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Tap water quality report

Oswego City

EPA monitoring tested this supplier for 103 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

103
contaminants tested
19
detected
29,400
people served
14
health-based violations
New York rankingsLead in New YorkPFAS in New York
Water source
Surface water
Ownership
Local government
Counties served
Oswego

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.

14
health-based violations
14
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2015-03-01 → 2015-03-31
TT Health-based Resolved 2015-03-01 → 2015-03-31
TT Health-based Resolved 2015-03-01 → 2015-03-31
TT Health-based Resolved 2015-03-01 → 2015-03-31
TT Health-based Resolved 2013-01-01
TT Health-based Resolved 2013-01-01
TT Health-based Resolved 2013-01-01
TT Health-based Resolved 2013-01-01
TT Health-based Resolved 2013-01-01
TT Health-based Resolved 2012-01-01

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
Fluoride
800 µg/L 20%
of the EPA limit 4000 µg/L
worst single sample: 1100 µg/L
135/136 SYR4 2012–2019
Bromodichloromethane
18.6 µg/L
No EPA limit set
worst single sample: 24 µg/L
69/69 SYR4 2012–2019
Chloroform
40.6 µg/L
No EPA limit set
worst single sample: 62 µg/L
69/69 SYR4 2012–2019
Dibromochloromethane
8.14 µg/L
No EPA limit set
worst single sample: 9.9 µg/L
69/69 SYR4 2012–2019
TTHM
69.4 µg/L 87%
of the EPA limit 80 µg/L
worst single sample: 90 µg/L
69/69 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
25.4 µg/L 42%
of the EPA limit 60 µg/L
worst single sample: 30 µg/L
69/69 SYR4 2012–2019
Dichloroacetic Acid
13.95 µg/L
No EPA limit set
worst single sample: 18 µg/L
68/69 SYR4 2012–2019
Trichloroacetic Acid
10 µg/L
No EPA limit set
worst single sample: 13 µg/L
67/69 SYR4 2012–2019
Bromoform
1.88 µg/L
No EPA limit set
worst single sample: 2.6 µg/L
25/69 SYR4 2012–2019
Monochloroacetic Acid
3.39 µg/L
No EPA limit set
worst single sample: 7.3 µg/L
22/69 SYR4 2012–2019
Dibromoacetic Acid
2.725 µg/L
No EPA limit set
worst single sample: 5.1 µg/L
20/69 SYR4 2012–2019
Lead
0.0027 mg/L 18%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2022
Nitrate
370 µg/L 3.7%
of the EPA limit 10000 µg/L
 14/16 SYR4 2012–2019
Barium
161.2 µg/L 8.1%
of the EPA limit 2000 µg/L
worst single sample: 220 µg/L
7/7 SYR4 2012–2019
Chromium
1.885 µg/L 1.9%
of the EPA limit 100 µg/L
worst single sample: 1.9 µg/L
4/7 SYR4 2012–2019
Nitrate-Nitrite
365 µg/L 3.7%
of the EPA limit 10000 µg/L
worst single sample: 370 µg/L
3/3 SYR4 2014–2019
Cyanide
45 µg/L 23%
of the EPA limit 200 µg/L
 1/7 SYR4 2012–2019
Combined Radium (-226 And -228)
1.5 pCi/L 30%
of the EPA limit 5 pCi/L
 1/1 SYR4 2016
Monobromoacetic Acid
1.3 µg/L
No EPA limit set
 1/69 SYR4 2012–2019
84 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CORRADINO, ROBERT
Phone
315-342-8140
Email
[email protected]

Frequently asked questions about Oswego City

Is Oswego City tap water safe to drink?

EPA monitoring detected 19 contaminants in Oswego City'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 Oswego City's water?

EPA monitoring detected Fluoride, Bromodichloromethane, Chloroform, Dibromochloromethane, TTHM, and others. The full list with the level and data source for each is above.

How many people does Oswego City serve?

Oswego City reports serving 29,400 people in New York, per its EPA record.

Has Oswego City had any water quality violations?

The EPA has 14 violations on file for Oswego City, of which 14 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.