Autonomous underwater vehicle provides high-resolution observations of water quality and much more. Photo (c) Peter Berrini, HDR, Inc., used by permission.

Noteworthy

National & Regional Science:

• Fact Sheet: Integrated Synoptic Surveys Using an Autonomous Underwater Vehicle and Manned Boats
• Press Release: Decades-old Nitrate Found to Affect Stream Water Quality
• Circular 1383-G: USGS Water Science Strategy – Observing, Understanding, Predicting, and Delivering Water Science to the Nation
• OFR 2013-1054: User's Manual for the National Water Information System of the USGS
• Press Release: New water-quality test for preventing unnecessary beach closures

Local Science Features:

• New Hampshire: Concentrations of Chloride and Sodium in Groundwater in New Hampshire From 1960 Through 2011
• Arkansas:
  • –Press Release: No Contamination from Fayetteville Shale Exploration Found in Sampled Wells
  • –USGS Report: Shallow Groundwater Quality and Geochemistry in the Fayetteville Shale Gas-Production Area, North-Central Arkansas, 2011
  • –Journal Article: Geochemical and isotopic variations in shallow groundwater in areas of the Fayetteville shale development, north-central Arkansas 

Past listings...

Water Quality Data

National Water Information System (NWIS)

NWIS provides current and historical water-quality data.

Today's Water Conditions

Water-Quality Watch provides continuous real-time water-quality measurements.

Water-Quality Web Services

Web services automate the sharing of USGS and USEPA water-quality monitoring data.

For More Data

Additional water-quality data resources are available.

USGS in Your Area

USGS Water Science Centers are located in each state.

National Field Manual for the Collection of Water-Quality Data (TWRI Book 9)

Chapter A3. Cleaning of Equipment for Water Sampling (Version 2.0 April 2004) [2.65 MB PDF]

• Comments/Errata page (See Comments and Errata for updates or the Notes on pages 15 and 53 of the PDF.)
• Citation Information

This report is in pdf format. Download a copy of Adobe Acrobat Reader for free.

Abstract:

Chapter A3 describes procedures for cleaning the equipment used to collect and process samples of surface water and ground water and procedures for assessing the efficacy of the equipment-cleaning process.

Sections of Chapter A3:

Abstract

Introduction

A3. Cleaning of Equipment for Water Sampling

3.1 Supplies for equipment cleaning

3.2 General cleaning procedures

3.3 Specific procedures for cleaning selected types of equipment

3.4 Quality control for equipment-cleaning procedures

Conversion factors and abbreviations

Selected references and documents

Return to Field Manual Table of Contents

Chapter A3 Archive

(replacement text has been incorporated into the original pdf file dated 9/98--see "Comments and Errata")

• Chapter 3 Version 1.2, March 2003 [275KB PDF] (Updates chapter sections 3.2 and 3.3)
• Chapter3 Version 1.1, February 2003 [610KB PDF] (Revisions to methanol statements)
• Original Chapter3, September 1998 [290KB PDF]