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Tap water quality report

Tigard, City of

EPA monitoring tested this supplier for 104 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

104
contaminants tested
11
detected
62,500
people served
4
health-based violations
Oregon rankingsLead in OregonPFAS in Oregon
Water source
SWP
Ownership
Local government
Counties served
Washington

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

4
health-based violations
23
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2012-11-01 → 2012-11-30
MCL Health-based Resolved 2012-11-01 → 2012-11-30
MCL Health-based Resolved 2012-11-01 → 2012-11-30
MCL Health-based Resolved 2012-11-01 → 2012-11-30
MR Monitoring Resolved 2025-01-01 → 2025-03-31
MR Monitoring Resolved 2025-01-01 → 2025-03-31
MR Monitoring Archived 2023-01-01 → 2025-12-31
MR Monitoring Archived 2023-01-01 → 2025-12-31
MR Monitoring Archived 2023-01-01 → 2025-12-31
MR Monitoring Archived 2023-01-01 → 2025-12-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
427.8 µg/L 33%
of the EPA limit 1300 µg/L
worst single sample: 941 µg/L
953/1136 SYR4 2012–2017
Lead
23 µg/L 153%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 648 µg/L
914/1136 SYR4 2012–2017
TTHM
40.795 µg/L 51%
of the EPA limit 80 µg/L
worst single sample: 58 µg/L
252/252 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
42.07 µg/L 70%
of the EPA limit 60 µg/L
worst single sample: 57.3 µg/L
252/252 SYR4 2012–2019
Lead
0.00085 mg/L 5.7%
of the EPA limit 0.0150 mg/L
 52/52 LCR 2023
Nitrate
2700 µg/L 27%
of the EPA limit 10000 µg/L
worst single sample: 3400 µg/L
42/56 SYR4 2012–2019
Nitrate-Nitrite
2565 µg/L 26%
of the EPA limit 10000 µg/L
worst single sample: 3500 µg/L
12/16 SYR4 2012–2018
Nitrite
142 µg/L 14%
of the EPA limit 1000 µg/L
worst single sample: 170 µg/L
9/17 SYR4 2012–2018
Barium
4.661 µg/L 0.2%
of the EPA limit 2000 µg/L
worst single sample: 4.82 µg/L
2/5 SYR4 2012–2017
Combined Radium (-226 And -228)
1.11 pCi/L 22%
of the EPA limit 5 pCi/L
 1/4 SYR4 2012–2017
Di(2-ethylhexyl) Phthalate
1.7 µg/L 28%
of the EPA limit 6 µg/L
 1/23 SYR4 2012–2018
93 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromateChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
TIGARD, CITY OF
Phone
503-718-2690
Email
[email protected]

Frequently asked questions about Tigard, City of

Is Tigard, City of tap water safe to drink?

EPA monitoring detected 11 contaminants in Tigard, City of's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Tigard, City of's water?

EPA monitoring detected Copper, Lead, TTHM, Total Haloacetic Acids (HAA5), Lead, and others. The full list with the level and data source for each is above.

How many people does Tigard, City of serve?

Tigard, City of reports serving 62,500 people in Oregon, per its EPA record.

Has Tigard, City of had any water quality violations?

The EPA has 23 violations on file for Tigard, City of, of which 4 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.