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Tap water quality report

Cottage Grove, City of

EPA monitoring tested this supplier for 89 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

89
contaminants tested
6
detected
10,879
people served
46
health-based violations
Oregon rankingsLead in OregonPFAS in Oregon
Water source
Surface water
Ownership
Local government
Counties served
Lane

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.

46
health-based violations
67
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2009-11-01 → 2009-11-30
TT Health-based Resolved 2009-11-01 → 2009-11-30
TT Health-based Resolved 2009-11-01 → 2009-11-30
TT Health-based Resolved 2007-04-01 → 2007-04-30
TT Health-based Resolved 1999-04-01 → 1999-04-30
TT Health-based Resolved 1998-12-01 → 1998-12-31
TT Health-based Resolved 1998-12-01 → 1998-12-31
TT Health-based Resolved 1997-10-01 → 1997-10-31
TT Health-based Resolved 1997-09-01 → 1997-09-30
TT Health-based Resolved 1997-02-01 → 1997-02-28

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
75 µg/L 5.8%
of the EPA limit 1300 µg/L
worst single sample: 115 µg/L
105/119 SYR4 2012–2018
Lead
26.55 µg/L 177%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 28 µg/L
50/119 SYR4 2012–2018
TTHM
42.53 µg/L 53%
of the EPA limit 80 µg/L
worst single sample: 47.3 µg/L
28/28 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
23.2 µg/L 39%
of the EPA limit 60 µg/L
worst single sample: 26.3 µg/L
28/28 SYR4 2012–2019
Lead
0.0080 mg/L 53%
of the EPA limit 0.0150 mg/L
 21/21 LCR 2024
Gross Alpha, Excl. Radon And U
8.86 pCi/L 59%
of the EPA limit 15 pCi/L
 1/2 SYR4 2015–2018
83 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-PF3ONSAdonaAtrazineBhc-GammaBenzeneBenzo(A)PyreneChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorNetfosaaNfdhaNmefosaaNitrateOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
COTTAGE GROVE, CITY OF
Phone
541-767-4106
Email
[email protected]

Frequently asked questions about Cottage Grove, City of

Is Cottage Grove, City of tap water safe to drink?

EPA monitoring detected 6 contaminants in Cottage Grove, 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 Cottage Grove, 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 Cottage Grove, City of serve?

Cottage Grove, City of reports serving 10,879 people in Oregon, per its EPA record.

Has Cottage Grove, City of had any water quality violations?

The EPA has 67 violations on file for Cottage Grove, City of, of which 46 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.