KOYO BEARINGS USA LLC
NPDES ID: GAP050028
D — SNC: Discharge monitoring report not received
The facility didn't submit its required discharge monitoring report.
This quarter: 24 reporting violations.
Violations
April 30, 2026
Copper, total [as Cu]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.07 mg/L (DAILY AV)
DMR, Limited - Overdue
Nickel, total [as Ni]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.38 mg/L (DAILY AV)
DMR, Limited - Overdue
Lead, total [as Pb]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.69 mg/L (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0.264 MGD (DAILY MX)
DMR, Limited - Overdue
Chromium, total [as Cr]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.77 mg/L (DAILY MX)
DMR, Limited - Overdue
Cadmium, total [as Cd]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.07 mg/L (DAILY AV)
DMR, Limited - Overdue
Cadmium, total [as Cd]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.11 mg/L (DAILY MX)
DMR, Limited - Overdue
Chromium, total [as Cr]
0% over limit
Discharged 0 mg/L against a permitted limit of 1.71 mg/L (DAILY AV)
DMR, Limited - Overdue
Zinc, total [as Zn]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.61 mg/L (DAILY MX)
DMR, Limited - Overdue
Zinc, total [as Zn]
0% over limit
Discharged 0 mg/L against a permitted limit of 1.48 mg/L (MO AVG)
DMR, Limited - Overdue
Silver, total [as Ag]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.24 mg/L (DAILY AV)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 5.5 SU (MINIMUM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9.5 SU (MAXIMUM)
DMR, Limited - Overdue
Cyanide, total [as CN]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.585 mg/L (DAILY AV)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 0 mg/L against a permitted limit of 100 mg/L (DAILY MX)
DMR, Limited - Overdue
Copper, total [as Cu]
0% over limit
Discharged 0 mg/L against a permitted limit of 3.38 mg/L (DAILY MX)
DMR, Limited - Overdue
Oil & Grease
0% over limit
Discharged 0 mg/L against a permitted limit of 100 mg/L (DAILY AV)
DMR, Limited - Overdue
Total toxic organics [TTO] [40 CFR433]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.13 mg/L (DAILY AV)
DMR, Limited - Overdue
Nickel, total [as Ni]
0% over limit
Discharged 0 mg/L against a permitted limit of 3.98 mg/L (DAILY MX)
DMR, Limited - Overdue
Total toxic organics [TTO] [40 CFR433]
0% over limit
Discharged 0 mg/L against a permitted limit of 2.13 mg/L (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0.156 MGD (DAILY AV)
DMR, Limited - Overdue
Lead, total [as Pb]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.43 mg/L (DAILY AV)
DMR, Limited - Overdue
Cyanide, total [as CN]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.585 mg/L (DAILY MX)
DMR, Limited - Overdue
Silver, total [as Ag]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.43 mg/L (DAILY MX)
DMR, Limited - Overdue
March 31, 2026
Oil & Grease
50% over limit
Discharged 150 mg/L against a permitted limit of 100 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Oil & Grease
50% over limit
Discharged 150 mg/L against a permitted limit of 100 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
Oil & Grease
40% over limit
Discharged 140 mg/L against a permitted limit of 100 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Oil & Grease
40% over limit
Discharged 140 mg/L against a permitted limit of 100 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Oil & Grease
260% over limit
Discharged 360 mg/L against a permitted limit of 100 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Oil & Grease
260% over limit
Discharged 360 mg/L against a permitted limit of 100 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
November 30, 2024
Silver, total [as Ag]
0% over limit
Discharged 0.016 mg/L against a permitted limit of 0.43 mg/L (DAILY MX)
DMR, Limited - Overdue
Total toxic organics [TTO] [40 CFR433]
0% over limit
Discharged 0.08 mg/L against a permitted limit of 2.13 mg/L (DAILY MX)
DMR, Limited - Overdue
Silver, total [as Ag]
0% over limit
Discharged 0.016 mg/L against a permitted limit of 0.24 mg/L (DAILY AV)
DMR, Limited - Overdue
Total toxic organics [TTO] [40 CFR433]
0% over limit
Discharged 0.08 mg/L against a permitted limit of 2.13 mg/L (DAILY AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.077 MGD against a permitted limit of 0.156 MGD (DAILY AV)
DMR, Limited - Overdue
Nickel, total [as Ni]
0% over limit
Discharged 0.06 mg/L against a permitted limit of 2.38 mg/L (DAILY AV)
DMR, Limited - Overdue
Nickel, total [as Ni]
0% over limit
Discharged 0.06 mg/L against a permitted limit of 3.98 mg/L (DAILY MX)
DMR, Limited - Overdue
Zinc, total [as Zn]
0% over limit
Discharged 0.1 mg/L against a permitted limit of 2.61 mg/L (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.095 MGD against a permitted limit of 0.264 MGD (DAILY MX)
DMR, Limited - Overdue
Zinc, total [as Zn]
0% over limit
Discharged 0.1 mg/L against a permitted limit of 1.48 mg/L (MO AVG)
DMR, Limited - Overdue
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 17, 2026 (5 hours ago)