Water Analysis

Con-Test Analytical Laboratory has been providing water analysis services for decades. We are proud of the contributions we make to keep our earth clean and healthy. Most recently, there’s been concern surrounding lead in drinking water, and we’ve been at the forefront of the investigation of this human health concern.

Con-Test offers a broad range of general chemistry, organic and metals tests for drinking water, surface water, groundwater, and wastewater.  Our analysts have the skills and knowledge to provide comprehensive solutions to your water projects and turnaround time (TAT) to meet your needs.

Some of our most popular water analyses include:

  • Volatile Organics
  • Semi-volatile Organics
  • PCBs, Pesticides, and Herbicides
  • Petroleum Analysis including ETPH, EPH, VPH, TPH and Fingerprinting
  • Metals including mercury by ICP, ICP/MS and FIMS
  • Hexavalent (+6) and Trivalent (+3) Chromium
  • Ferrous (+2) and Ferric (+3) Iron
  • Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD)
  • Oil and Grease
  • Odor and pH
  • Microbiology through Total and Fecal Coliform
  • Sulfate, Sulfide and Cyanide
  • Ammonia, Nitrogen, Nitrate, Nitrite and TKN
  • Fluoride
  • Total Dissolved, Suspended and Settable Solids
  • Total Organic Carbon
  • Dissolved Gasses by RSK175 for Ethane, Ethene and Methane
  • And More!

Bacteriological Analysis

Method Number

Coliform, Total SM 9222B
  SM 9223 (Colisure)
Coliform, Fecal SM 9222D
Enterococci SM 9223 (Enterolert)

Inorganic Mineral Analyses

Method Number

Alkalinity (Titrimetric) SM 2320 B
Chloride (Argentometric) SM 4500-Cl B
Chloride (IC) EPA 300.0
Chromium, Hexavalent SM 3500-Cr B
(Manual, Colorimetric) SW-846 7196 A
Conductivity (Wheatstone Bridge) SM 2510 B
Dissolved Oxygen (Membrane electrode method) SM 4500-O G
Ferrous Iron (Spectrophotometric) SM 3500-Fe D
Fluoride (Ion Selective Electrode) SM 4500-F C
Fluoride (IC) EPA 300.0
Hardness (Titrimetric, EDTA) SM 2340 C
pH (Electrode) SM 4500-H B
  SW-846 9040 B
Solids, Total SM 2540 B
Solids, Total Dissolved SM 2540 C
Solids, Total Suspended SM 2540 D
Solids, Settleable SM 2540 F
Sulfate (Turbidimetric) ASTM D516
Sulfate (IC) EPA 300.0
Sulfide (Iodometric Back Titration) SM 4500-S2 F

Nutrient Analyses

Method Number

Ammonia-N SM 4500-NH3 C -titration
Nitrite-N (Manual Spectrophotometer) SM 4500-NO2 B
Nitrite-N (IC) EPA 300.0
Nitrite-N (Lachat auto-analyzer) SM 4500-NO3 F
Nitrate-N (IC) EPA 300.0
Nitrate/Nitrite (Lachat Auto-analyzer) SM 4500-NO3 F
Nitrate-N (Cadmium Reduction Lachat) (NO3 + NO2) – NO2 SM 4500-NO3 F
Total Kjeldahl Nitrogen SM 4500 NH3-C
(Organic N) (Titrimetric) Prep SM 4500-Norg B, C
MBAS (Surfactants) (Colorimetric) SM 5540 C
Phosphate, Ortho (Colorimetric) SM 4500-P E
Phosphate, Ortho (IC) EPA 300.0
Phosphate, Total (Colorimetric) SM 4500-P E
Bromide (IC) EPA 300.0

Demand Analyses

Method Number

BOD (5 day) (Dissolved Oxygen Consumption) SM 5210 B
CBOD (5 day) (Carbonaceous DO Consumption) SM 5210 B
COD (Colorimetric) EPA 410.4
Chlorine, Total Residual (Colorimetric) SM 4500-Cl G
TOC (Total Organic Carbon) SM 5310 B

