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 water 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

Additional microbiology test methods for storm water/wastewater

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