Drinking Water Well Information
Whether you own a private well or manage a public water system, these resources provide valuable information on well maintenance, drinking water regulations, and federal standards. They offer guidance on protecting water supplies, understanding water quality concerns, and locating regulatory requirements that may affect sampling and testing.
- Taste and Odor of Drinking Water from Santa Clara County Water District
- EPA information on Private Drinking Water Wells
- Electronic Code of Federal Regulations
Regulatory Agencies
Environmental testing and compliance are guided by federal, state, and regional regulatory agencies. The following resources provide access to California and EPA regulations, permitting information, remediation guidance, and water quality programs that help protect public health and the environment.
- State of California Division of Drinking Water Programs
- Central Valley Regional Water Quality Control Board
- San Francisco Regional Water Quality Control Board (Region 2)
- North Coast Regional Water Quality Control Board
- California Department of Pesticide Regulation (DPR)
- United States Environmental Protection Agency (EPA), Region 9, The Pacific Southwest
- EPA Region 9 Superfund Preliminary Remediation Goals
- EPA 40CFR part 455 Pesticide Regulation pdf documents
- United States Army Corps of Engineers, Hazardous, Toxic and Radioactive Waste Center of Expertise
Test Methods and Regulatory References
Accurate laboratory testing begins with recognized analytical methods and regulatory guidance. These references provide access to EPA-approved testing methods, water quality standards, contaminant information, and technical guidance commonly used by environmental professionals and accredited laboratories.
- EPA SW-846 Methods
- EPA 40CFR part 136 online (Clean Water Act Approved Methods)
- EPA Water Quality Standards Handbook, Second Edition(1994) pdf
- EPA Topics: Endocrine Disruptors
- EPA Contaminants of Emerging Concern including Pharmaceuticals and Personal Care Products
- EPA Office Of Water
Specific Analytes or Subjects of Interest
Environmental testing often focuses on specific contaminants or specialized areas of study. The resources below provide additional information on common analytes, water quality issues, environmental organizations, and emerging contaminants that may affect groundwater, surface water, drinking water, and wastewater monitoring programs.
Mercury
Mercury is a naturally occurring metal that can become an environmental contaminant through industrial activities and natural processes. These resources discuss mercury research, environmental monitoring, and potential impacts on aquatic ecosystems and human health.
- United States Geological Survey (USGS) Mercury Research Information
- U.S. Dept. of Health and Human Services and EPA: Mercury Levels in Commercial Fish and Shellfish
- Cal-Fed Mercury Project Quality Assurance Oversight (pdf)
Pesticides
Pesticides are routinely monitored in environmental and water quality studies due to their potential impact on groundwater, surface water, and ecosystems. These references provide information on pesticide regulations, monitoring programs, and analytical guidance.
- USGS National Water Quality Assessment, Pesticide National Synthesis Project
- California Department of Pesticide Regulation (DPR)
- Department of Pesticide Regulation (DPR) Surface Water Protocols
Pathogens
Monitoring for microbial contaminants helps protect public health and ensure compliance with water quality standards. These resources provide EPA guidance on pathogens and microbiological criteria used in water quality assessments.
Water Quality Related Organizations
These organizations support environmental science, laboratory professionals, water treatment specialists, and researchers through education, technical resources, industry standards, and professional development opportunities.
- American Water Works Association
- California Water Environment Association
- Northern California Chapter of the Society of Environmental Toxicology and Chemistry
- Society of Environmental Toxicology and Chemistry
- San Francisco Estuary Institute
- Groundwater Resources Association of California
Other Sites You Might Enjoy
Environmental laboratory science relies on sophisticated analytical instrumentation. This educational resource provides an overview of mass spectrometry and its role in modern scientific and environmental analysis.
Pyrethroids Pesticides
Pyrethroid pesticides are commonly used for residential and agricultural pest control but can also affect aquatic environments when carried into waterways through stormwater runoff. These resources explore their environmental impacts and ongoing research into stream pollution.
The following links are to educational sites related to instrument theory and operation. The sites were found useful for CWEA (California Water Environment Association) voluntary lab analyst certification training we provided.
Atomic Absorption Spectrometry
Atomic absorption spectrometry (AAS) is a well-established analytical technique used to measure metals in environmental samples. The following educational resources explain the principles behind atomic absorption, emission spectroscopy, and related analytical methods used in environmental laboratories.
- ACS – A Study of Atomic Absorption Spectroscopy
- Gas Chromatography-Mass Spectroscopy Background
- Table of Elements
ICP-MS
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) is one of the most sensitive analytical techniques available for measuring trace metals in environmental samples. This educational resource explains how ICP-MS works and why it plays an important role in groundwater testing.
Mass Spectrometers
Mass spectrometry is widely used for identifying and quantifying organic compounds, pesticides, petroleum hydrocarbons, and many other environmental contaminants. These resources provide an introduction to different mass analyzer technologies and the science behind modern laboratory instrumentation.
- Summary of the Characteristics of Different Mass Analyzers (pdf)
- How a Mass Spectrometer Works
- Fundamentals of Mass Specs
- ASMS (American Society for Mass Spectrometry) “What is Mass Spectrometry”
Gas chromatography–mass spectrometry (Wiki)
Gas Chromatography
Gas chromatography (GC) is an essential analytical technique for separating and measuring volatile and semi-volatile compounds found in environmental samples. The following resource provides an introduction to the principles of gas chromatography and its applications in laboratory testing.