The Open Geospatial Consortium (OGC) membership has approved the OGC WaterML 2.0 Water Quality (WaterML-WQ) document for publication as an OGC Best Practice. 
This OGC Best Practice describes how to configure XML documents for single and time series water quality measurements. In addition to stating the rules for using the OGC Observations and Measurements (O&M) and WaterML 2.0 encoding standards, including appropriate content ontologies, this Best Practice provides guidance through numerous examples. This document is intended to complement the OGC WaterML 2.0 standard as part of a suite of standards for water observation data.
The OGC WaterML-Water Quality Best Practice is available at http://docs.opengeospatial.org/bp/14-003/14-003.html.
The OGC is an international geospatial standards consortium of more than 500 companies, government agencies, research organizations, and universities participating in a consensus process to develop publicly available standards. OGC standards support interoperable solutions that “geo-enable” the Web, wireless and location-based services, and mainstream IT. Visit the OGC website at http://www.opengeospatial.org/.