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Analytical Services

EARDC Analytical Laboratory Services

The Edwards Aquifer Research and Data Center (EARDC) has been providing water analysis services since 1979. Samples are analyzed from wells, springs, rivers, municipalities, and wastewater treatment facilities for a variety of chemical and biological constituents. The EARDC laboratory is NELAP accreditited.

Quality Assurance and Quality Control

EARDC’s commitment is to meet our client’s requirements by providing a high caliber of environmental and laboratory services. The goal of the EARDC laboratory is to generate an error free environment. The quality assurance management system at EARDC stresses training and planning which yields increased personal performance, improved laboratory management and the prevention of errors. The EARDC Quality Assurance program ensures that data produced is scientifically sound, legally defensible, and of known documentable and verifiable quality.

nelap certificate

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    • Alkalinity, bicarbonate
    • Alkalinity, total
    • Biochemical Oxygen Demand (BOD)
    • Carnbaneous BOD
    • Total Organic Carbon (TOC)
    • Chloride
    • Chlorine, total
    • Chlorine, free
    • Chemical Oxygen Demand (COD)
    • Conductivity
    • Nitrogen, Kjeldahl
    • Nitrogen, Nitrate
    • Nitrogen, Nitrite
    • Oil and Grease (FOG)
    • Phosphate, ortho
    • Phosphate Total
    • Total Dissolved Solids (TDS)
    • Total Solids (TS)
    • Total Suspended Solids (TSS)
    • Volatile Suspended Solids (VSS)
    • Sulfate
    • Silica
    • PH
    • Dissolved Oxygen (DO)
    • Turbidity
    • Cyanide, total
    • Fluoride
    • Hardness, total
    • Hardness, Calcium Carbonate
    • Nitrogen, Ammonia
    • Coliform, Total (MF)
    • Coliform, Total (Colilert)
    • Coliform, Fecal (MF)
    • Streptococci, Fecal (MF)
    • Microscopic Particulate Analysis
    • Total Dissolved Solids (TDS)
    • Alkalinity
    • Hardness
    • Calcium
    • Iron
    • Magnesium
    • Manganese
    • Sodium
    • Sulfate
    • Chloride
    • Fluoride
    • Nitrogen, nitrate
    • Total Coliform (Colilert)
    • Aluminum (GFAA)
    • Antimony (GFAA)
    • Arsenic (GFAA)
    • Barium (GFAA)
    • Beryllium (GFAA)
    • Boron
    • Cadmimum (GFAA)
    • Calcium Chromium
    • Chromium (hexavalent)
    • Copper
    • Gold (GFAA)
    • Iron
    • Lead (GFAA)
    • Magnesium
    • Manganese (GFAA)
    • Mercury (cold vapor)
    • Nickel (GFAA)
    • Potassium
    • Selenium (GFAA)
    • Silver (GFAA)
    • Sodium
    • Strontium
    • Thallium (GFAA)
    • Zinc  
    • Water Matrix
    • Semi-volatiles
    • Phenoxy Herbicides (17) EPA 515.2 GC/MS
    • Organochlorine Pesticides EPA 525.1 GC/MS
    • Organophosphate Pesticides EPA 525.1 GC/MS
    • Total PCB’s (congeners) EPA 680 GC/MS
    • Base Neutral Extractables EPA 525.1/625 GC/MS
    • Acid Extractables EPA 525.1/625 GC/MS
  •      Volatiles

    • Purgeables (48) EPA 524.2 GC/MS
    • Purgeables (31) EPA 624 GC/MS
    • BTEX (6) EPA 524.2/624 GC/MS
    • BTEX/MTBE (7) EPA 503.1 PID/FID Soil/Sediment Matrix 

         Semi-Volatiles

    • Organochlorine Pesticides (SW-846) 8270A GC/MS
    • Organophosphate Pesticides (SW-846) 8270A GC/MS
    • Total PCB’s (congeners) EPA 680 GC/MS
    • Semi-volatiles (w/OC-pesticides) (SW-846) 8270A GC/MS