Proposed nutrient criteria for water supply lakes and reservoirs

Callinan, Clifford W.; Hassett, John P.; Hyde, James B.; Entringer, Ronald A.; Klake, Raphael K.

doi:10.5942/jawwa.2013.105.0034

Cited by 9 publications

(11 citation statements)

References 24 publications

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“…Few studies have examined the correlation between chlorophyll a in source waters and DBP formation in finished drinking water. Previous studies have shown a correlation (Callinan et al, 2013; Saunders et al, 2015), while Kralles et al (2020) report a lack of correlation between chlorophyll a and several DBPs, including TTHMs. Differences in research approaches between this case study and previous studies make direct comparisons difficult.…”

Section: Resultsmentioning

confidence: 93%

“…Differences in research approaches between this case study and previous studies make direct comparisons difficult. For example, the use of different DBP formation potential protocols in Callinan et al (2013) and Kralles et al (2020) may account for the conflicting observations. Furthermore, the operation of advanced removal technologies at the utilities in this case study could negate the impact of the increased AOM on DBP formation.…”

Section: Resultsmentioning

confidence: 99%

“…One study that investigated HAB‐impacted lakes under uniform formation conditions did not observe a correlation between chlorophyll a and DBP yields (Kralles et al, 2020). Other field and in‐plant research studies examining source water levels of chlorophyll a and specific ultraviolet absorbance values (<2 L/mg‐m) show significant positive correlations with TTHM and HAA5 concentrations in DBP formation‐potential tests (Callinan et al, 2013), sampled finished water (Carpenter et al, 2013), and Safe Drinking Water Information System compliance data (Saunders et al, 2015). These associations have been used to support proposals for establishing source water chlorophyll a ambient water quality standards of 4–6 μg/L and 5 μg/L in New York and Colorado, respectively, in an effort to prevent DBP violations in finished drinking water (Callinan et al, 2013; CDHE, 2016; Saunders et al, 2015).…”

Section: Introductionmentioning

confidence: 98%

“…This study explored the relationship between the occurrence of HABs in source water, treatment approaches, and TTHM and HAA5 formation at five drinking water utilities with a history of HAB events in their source waters. Laboratory studies have demonstrated the DBP formation potential of AOM, including cyanobacteria (Chu et al, 2017; Fang et al, 2010a, 2010b; Goslan et al, 2017; Graham et al, 1998; Qi et al, 2016; Zhou et al, 2015), but fewer studies exist showing the full‐scale impacts of HAB events on regulated DBP formation (Callinan et al, 2013; Carpenter et al, 2013; Saunders et al, 2015). This study was designed with the intention of filling this research gap by investigating the relationship between source water HAB events and DBP formation in full‐scale treatment systems.…”

Section: Introductionmentioning

confidence: 99%

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Effects of harmful algal blooms on regulated disinfection byproducts: Findings from five utility case studies

et al. 2021

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During a cyanobacterial harmful algal bloom (HAB) event, drinking water treatment systems face the challenge of balancing acute and chronic health risks by treating the potentially toxin‐producing HAB and simultaneously managing for disinfection byproduct (DBP) formation. To explore the relationship between HAB events and DBP formation, a unique full‐scale study, including paired source water and finished water monitoring, was conducted at five drinking water utilities with HAB‐impacted source waters. Results confirm bench‐scale findings that HAB events in source water contribute to increases in DBP precursors. However, unlike results from laboratory studies, source water HAB‐related parameters and finished water DBPs were not consistently correlated at the five study utilities. These different outcomes suggest regulated DBP formation in utilities with HAB‐impacted source water is complex and influenced by a variety of site‐specific conditions, including source water conditions and data available for operational decision‐making, timing of treatment adjustments, and key operational choices.

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Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Effects of harmful algal blooms on regulated disinfection byproducts: Findings from five utility case studies

et al. 2021

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“…Greater organic C in water can also lead to increased disinfection byproducts (DBP) following water treatment. Chlorophyll‐ a >4 to 6 μg L −1 has been shown to increase DBP to unacceptable levels in water distribution systems (Callinan et al, 2013). Although these water quality outcomes directly affect human health, source water standards are needed that link back to basic nutrient concentrations in waterbodies to inform watershed management (Jarvie et al, 2013; Sharpley et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Implementing Effects-Based Water Quality Criteria for Eutrophication in Beaver Lake, Arkansas: Linking Standard Development and Assessment Methodology

Scott

Haggard

2015

J. Environ. Qual.

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To address water quality standards needed to prevent accelerated eutrophication, many states in the United States have developed effects-based standards related to nutrients. In many cases, this has resulted in specific standards for Secchi transparency (ST) and phytoplankton biomass measured as sestonic chlorophyll (chl-). The state of Arkansas recently adopted its first effects-based water quality criteria for Beaver Lake in northwestern Arkansas, which was a growing-season geometric mean chl- <8 μg L and an annual average ST >1.1 m. However, the adopted standard did not have a predefined assessment methodology that outlined the frequency and duration of potential exceedances. This study used hydrologic frequency analysis to estimate the risk of exceeding these water quality standards using measured and modeled data from Beaver Lake from 2001 to 2014. Beaver Lake conformed to common models in reservoir limnology in that ST was least and chl- was greatest in the river-reservoir transition zone and decreased in the downstream direction toward the dam. Greater chl- and lesser ST was clearly related to total phosphorus concentrations along this gradient. Thus, the risk of exceeding the water quality criteria decreased in a downstream direction. There were substantial differences in the probability of exceeding the adopted water quality criteria based on both spatial and temporal variation in the potential assessment periods. Based on the way the standard was developed and the risk of exceeding these standards derived from data collected before the standards were in place, we recommend that a minimum of half of the years assessed be necessary to result in a water quality violation. A number of other assessment considerations are presented that could provide flexibility to regulatory agencies in assessing water quality standards.

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Patterns and impacts of cyanobacteria in a deep, thermally stratified, oligotrophic lake

et al. 2023

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Cyanobacterial blooms are a concern in oligotrophic lakes because these systems are often used for multiple purposes (i.e., recreation and public water supplies). Monitoring cyanobacteria impacts is challenging in such cases because of low and heterogeneous concentrations over time, space, and depth. Canandaigua Lake (New York State) is oligotrophic, but has been impacted by blooms since at least the early 2000s, with limited quantification. This study integrated data from established shoreline surveillance and inter-agency monitoring programs to connect lake processes and evaluate use impacts. Surveys

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Proposed nutrient criteria for water supply lakes and reservoirs

Cited by 9 publications

References 24 publications

Effects of harmful algal blooms on regulated disinfection byproducts: Findings from five utility case studies

Effects of harmful algal blooms on regulated disinfection byproducts: Findings from five utility case studies

Implementing Effects-Based Water Quality Criteria for Eutrophication in Beaver Lake, Arkansas: Linking Standard Development and Assessment Methodology

Patterns and impacts of cyanobacteria in a deep, thermally stratified, oligotrophic lake

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