00591 PFAS Sample Results | Data Online | Oregon Drinking Water Services

More Information: PFAS Rule Information & Sampling Project
Abbreviations: MCL = Maximum contaminant level, MRL = Minimum reporting level, ND = Not detected at the minimum reporting level, PFAS = Per- and polyfluoroalkyl substances. Analytes with an MCL are in bold. Sample results detected above the MCL are in bold red.
Water systems must be in compliance with the MCL by 2029. Sample results can be used for compliance when their MRL meets the requirements of the PFAS rule. Results that cannot be used for compliance are shaded gray and italicized.

Initial Monitoring

This water system is part of the OHA PFAS Sampling Project. DEQ will collect the first sample from each active entry point by the end of July 2026. The water system is responsible for collecting additional samples needed to meet the initial monitoring requirements.
EP ID	Entry point name	Water type	Availability	Frequency	Schedule begin	Schedule end	First quarter or First sample	Second quarter or Second sample	Third quarter	Fourth quarter
EP-A	EP FOR WTP FOR CLACKAMAS RIVER	SW	Permanent	4 quarters	1/1/2023					10/14/2025
For each active entry point, collect 4 consecutive quarters of samples within a 12-month period with samples collected 2 to 4 months apart.

Sample Summaries

For compliance?	EP ID	Entry point name	Sample date	# Detections	# MCL exceedances	Sample ID
Yes	EP-A	EP FOR WTP FOR CLACKAMAS RIVER	10/14/2025	0	0	K2510172-001-P

Sample Results

For compliance?	EP ID	Entry point name	Sample date	Received date	Analyte code	Analyte abbreviation	Analyte name	Result (ng/L)	MCL (ng/L)	MRL (ng/L)	Sample ID	Lab ID	Lab name	Analysis method	Method name	TINWSF ISN	TSASAMPL ISN	TSASAR ISN	SelectDataSet	SelectAnalyte	SelectDetects	SelectLabID	SelectLabName	SelectMethod	SelectMethodName
Yes	EP-A	EP FOR WTP FOR CLACKAMAS RIVER	10/14/2025	01/07/2026	2816	HFPO-DA	Hexafluoropropylene oxide dimer acid	ND	10	1.00	K2510172-001-P	WA100010	ALS ENVIRONMENTAL - KELSO	533	PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS	17299	3041760	4030433	Yes	2816M	N	WA100010	ALS ENVIRONMENTAL - KELSO	533	PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes	EP-A	EP FOR WTP FOR CLACKAMAS RIVER	10/14/2025	01/07/2026	2801	PFBS	Perfluorobutanesulfonic acid	ND		1.00	K2510172-001-P	WA100010	ALS ENVIRONMENTAL - KELSO	533	PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS	17299	3041760	4030518	Yes	2801M	N	WA100010	ALS ENVIRONMENTAL - KELSO	533	PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes	EP-A	EP FOR WTP FOR CLACKAMAS RIVER	10/14/2025	01/07/2026	2803	PFHxS	Perfluorohexanesulfonic acid	ND	10	1.00	K2510172-001-P	WA100010	ALS ENVIRONMENTAL - KELSO	533	PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS	17299	3041760	4030501	Yes	2803M	N	WA100010	ALS ENVIRONMENTAL - KELSO	533	PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes	EP-A	EP FOR WTP FOR CLACKAMAS RIVER	10/14/2025	01/07/2026	2804	PFNA	Perfluorononanoic acid	ND	10	1.00	K2510172-001-P	WA100010	ALS ENVIRONMENTAL - KELSO	533	PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS	17299	3041760	4030484	Yes	2804M	N	WA100010	ALS ENVIRONMENTAL - KELSO	533	PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes	EP-A	EP FOR WTP FOR CLACKAMAS RIVER	10/14/2025	01/07/2026	2806	PFOA	Perfluorooctanoic acid	ND	4.0	1.00	K2510172-001-P	WA100010	ALS ENVIRONMENTAL - KELSO	533	PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS	17299	3041760	4030450	Yes	2806M	N	WA100010	ALS ENVIRONMENTAL - KELSO	533	PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes	EP-A	EP FOR WTP FOR CLACKAMAS RIVER	10/14/2025	01/07/2026	2805	PFOS	Perfluorooctanesulfonic acid	ND	4.0	1.00	K2510172-001-P	WA100010	ALS ENVIRONMENTAL - KELSO	533	PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS	17299	3041760	4030467	Yes	2805M	N	WA100010	ALS ENVIRONMENTAL - KELSO	533	PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS