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Document ID ca-gcdwqgtd-2015-04-15-7 Title Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Toluene, Ethylbenzene and the Xylenes URL https://www.canada.ca/en/health-canada/services/publications/healthy-living/guidelines-canadian-drinking-water-quality-toluene-ethylbenzene-xylenes/guidelines-canadian-drinking-water-quality-guideline-technical-document-toluene-ethylbenzene-xylenes-page-7.html Jurisdiction /ca Subdomain(s) Drinking water, Water quality Language en Status completed Analyzed at 2026-03-18 14:04:30.830029+00:00 Relevance Describes approved analytical methods and detection limits for TEX in water.
2 Qualitative 31 Quantitative 8 Definitions

Q Qualitative Requirements (2)

Req ID Category Intent Legal Status Name Subdomain(s) Context Conditions Confidence
#Q001monitoringoperationalguidanceStandard Methods for TEX Analysisdrinking waterIn addition, two equivalent standard methods, SM 6200B and SM 6200C, can be used for the analysis of toluene, ethylbenzene and xylenes in drinking water.high
#Q002reportingreportingmandatoryXylene Isomeric Pair Reportingdrinking waterIf two of the three xylene isomers cannot be resolved (separated) on the capillary column, the isomers are identified as an isomeric pair (U.S. EPA, 1995d).Applies if two of the three xylene isomers cannot be resolved (separated) on the capillary columnmedium

P Quantitative Requirements (31)

