Clean Water Act discharge permit · NPDES INP000741

YAMAHA MARINE PRECISION PROPELLER INDUSTRIES, Greenfield, IN: NPDES INP000741 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
13Pollutants under a numeric limit
1Pollutants with an effluent exceedance
1Inspections on file
0Formal enforcement actions

YAMAHA MARINE PRECISION PROPELLER INDUSTRIES, held by YAMAHA MARINE PRECISION PROPELLER INC., holds NPDES permit INP000741, which discharges to Greenfield Potw. EPA’s file records it issued October 1, 2024 and expiring September 30, 2029.

YAMAHA MARINE PRECISION PROPELLER INDUSTRIES, Greenfield, Indiana: Individual industrial user permit INP000741, held by YAMAHA MARINE PRECISION PROPELLER INC.; Effective; issued October 1, 2024, term to September 30, 2029, by IDEM; discharges to GREENFIELD POTW.

pH: 4 limits, 7 violations of any kind, 7 effluent exceedances, latest November 30, 2025.
Solids, total suspended: 4 limits, 2 violations of any kind, 0 effluent exceedances.
Oil and grease, hexane extr method: 4 limits, 1 violation of any kind, 0 effluent exceedances.
BOD, 5-day, 20 deg. C: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Nitrogen, ammonia total [as N]: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Barium, total recoverable: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Nickel, total recoverable: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Zinc, total recoverable: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Cadmium, total recoverable: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Lead, total recoverable: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Chromium, total recoverable: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Copper, total recoverable: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Flow, in conduit or thru treatment plant: 4 limits, 0 violations of any kind, 0 effluent exceedances.

June 11, 2026: Evaluation (IU) (S).

YAMAHA MARINE PRECISION PROPELLER INDUSTRIES among its neighbors

Its county holds 74, 1 of them major permits; INP000741 is a minor permit.

Other permits in the county

600 LAND INCORPORATED MOUNT COMFORT TRANSFER STATION, Greenfield: INRM01240, minor permit, discharging to Buck Creek, permit term to February 25, 2024
ABRASIVE PROCESSING & TECHNOLOGIES, LLC., Fortville: INP000110, minor permit, discharging to FORTVILLE POTW (FALL CR), permit term to October 31, 2021
ALCATEL-LUCENT USA INC, Fortville: IN0057720, minor permit, discharging to FALL CR VIA RASH DITCH, permit term to July 31, 2012
AMAZON.COM SERVICES LLC DIN8, Greenfield: INRM02768, minor permit, permit term to March 15, 2026
AMAZON.COM SERVICES LLC OIN9, Greenfield: INRM03271, minor permit, permit term to June 8, 2031
AMAZON.COM SERVICES MQJ1, Greenfield: INRM02694, minor permit, permit term to August 20, 2025
ARROWHEAD MOBILE HOME PARK, New Palestine: IN0057959, minor permit, discharging to SUGAR CR TO DRIFTWOOD RIVER, permit term to February 28, 2025
ATMI INDY LLC, Greenfield: INRM01875, minor permit, discharging to Indian Creek, permit term to June 17, 2025
ATMI PLANT 2, Greenfield: INRA09252, minor permit, permit term to March 7, 2027
AVERY DENNISON FASSON ROLL, Greenfield: INRM00182, minor permit, permit term to May 24, 2019

Identity

Facility as filed	YAMAHA MARINE PRECISION PROPELLER INDUSTRIES
Permittee as filed	YAMAHA MARINE PRECISION PROPELLER INC.
NPDES ID	INP000741
Permit status	Effective
Permit type	Individual industrial user permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	October 1, 2024
Expiration date	September 30, 2029
Issuing agency	IDEM
Address	Greenfield, IN 46140
Receiving water	GREENFIELD POTW
Other EPA IDs (FRS)	ICIS-AIR source IN0000001805900047

Effluent limits and exceedances

13Pollutants on file
13Under a numeric limit
3With a violation of any kind
1With an effluent exceedance

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance
pH	4	7	7	November 30, 2025
Solids, total suspended	4	2	0
Oil and grease, hexane extr method	4	1	0
BOD, 5-day, 20 deg. C	4	0	0
Nitrogen, ammonia total [as N]	4	0	0
Barium, total recoverable	4	0	0
Nickel, total recoverable	4	0	0
Zinc, total recoverable	4	0	0
Cadmium, total recoverable	4	0	0
Lead, total recoverable	4	0	0
Chromium, total recoverable	4	0	0
Copper, total recoverable	4	0	0
Flow, in conduit or thru treatment plant	4	0	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES INP000741.

Inspections

Date	What EPA recorded	Agency
June 11, 2026	Evaluation (IU)	S

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES INP000741.

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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers Clean Water Act discharge permit NPDES INP000741, held by YAMAHA MARINE PRECISION PROPELLER INC. for YAMAHA MARINE PRECISION PROPELLER INDUSTRIES in Greenfield, IN, as the permit file stood when it was loaded on September 15, 2026. The permit is listed with a Minor discharger class, 13 pollutants under a numeric limit, and 1 pollutant with an effluent exceedance.