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Drinking Water Testing

ORELAP accredited drinking water testing for public and private water systems. Field testing and pick-up available. Please contact us for scheduling. Rush turnaround available upon request.

Well Testing

State regulated testing for real estate transactions on properties using well water. For instruction on sampling and to submit samples for testing your drinking watere samples, click here.

  • Arsenic and Lead by ICPMS EPA 200.8
  • Nitrate and Nitrite by Ion Chromatography EPA 300.0
  • Total Coliform/Escherichia coli (E. coli)– Absent/Present SM 9223-B


ORELAP accredited organics testing.

  • Volatile organic compounds (VOC) by GC/MS. EPA 524.2
  • Chlorination by-products analyses in drinking water for TTHM/HAA5 by GCMS and GC/ECD EPA 524.2 and SM 6251-B.


ORELAP accredited microbiology testing

  • Total Coliform/Escherichia coli (E. coli)– Absent/Present SM 9223-B
  • Total Coliform/Escherichia coli (E. coli)– MPN by SM9223-B-Quanti-tray
  • Heterotrophic Plate Count (HPC) – Standard Plate Count SM-9215
  • Legionella – Legiolert: Legionella pneumophilia in Water

Metals in Water Testing Options

Older pipes, fixtures, and solder can degrade over time causing heavy metals to leach into your water supply. Columbia Laboratories Inc. is accredited for metals testing by the following methods;

  • Lead and Copper – ICPMS by EPA 200.8
  • Metals Scan (Ag, Al, As, Ba, B, Be, Cd, Cr, Co, Cu, Fe, Hg, Mn, Mo, Ni, Pb, Sb, Se, Tl, V, Zn) – ICP/MS  by EPA 200.8
  • Minerals (Ca, Fe, K, Mg, Na) – ICP-OES by EPA 200.7

Additional Drinking Water testing offered

  • Anions (chloride, nitrate, nitrite, fluoride, sulfate, and ortho-phosphate) by EPA 300.0
  • Nitrate/Nitrite by 353.2
  • Alkalinity – SM 2330-B
  • Color – SM 2120-B
  • Conductivity – SM 2510-B
  • Cyanide – SM 4500 CN C/E
  • Hardness – SM 2340-B
  • pH – SM 4500 H+ B
  • Residual Chlorine, Total Chlorine, and Chloramine – SM 4500-Cl G
  • Turbidity – SM 2130-B
  • Volatile Solids by SM2540-G

Wastewater And Stormwater Testing

ORELAP accredited for most analysis within Oregon and Washington storm water permits, as well as most National Pollutant Discharge Elimination System (NPDES) permits. Field testing and pick-up available. Please call or email for scheduling. Rush turnaround available upon request.

ORELAP Accredited Test Methods Wastewater/Storm water

  • ICP-MS metals by EPA 200.8
  • ICP-OES metals/minerals by EPA 200.7
  • Total Mercury by EPA 245.1
  • Anions by EPA 300.0 (nitrate, nitrite, fluoride, chloride, ortho-phosphate, sulfate)
  • Nitrate/Nitrite by 353.2
  • Oil and Grease by EPA 1664A
  • Total Suspended Solids by SM 2540-D
  • Total Dissolved Solids by SM 2540-C
  • Total Solids by SM 2540-B
  • Biochemical Oxygen Demand and Carbonaceous Biochemical Oxygen Demand by SM 5210-B
  • Chemical Oxygen Demand by EPA 410.4
  • Total Phosphorus by EPA 365.1
  • Total Kjeldahl Nitrogen by EPA 351.2
  • Ammonia Nitrogen by EPA 350.1
  • Alkalinity by SM 2320-B
  • Conductivity by SM 2510-B
  • pH by SM 4500 H+ B
  • Turbidity by SM 2130-B


  • Total Coliform/E. Coli Count SM 9223-B Qty
  • Fecal Coliform SM 9222-D
  • Standard Plate Count SM 9215-B

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