Req ID Category Intent Legal Status Name Subdomain(s) Limit Type Limit Value Context Conditions Confidence
#P001operationalreportingguidelineToluenedrinking waterunknown0.005 mg/Lpractical quantitation levels (PQLs) for toluene, ethylbenzene and total xylenes are set individually at 0.005 mg/LU.S. EPA practical quantitation levelhigh
#P002operationalreportingguidelineEthylbenzenedrinking waterunknown0.005 mg/Lpractical quantitation levels (PQLs) for toluene, ethylbenzene and total xylenes are set individually at 0.005 mg/LU.S. EPA practical quantitation levelhigh
#P003operationalreportingguidelinetotal xylenesdrinking waterunknown0.005 mg/Lpractical quantitation levels (PQLs) for toluene, ethylbenzene and total xylenes are set individually at 0.005 mg/LU.S. EPA practical quantitation levelhigh
#P004operationalreportingguidelineToluenedrinking waterunknown0.024 µg/LMethod 524.3 version 1.0 reported a detection limit of 0.024 µg/LMethod 524.3 version 1.0high
#P005operationalreportingguidelineToluenedrinking waterunknown0.188 µg/LThe minimum quantitation levels... are 0.188 µg/L and 0.092 µg/L for methods SM 6200B and SM 6200CMethod SM 6200Bhigh
#P006operationalreportingguidelineEthylbenzenedrinking waterunknown0.01 µg/LMethod 524.3 version 1.0 has a detection limit of 0.01 µg/LMethod 524.3 version 1.0high
#P007operationalreportingguidelineo-Xylenedrinking waterunknown0.02 µg/LMethod 502.2 revision 2.1 has an MDL of 0.02 µg/L for o-xylene.Method 502.2 revision 2.1high
#P008operationalreportingguidelineToluene (Method 502.2)drinking waterrequirement0.01-0.02 µg/LMethod 502.2 revision 2.1 has an MDL in the range of 0.01–0.02 µg/L, depending on the GC column used.Method 502.2 revision 2.1high
#P009operationalreportingguidelineToluene (Method 524.2)drinking waterrequirement0.08-0.11 µg/LMethod 524.2 revision 4.1 has an MDL in the range of 0.08–0.11 µg/L, depending on the GC column and GC/MS interface used.Method 524.2 revision 4.1high
#P010operationalreportingguidelineToluene (Method SM 6200B)drinking waterrequirement0.047 µg/LMethod SM 6200B has an MDL of 0.047 µg/LMethod SM 6200Bhigh
#P011operationalreportingguidelineToluene (Method SM 6200C)drinking waterrequirement0.023 µg/Lmethod SM 6200C has an MDL of 0.023 µg/L.Method SM 6200Chigh
#P012operationalreportingguidelineToluene (Method SM 6200C Min Quant)drinking waterrequirement0.092 µg/LThe minimum quantitation levels... are 0.188 µg/L and 0.092 µg/L for methods SM 6200B and SM 6200C, respectivelyMethod SM 6200Chigh
#P013operationalreportingguidelineEthylbenzene (Method 502.2)drinking waterrequirement0.01-0.04 µg/LMethod 502.2 revision 2.1 has an MDL in the range of 0.01–0.04 µg/LMethod 502.2 revision 2.1high
#P014operationalreportingguidelineEthylbenzene (Method 524.2)drinking waterrequirement0.03-0.06 µg/Lmethod 524.2 revision 4.1 allows MDL values in the range of 0.03–0.06 µg/LMethod 524.2 revision 4.1high
#P015operationalreportingguidelineEthylbenzene (Method SM 6200B MDL)drinking waterrequirement0.032 µg/LMethod SM 6200B has an MDL of 0.032 µg/LMethod SM 6200Bhigh
#P016operationalreportingguidelineEthylbenzene (Method SM 6200B Min Quant)drinking waterrequirement0.128 µg/LThe minimum quantitation levels... are 0.128 µg/L and 0.112 µg/L for methods SM 6200B and SM 6200C, respectivelyMethod SM 6200Bhigh
#P017operationalreportingguidelineEthylbenzene (Method SM 6200C MDL)drinking waterrequirement0.028 µg/Lmethod SM 6200C has an MDL of 0.028 µg/L.Method SM 6200Chigh
#P018operationalreportingguidelineEthylbenzene (Method SM 6200C Min Quant)drinking waterrequirement0.112 µg/LThe minimum quantitation levels... are 0.128 µg/L and 0.112 µg/L for methods SM 6200B and SM 6200C, respectivelyMethod SM 6200Chigh
#P019operationalreportingguidelinem- and p-xylene (Method 502.2)drinking waterrequirement0.01-0.02 µg/LThe MDLs for both m - and p -xylene will be either 0.01 or 0.02 µg/L, depending on the GC column used for this methodMethod 502.2 revision 2.1high
#P020operationalreportingguidelineo-xylene (Method 524.2)drinking waterrequirement0.06-0.11 µg/Lmethod 524.2 revision 4.1 allows MDL values in the range of 0.06–0.11 µg/L for o -xyleneMethod 524.2 revision 4.1high
#P021operationalreportingguidelinem-xylene (Method 524.2)drinking waterrequirement0.03-0.05 µg/Lmethod 524.2 revision 4.1 allows MDL values in the range of... 0.03–0.05 µg/L for m -xyleneMethod 524.2 revision 4.1high
#P022operationalreportingguidelinep-xylene (Method 524.2)drinking waterrequirement0.06-0.13 µg/Lmethod 524.2 revision 4.1 allows MDL values in the range of... 0.06–0.13 µg/L for p -xyleneMethod 524.2 revision 4.1high
#P023operationalreportingguidelineo-xylene (Method 524.3)drinking waterrequirement0.01 µg/LMethod 524.3 version 1.0 reports... a detection limit of 0.01 µg/L [for o-xylene]Method 524.3 version 1.0high
#P024operationalreportingguidelinem/p-isomeric pair (Method 524.3)drinking waterrequirement0.02 µg/LThe method defines m -xylene and p -xylene as an isomeric pair, with a detection limit of 0.02 µg/LMethod 524.3 version 1.0high
#P025operationalreportingguidelineo-xylene (Method SM 6200B MDL)drinking waterrequirement0.038 µg/LMethod SM 6200B... has an MDL of 0.038 µg/L [for o-xylene].Method SM 6200Bhigh
#P026operationalreportingguidelinem/p-isomeric pair (Method SM 6200B MDL)drinking waterrequirement0.038 µg/LThe other two isomers have been defined as an isomeric pair, and the method reported an MDL of 0.038 µg/L.Method SM 6200Bhigh
#P027operationalreportingguidelineTotal Xylenes (Method SM 6200B Min Quant)drinking waterrequirement0.152 µg/LThe minimum quantitation level for method SM 6200B is 0.152 µg/L.Method SM 6200Bhigh
#P028operationalreportingguidelineo-xylene (Method SM 6200C MDL)drinking waterrequirement0.024 µg/LMethod SM 6200C has an MDL of 0.024 µg/L for o -xyleneMethod SM 6200Chigh
#P029operationalreportingguidelinem/p-isomeric pair (Method SM 6200C MDL)drinking waterrequirement0.021 µg/LMethod SM 6200C has an MDL of... 0.021 µg/L for the m/p -isomeric pair.Method SM 6200Chigh
#P030operationalreportingguidelineo-xylene (Method SM 6200C Min Quant)drinking waterrequirement0.096 µg/LMethod SM 6200C has minimum quantitation levels of 0.096 µg/L for o -xyleneMethod SM 6200Chigh
#P031operationalreportingguidelinem/p-isomeric pair (Method SM 6200C Min Quant)drinking waterrequirement0.084 µg/LMethod SM 6200C has minimum quantitation levels of... 0.084 µg/L for the m/p -isomeric pairMethod SM 6200Chigh

D Definitions (8)

Req ID Category Name Context Confidence
#D001total xylene concentrationthe total concentration of the three isomershigh
#D002minimum quantitation levelsthe lowest levels that can be quantified accuratelyhigh
#D003EPAU.S. Environmental Protection Agencyhigh
#D004TEXtoluene, ethylbenzene and xyleneshigh
#D005GCcapillary gas chromatographyhigh
#D006MSmass spectrometerhigh
#D007isomeric pairtwo of the three xylene isomers [that] cannot be resolved (separated) on the capillary columnhigh
#D008PQLspractical quantitation levelshigh