General Water Quality Testing
Additional Testing Solutions to Evaluate Water Quality
EST has a long history of evaluating microbiological contaminates in water systems, both potable and non-potable, but other non-microbial chemical contaminates are also important in determining overall water quality. These include general water conditions such as pH, color, turbidity, and hardness or general metallic contaminates, to more complex chemical conditions like Total Dissolved Solids (TDS). EST can now provide our customers with a wide range of chemical analyses that will help to determine which factors could be affecting your total water quality.
General Water Conditions
- Liquid Photometry (Color)
- Turbidity
- Total Alkalinity
- pH
- Total Hardness
- Free Chlorine
- Total Chlorine
Complex Water Quality Screen
- Liquid Photometry (Color)
- Turbidity
- Hydrogen Sulfide
- Copper
- Silver
- Free Chlorine
- Total Chlorine
- Total Hardness
- Nitrates
- Nitrites
- Bromine
- Iron
- Lead
- Nickel
- Sulfite
- Cyanuric Acid
- Carbonate
- Total Alkalinity
- Total pH
Organic Contamination Screen
- TOC – Total Organic Carbon
- Total Organic Carbon (TOC) is the total amount of carbon in organic compounds in pure water and other systems.
- TDS – Total Dissolved Solids
- Total Dissolved Solids (TDS) are all the good and bad elements in your drinking water. These can be organic and inorganic substances such as metals, minerals, anions, cations, or slats dissolved in water. The TDS level is measured in parts per million (PPM) and milligrams per liter (mg/L).
- COD – Chemical Oxygen Demand
- Chemical Oxygen Demand (COD) is a test that measures the amount of oxygen required to chemically oxidize the organic material and inorganic nutrients, such as Ammonia or Nitrate, present in water.
- BOD – Biochemical Oxygen Demand
- Biochemical oxygen demand (also known as BOD or biological oxygen demand) is an analytical parameter representing the amount of dissolved oxygen (DO) consumed by aerobic bacteria growing on the organic material present in a water sample when measured at a specific temperature over a given time period.
- TSS – Total Suspended Solids
- TSS is a water quality parameter used to assess the quality of a specimen of any type of water or water body, ocean water for example, or wastewater after treatment in a wastewater treatment plant.
- Conductivity
- Conductivity measures the ability of a solution to conduct electricity and is influenced by the ionic strength of the solution, the ions present, and the concentration of each. When ions and other dissolved salts are present in the water, they increase the ability to conduct electricity. Distilled water is a poor conductor of electricity because it lacks any dissolved salts that provide the ions to conduct electricity. In application, measuring the changes in conductivity in a river or stream can indicate potential pollution from sources such as agricultural runoff.