This dataset contains E. coli data collected at the Outfall of the Nogales International Wastewater Treatment Plant (NIWTP; SC6, 312724110580501) by U.S. International Boundary and Water Commission (IBWC) personnel. The IBWC collects discrete samples at the Outfall of the NIWTP daily or weekly by dipping a 100 mL sterilized IDEXX bottle in the centroid of flow. Samples are kept chilled and shipped to Turner Laboratories Inc. or Legend Technical Services Inc. Both laboratories use standard method 9223B for E. coli analysis, which uses the Colilert™-24 (Colilert) and Quanti-Tray®/2000 (Quanti-Tray) system. The holding time specified for wastewater is 30 hours. The dataset is a compilation of multiple paper records. E.coli concentrations reported as 0 most probable number (MPN) per100 mL were qualified as less than the 1 MPN/100mL specified by the Colilert test. The datasest includes E. coli concentration data for the period of June 01, 2009 to March 31, 2015.

This dataset contains effluent-discharge data, in cubic feet per second, for the Santa Cruz location at the Outfall of the Nogales International Wastewater Treatment Plant (SC6, 312724110580501). The data were collected by personnel at the U.S. International Boundary and Water Commission using a pipeline flow meter. The data were recorded at a 30 minute interval for the period of 2012 to 2014 and a 15-minute for the period January 1, 2016 to October 31, 2016. Data were checked for erroneous data and were deleted from the record. The data were reported to USGS for the period of Water Year 2012–2016. Data are missing from the record for the period of July 7, 2014 to August 30, 2014 and November 6, 2014 through December 31, 2015.

This dataset contains effluent-discharge data, in cubic feet per second, for the Santa Cruz location at the Outfall of the Nogales International Wastewater Treatment Plant (SC6, 312724110580501). The data were collected by personnel at the U.S. International Boundary and Water Commission using a pipeline flow meter. The data were recorded at a 30 minute interval for the period of 2012 to 2014 and a 15-minute for the period January 1, 2016 to October 31, 2016. Data were checked for erroneous data and were deleted from the record. The data were reported to USGS for the period of Water Year 2012–2016. Data are missing from the record for the period of July 7, 2014 to August 30, 2014 and November 6, 2014 through December 31, 2015.

Measurements of E. coli collected at Coalinga Canal. Currently collected twice a year, previously collected quarterly. Access further information for this data set by contacting Bureau of Reclamation, California-Great Basin Region, Environmental Affairs Division (CGB-157). See ResultAttributes for STAFF_GAUGE, SMPL_DEPTH, SMPL_CATEGORY_NAME, METHOD_CODE, RESULT_RL, RESULT_RL-UNIT_STD_NAME, RESULT_MDL, RESULT_MDL-UNIT_STD_NAME, USBR_QA_SUBTYPE_NAME, USBR_QULFR_DESCRIPTION. STAFF_GAUGE is the water height in decimal feet measured by gauge (e.g., 15.2). SMPL_DEPTH is the vertical depth at which sample is collected (e.g., 0 - 15 cm). For water samples: depth below water/air interface. For sediment and soil samples: depth below water/solid or air/solid interface. SMPL_CATEGORY_NAME is the category type of sample (e.g., Composite). METHOD_CODE is the name of method used to obtain result (e.g., EPA 200.8). RESULT_RL is the result reporting limit (accounting for dilution) (e.g., 0.02). RESULT_RL-UNIT_STD_NAME is the unit associated with RESULT_RL (e.g., mg/L). RESULT_MDL is the result method detection limit (e.g., 0.007). RESULT_MDL-UNIT_STD_NAME is the unit associated with RESULT_MDL (e.g., mg/L). USBR_QA_SUBTYPE_NAME is the quality control type of the sample (e.g., USBR_BLANK_SPIKE). USBR_QULFR_DESCRIPTION is the quality assurance description (if any) (e.g., Result may have a high bias.).

This dataset contains stream-stage data for the Santa Cruz River near Nogales International Wastewater Treatment Plant Upstream of Railroad Trestle (SC5). The pressure transducer was mounted to a metal post secured in the stream near the right bank. The data were recorded using non-vented Solinst Levelogger for the period of February 12, 2015 to December 31, 2016. The data were logged continuously at a 15-minute interval and manually downloaded. Data were corrected with the atmospheric pressure collected from a Solinst Barologger located at SC14 and checked for erroneous data.

,A regional dataset containing E. coli monitoring sampling results collected along the Potomac and Anacostia Rivers, in response to the January 2026 Potomac Interceptor Collapse. Each data provider retains responsibility for its own data and submits to this compilation dataset voluntarily. Check the Source field to identify the data provider:,Contact individual data providers to learn more about their data (i.e., collection, quality assurance, terms of use, etc.). Questions regarding DC Department of Energy & Environment sampling sites can be directed to pi.data@dc.gov.,

Measurements of E. coli collected at Sacramento River At Freeport. Currently collected twice a year, previously collected quarterly. Access further information for this data set by contacting Bureau of Reclamation, California-Great Basin Region, Environmental Affairs Division (CGB-157). See ResultAttributes for STAFF_GAUGE, SMPL_DEPTH, SMPL_CATEGORY_NAME, METHOD_CODE, RESULT_RL, RESULT_RL-UNIT_STD_NAME, RESULT_MDL, RESULT_MDL-UNIT_STD_NAME, USBR_QA_SUBTYPE_NAME, USBR_QULFR_DESCRIPTION. STAFF_GAUGE is the water height in decimal feet measured by gauge (e.g., 15.2). SMPL_DEPTH is the vertical depth at which sample is collected (e.g., 0 - 15 cm). For water samples: depth below water/air interface. For sediment and soil samples: depth below water/solid or air/solid interface. SMPL_CATEGORY_NAME is the category type of sample (e.g., Composite). METHOD_CODE is the name of method used to obtain result (e.g., EPA 200.8). RESULT_RL is the result reporting limit (accounting for dilution) (e.g., 0.02). RESULT_RL-UNIT_STD_NAME is the unit associated with RESULT_RL (e.g., mg/L). RESULT_MDL is the result method detection limit (e.g., 0.007). RESULT_MDL-UNIT_STD_NAME is the unit associated with RESULT_MDL (e.g., mg/L). USBR_QA_SUBTYPE_NAME is the quality control type of the sample (e.g., USBR_BLANK_SPIKE). USBR_QULFR_DESCRIPTION is the quality assurance description (if any) (e.g., Result may have a high bias.).