City of Tigard

Published drinking-water records and contacts for City of Tigard. System OR4100878. Review sources and dates; not a real-time water assessment.

System ID: OR4100878
State or territory: OR
Published population served: 62500
System type (source code): CWS

Published records and dates

PFAS / lithium (EPA UCMR 5): 420 — 2024-04-08 – 2025-10-06
Lead and copper monitoring summaries: 54 — 1992-07-01 – 2026-12-31

Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.

Published testing results

Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.

“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example

EPA UCMR 5 — most recent imported sample per substance
Substance	Published result	Reporting limit	Sample date	Sampling location
11Cl-PF3OUdS	< 0.005 µg/L	0.005 µg/L	2025-10-06	ASR Well #2 / 00005
4:2 FTS	< 0.003 µg/L	0.003 µg/L	2025-10-06	ASR Well #2 / 00005
6:2 FTS	< 0.005 µg/L	0.005 µg/L	2025-10-06	ASR Well #2 / 00005
8:2 FTS	< 0.005 µg/L	0.005 µg/L	2025-10-06	ASR Well #2 / 00005
9Cl-PF3ONS	< 0.002 µg/L	0.002 µg/L	2025-10-06	ASR Well #2 / 00005
ADONA	< 0.003 µg/L	0.003 µg/L	2025-10-06	ASR Well #2 / 00005
HFPO-DA	< 0.005 µg/L	0.005 µg/L	2025-10-06	ASR Well #2 / 00005
NEtFOSAA	< 0.005 µg/L	0.005 µg/L	2025-10-06	ASR Well #2 / 00005
NFDHA	< 0.02 µg/L	0.02 µg/L	2025-10-06	ASR Well #2 / 00005
NMeFOSAA	< 0.006 µg/L	0.006 µg/L	2025-10-06	ASR Well #2 / 00005
PFBA	< 0.005 µg/L	0.005 µg/L	2025-10-06	ASR Well #2 / 00005
PFBS	< 0.003 µg/L	0.003 µg/L	2025-10-06	ASR Well #2 / 00005
PFDA	< 0.003 µg/L	0.003 µg/L	2025-10-06	ASR Well #2 / 00005
PFDoA	< 0.003 µg/L	0.003 µg/L	2025-10-06	ASR Well #2 / 00005
PFEESA	< 0.003 µg/L	0.003 µg/L	2025-10-06	ASR Well #2 / 00005
PFHpA	< 0.003 µg/L	0.003 µg/L	2025-10-06	ASR Well #2 / 00005
PFHpS	< 0.003 µg/L	0.003 µg/L	2025-10-06	ASR Well #2 / 00005
PFHxA	< 0.003 µg/L	0.003 µg/L	2025-10-06	ASR Well #2 / 00005
PFHxS	< 0.003 µg/L	0.003 µg/L	2025-10-06	ASR Well #2 / 00005
PFMBA	< 0.003 µg/L	0.003 µg/L	2025-10-06	ASR Well #2 / 00005
PFMPA	< 0.004 µg/L	0.004 µg/L	2025-10-06	ASR Well #2 / 00005
PFNA	< 0.004 µg/L	0.004 µg/L	2025-10-06	ASR Well #2 / 00005
PFOA	< 0.004 µg/L	0.004 µg/L	2025-10-06	ASR Well #2 / 00005
PFOS	< 0.004 µg/L	0.004 µg/L	2025-10-06	ASR Well #2 / 00005
PFPeA	< 0.003 µg/L	0.003 µg/L	2025-10-06	ASR Well #2 / 00005
PFPeS	< 0.004 µg/L	0.004 µg/L	2025-10-06	ASR Well #2 / 00005
PFTA	< 0.008 µg/L	0.008 µg/L	2025-10-06	ASR Well #2 / 00005
PFTrDA	< 0.007 µg/L	0.007 µg/L	2025-10-06	ASR Well #2 / 00005
PFUnA	< 0.002 µg/L	0.002 µg/L	2025-10-06	ASR Well #2 / 00005
lithium	< 9 µg/L	9 µg/L	2025-10-06	ASR Well #2 / 00005

Download all EPA UCMR 5 records (CSV)

Lead and copper: 90th-percentile summaries

These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile

Eight most recent imported monitoring summaries
Substance	Published 90th percentile	Monitoring period	Source quarter
Lead (PB90)	0.00098 mg/L	2024-01-01 – 2026-12-31	2026Q3
Lead (PB90)	0.00098 mg/L	2026-01-01 – 2026-06-30	2026Q3
Lead (PB90)	0.00085 mg/L	2021-01-01 – 2023-12-31	2026Q3
Lead (PB90)	0 mg/L	2018-01-01 – 2020-12-31	2026Q3
Lead (PB90)	0 mg/L	2017-01-01 – 2017-06-30	2026Q3
Lead (PB90)	0.0037 mg/L	2016-07-01 – 2016-12-31	2026Q3
Lead (PB90)	0.013 mg/L	2016-01-01 – 2016-06-30	2026Q3
Lead (PB90)	0.0141 mg/L	2015-07-01 – 2015-12-31	2026Q3

Published compliance history

14 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.

Twenty most recent imported compliance records
Rule / record	Period	Recorded status	Health-based (EPA classification)	Source quarter
Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP)	2025-01-01 – 2025-03-31	Resolved	No	2026Q3
Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP)	2025-01-01 – 2025-03-31	Resolved	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2023-01-01 – 2025-12-31	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2023-01-01 – 2025-12-31	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2023-01-01 – 2025-12-31	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2023-01-01 – 2025-12-31	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2023-01-01 – 2025-12-31	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2023-01-01 – 2025-12-31	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2023-01-01 – 2025-12-31	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2023-01-01 – 2025-12-31	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2023-01-01 – 2025-12-31	Archived	No	2026Q3
Inorganic Chemicals / Monitoring, Regular	2023-01-01 – 2025-12-31	Archived	No	2026Q3
Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP)	2020-07-01 – 2020-09-30	Resolved	No	2026Q3
Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP)	2020-07-01 – 2020-09-30	Resolved	No	2026Q3

Source dates and refresh checks

A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.

EPA SDWIS lead/copper summaries and service areas — source period: — – —; last checked: 2026-10-17
EPA SDWIS contacts and compliance records — source period: — – —; last checked: 2026-10-17
EPA UCMR 5 sample results — source period: 2023-01-03 – 2026-06-17; last checked: 2026-10-17

Administrative contact (EPA filing)

City of Tigard: 503-718-2690

An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.

Official state resources · How to read these records