Physical Analyses

Method Number

Color (Visual Comparison) SM 2120 B
Odor (Threshold Odor) SM 2150 B
Turbidity (Nephelometric) EPA 180.1

In Organics

Method Number

Oil and Grease (FOG) (Hexane Extraction) SW-846 1664B
Phenols (Colorimetric) EPA 420.1
Cyanide, Total (Manual Spectrophotometer) SM 4500-CN E
  SW-846 9014
Physiologically Available Cyanide (Manual Spec.) SW-846 9014

Volatile Organics

Method Number

Purgeable Aromatics (GC) EPA 602
Purgeables (GC/MS) EPA 624
Drinking Water Purgeables (GC/MS) EPA 524.2
Drinking Water PFAA's (LC/MS/MS) EPA 537
  ISO 25101

Semi-Volatile Organics

Method Number

Base/Neutrals & Acids EPA 625
Priority Pollutants Pesticides/PCB’s EPA 608
CT Extractable Petroleum Hydrocarbons CT ETPH
MA Volatile Petroleum Hydrocarbons MA VPH
MA Extractable Petroleum Hydrocarbons  MA EPH

Waters, soils and other materials may be analyzed for metals by Inductively Coupled Argon Plasma – Atomic Emission Spectroscopy (ICP) and/or Inductively Coupled Plasma Mass Spectrometry (ICP-MS). Non-aqueous samples are generally treated as a solid waste and SW-846 methods are applied. 



Drinking Water

Non-Aqueous (Solids/Wastes)

Aluminum (Al) 200.7/6010C/D 200.7 6010C/D
Antimony (Sb) 200.7/6010C/D 200.8 6010C/D
Arsenic (As) 200.7/6010C/D 200.8 6010C/D
Barium (Ba) 200.7/6010C/D 200.7/200.8 6010C/D
Beryllium (Be) 200.7/6010C/D 200.8 6010C/D
Boron (B) 200.7/6010C/D 200.7 6010C/D
Cadmium (Cd) 200.7/6010C/D 200.7/200.8 6010C/D
Calcium (Ca) 200.7/6010C/D 200.7 6010C/D
Chromium (Cr) 200.7/6010C/D 200.7/200.8 6010C/D
Cobalt (Co) 200.7/6010C/D 200.7/200.8 6010C/D
Copper (Cu) 200.7/6010C/D 200.7/200.8 6010C/D
Iron (Fe) 200.7/6010C/D 200.7 6010C/D
Lead (Pb) 200.7/6010C/D 200.8 6010C/D
Magnesium (Mg) 200.7/6010C/D 200.7 6010C/D
Manganese (Mn) 200.7/6010C/D 200.7/200.8 6010C/D
Mercury (Hg) 245.1/7470A 245.1 7471B
Molybdenum 200.7/6010C/D 200.7/200.8 6010C/D
Nickel (Ni) 200.7/6010C/D 200.7/200.8 6010C/D
Potassium (K) 200.7/6010C/D 200.7 6010C/D
Selenium (Se) 200.7/6010C/D 200.8 6010C/D
Silver (Ag) 200.7/6010C/D 200.7/200.8 6010C/D
Sodium (Na) 200.7/6010C/D 200.7 6010C/D
Thallium (Tl) 200.7/6010C/D 200.8 6010C/D
Tin (Sn) 200.7/6010C/D 200.7 6010C/D
Vanadium (V) 200.7/6010C/D 200.7/200.8 6010C/D
Zinc (Zn) 200.7/6010C/D 200.7/200.8 6010C/D

Note: EPA Method 200.7 and SW-846 Method 6010C/D are “Inductively Coupled Plasma – Atomic Emission Spectroscopy” (ICP) methods.

Note: EPA Method 200.8 and SW-846 Method 6020A?B are “Inductively Coupled Plasma Mass Spectrometry” (ICP-MS) methods.