Tap WaterIndex

← Oregon

Tap water quality report

Jefferson, City of

EPA monitoring tested this supplier for 74 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

74
contaminants tested
6
detected
3,348
people served
1
health-based violations
Oregon rankingsLead in OregonPFAS in Oregon
Water source
Surface water
Ownership
Local government
Counties served
Marion

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.

1
health-based violations
52
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 1995-06-01 → 1995-06-30
MR Monitoring Resolved 2025-03-01 → 2025-03-31
MR Monitoring Resolved 2025-03-01 → 2025-03-31
MR Monitoring Resolved 2025-03-01 → 2025-03-31
MON Monitoring Resolved 2021-08-01 → 2021-08-31
MR Monitoring Resolved 2018-01-01 → 2018-01-31
MR Monitoring Resolved 2018-01-01 → 2018-01-31
MR Monitoring Resolved 2018-01-01 → 2018-01-31
MR Monitoring Resolved 2012-05-01 → 2012-05-31
MR Monitoring Resolved 2012-05-01 → 2012-05-31

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
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 25/25 LCR 2025
Copper
718.35 µg/L 55%
of the EPA limit 1300 µg/L
worst single sample: 794 µg/L
18/30 SYR4 2012–2018
TTHM
18.7 µg/L 23%
of the EPA limit 80 µg/L
worst single sample: 19.6 µg/L
11/11 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
18.5 µg/L 31%
of the EPA limit 60 µg/L
worst single sample: 19.5 µg/L
11/11 SYR4 2012–2019
Lead
4.725 µg/L 32%
of the EPA limit 15 µg/L
worst single sample: 5.1 µg/L
6/30 SYR4 2012–2018
Nitrate
414 µg/L 4.1%
of the EPA limit 10000 µg/L
 6/18 SYR4 2012–2019
68 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JEFFERSON, CITY OF
Phone
541-327-1135
Email
[email protected]

Frequently asked questions about Jefferson, City of

Is Jefferson, City of tap water safe to drink?

EPA monitoring detected 6 contaminants in Jefferson, 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 Jefferson, City of's water?

EPA monitoring detected Lead, Copper, 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 Jefferson, City of serve?

Jefferson, City of reports serving 3,348 people in Oregon, per its EPA record.

Has Jefferson, City of had any water quality violations?

The EPA has 52 violations on file for Jefferson, City of, of which 1 is 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.