Environmental Testing Services

Drinking Water Analysis by EPA 525.2


EPA 525.2 is used to determine the concentrations of Pesticides and other Semi-volatile Organic Compounds (SVOCs) in drinking water.

Pesticides and SVOCs are synthetic organic compounds controlled in drinking water under the National Primary Drinking Water Regulations.


EPA 525.2 is performed using solid-phase extraction (SPE) and gas chromatography/mass spectrometer (GC/MS) detection.

Holding Time

Samples have a 14-day holding time. Samples not extracted within this period must be discarded and replaced. Extracts may be stored in tightly capped vials at 4°C for up to 30 days.

Container and Preservative

Collect all samples in 1-L amber bottles which contain 50 mg of sodium sulfite. This dechlorinating agent must be added to each sample to avoid the possibility of reactions that may occur between residual chlorine and the target analytes.

Shipping/Transport Instructions

Samples must be chilled to 4°C when collected and maintained at that temperature until extracted. Field samples that will not be received at the laboratory on the day of collection must be packaged for shipment with sufficient ice to ensure that they will arrive at the laboratory with a substantial amount of ice remaining in the cooler.

Analytes and Reporting Limits

Analytes included on our State of Michigan Drinking Water Certification are designated as such.

  Michigan Certified
  Michigan does not offer certification
  Please request additional information on test


Analyte CAS Number Reporting Limit MI Cert
Alachlor 15972-60-8 0.2 μg/L
Aldrin 309-00-2 0.4 μg/L
Atrazine 1912-24-9 0.2 μg/L
Benzo(a)pyrene 50-32-8 0.05 μg/L
Butachlor 23184-66-9 2 μg/L
Chlordane, Technical, as sum 57-74-9 0.2 μg/L
alpha-Chlordane 5103-71-9 0.05 μg/L
gamma-Chlordane 5103-74-2 0.05 μg/L
trans-Nonachlor 39765-80-5 0.05 μg/L
Di(2-ethylhexyl)adipate 103-23-1 0.6 μg/L
Di(2-ethylhexyl)phthalate 117-81-7 0.6 μg/L
Dieldrin 60-57-1 0.5 μg/L
Endrin 72-20-8 0.1 μg/L
Heptachlor 76-44-8 0.05 μg/L
Heptachlor epoxide 1024-57-3 0.1 μg/L
Hexachlorobenzene (HCB) 118-74-1 0.1 μg/L
Hexachlorocyclopentadiene 77-47-4 0.2 μg/L
Lindane (gamma-BHC) 58-89-9 0.05 μg/L
Methoxychlor 72-43-5 0.1 μg/L
Metolachlor 51218-45-2 1 μg/L
Metribuzin 21087-64-9 1 μg/L
PCB Aroclor 1016 12674-11-2 0.1 μg/L
PCB Aroclor 1221 11104-28-2 0.1 μg/L
PCB Aroclor 1232 11141-16-5 0.1 μg/L
PCB Aroclor 1242 53469-21-9 0.1 μg/L
PCB Aroclor 1248 12672-29-6 0.1 μg/L
PCB Aroclor 1254 11097-69-1 0.1 μg/L
PCB Aroclor 1260 11096-82-5 0.1 μg/L
Propachlor 1918-16-7 1 μg/L
Simazine 122-34-9 0.2 μg/L
Toxaphene 8001-35-2 1 μg/L