Somatic and F+ coliphage methods are under consideration as potential routine surface water quality monitoring tools to identify unsafe levels of fecal pollution in recreational waters. However, little is known about the cooccurrence of these virus-based fecal indicators and host-associated genetic markers used to prioritize key pollution sources for remediation. In this study, paired measurements of cultivated coliphage (somatic and F+) and bacterial (E. coli and enterococci) general fecal indicators and genetic markers indicative of human (HF183/BacR287 and HumM2), ruminant (Rum2Bac), canine (DG3), and avian (GFD) fecal pollution sources were assessed in 365 water samples collected from six Great Lakes Basin beach and river sites over a 15-week recreational season. Water samples were organized into groups based on defined viral and bacterial fecal indicator water quality thresholds and average log₁₀ host-associated genetic marker fecal score ratios were estimated to compare pollutant source inferences based on variable routine water quality monitoring practices. Eligible log₁₀ fecal score ratios ranged from -0.051 (F+ coliphage, GFD) to 2.08 (enterococci, Rum2Bac). Using a fecal score ratio approach, findings suggest that general fecal indicator selection for routine water quality monitoring can influence the interpretation of host-associated genetic marker measurements, in some cases, prioritizing different pollutant sources for remediation. Variable trends were also observed between Great Lake beach and river sites suggesting disparate management practices may be useful for each water type.

体细胞和 F+ 大肠杆菌噬菌体方法正在考虑作为潜在的常规地表水质监测工具，以识别娱乐水域中粪便污染的不安全水平。然而，人们对这些基于病毒的粪便指标和宿主相关遗传标记的共存知之甚少，这些标记用于优先考虑修复的关键污染源。在本研究中，对培养的大肠杆菌噬菌体（体细胞和 F+）和细菌（大肠杆菌和肠球菌）一般粪便指标和指示人类（HF183/BacR287 和 HumM2）、反刍动物（Rum2Bac）、犬（DG3）、在为期 15 周的休闲季节中，对从五大湖盆地的六个海滩和河流地点收集的 365 个水样进行了禽类 (GFD) 粪便污染源的评估。根据定义的病毒和细菌粪便指标水质阈值对水样进行分组，并估计平均 log _{10宿主相关遗传标记粪便评分比，以比较基于可变常规水质监测实践的污染物源推断。}合格的 log ₁₀粪便评分比率范围为 -0.051（F+ 大肠杆菌噬菌体，GFD）至 2.08（肠球菌，Rum2Bac）。使用粪便得分比方法，研究结果表明，用于常规水质监测的一般粪便指标选择可以影响对宿主相关遗传标记测量的解释，在某些情况下，优先考虑不同污染物源进行修复。在大湖海滩和河流地点之间还观察到不同的趋势，这表明不同的管理实践可能对每种水类型都有用。