This dataset includes pesticide-concentration results for 32 discrete water samples that were collected on the islands of Kauai and Oahu between November 21, 2016 and April 29, 2017. The water samples were collected for the Pesticide-Monitoring Program of Surface Water in the State of Hawaii. This dataset consists of five files: a summary file, a sample-list file, two results files, and this metadata file. The summary file (Summary_of_pesticide_results_for_discrete_samples_Hawaii_Nov2016_Apr2017.pdf) includes maps and a table of the sample sites, graphs that summarize the most frequently detected pesticide compounds in the water samples, and tables that summarize comparisons between (1) concentrations of detected pesticide compounds and (2) water-quality standards, criteria, and benchmarks. The sample-list file [List_of_discrete_samples_Hawaii_Nov2016_Apr2017.csv] contains a list of 32 samples and attributes that describe where, when, and how each sample was collected. The first results file [All_pesticide_results_(ngL)_for_discrete_samples_Hawaii_Nov2016_Apr2017.csv] contains all pesticide-concentration results (in nanograms per liter) for all 32 samples, and these results were obtained from the U.S. Geological Survey (USGS) National Water Information System (NWIS) database (https://doi.org/10.5066/F7P55KJN). The second results file [Pesticide_results_(ngL)_for_detections_only_in_discrete_samples_Hawaii_Nov2016_Apr2017.csv] is a subset of the first results file, and contains pesticides-concentration results for pesticide-compound detections only. For context, both results files include, for each pesticide result, the maximum contaminant level in drinking water, the lowest human-health benchmark considered, and the lowest aquatic-life benchmark considered, if available. This dataset contains summaries and results that were derived from data retrieved from NWIS on January 18, 2018. The data that were retrieved from NWIS are subject to revision, so users should check NWIS (https://doi.org/10.5066/F7P55KJN) for the most current verion of the data.