potable water for the entire house is the UV treatment system.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Effectiveness of Point-of-Entry UV Treatment for Cistern Water Among Households in the US Virgin Islands

Voth-Gaeddert

Momberg

Brathwaite

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

UV water treatment can be a viable option for point-of-entry applications among households utilizing private water sources. In the US Virgin Islands (USVI), the primary water source is roof-harvested rainwater, collected in large cisterns and supplied to household taps via a pump. While diversification of water sources provides increased resilience to climate change, literature suggests rainwater catchment systems are at high risk of microbial contamination. One option USVI households have is UV systems. However, limited data is available on UV system effectiveness for USVI installations while these systems can be expensive. Therefore, Love City Strong, a local NGO, piloted a multi-year UV access program which included free UV systems with prefiltration along with installation and monthly household visits for up to 12 months including water quality testing. In addition, due to the significant costs associated with the prefiltration portion of the system, a pilot study was conducted to evaluate the effectiveness of the UV systems without prefiltration.The results from the UV system access program demonstrated thatE. coliwas not detected in 95.2% of tap samples (n=271). Among samples with detectable levels ofE. coliand total coliforms, turbidity was lower compared to samples with non-detections. Field teams reported user error was often identified in association withE. colidetections (e.g., bypass was opened). Among all samples from the pilot study of UV systems without prefiltration, noE. coliwas detected (n=24). Total first-year costs for locally available UV systems with and without prefiltration ranged from $1,059-$1,645 and $927-$1,183, respectively, while operation and maintenance (O& M) costs ranged from $166-$266 and $142-$146, respectively. Given these data, UV systems may be a viable option for generating potable water; however, clear purchasing and installation protocols are needed as well as simple O&M guidelines for households to reduce user error.SynopsisPoint-of-entry UV systems were able to produce water for domestic use with no detectable E. coli in 95.2% of samples among USVI households using roof-harvested rainwater.

show abstract

ZIF-8 incorporated CeO2-CdS quantum dots @ 2D g-C3N4 nanosheets as a staggered type II heterojunction for decolouration of a set of dyes

Gupta,

Kulkarni,

Ahmaruzzaman

2024

Journal of Environmental Chemical Engineering

View full text Add to dashboard Cite

Evaluating a Large-Scale Batch Chlorination Method for Household Cistern Water Treatment in the US Virgin Islands

Cited by 5 publications

References 7 publications

Evaluating the Effectiveness of Point-of-Entry UV Treatment for Cistern Water among Households in the US Virgin Islands

Evaluating the Effectiveness of Point-of-Entry UV Treatment for Cistern Water among Households in the US Virgin Islands

Evaluating the Effectiveness of Point-of-Entry UV Treatment for Cistern Water Among Households in the US Virgin Islands

ZIF-8 incorporated CeO2-CdS quantum dots @ 2D g-C3N4 nanosheets as a staggered type II heterojunction for decolouration of a set of dyes

Contact Info

Product

Resources

About