Clean Water Act discharge permit · NPDES MO0004782

BOEING COMPANY, THE, St. Louis, MO: NPDES MO0004782 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
19Pollutants under a numeric limit
7Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

BOEING COMPANY, THE, held by The Boeing Company, holds NPDES permit MO0004782. EPA’s file records it issued December 1, 2021 and expiring March 31, 2026.

BOEING COMPANY, THE, St. Louis, Missouri: Individual permit MO0004782, held by The Boeing Company; Effective; issued December 1, 2021, term to March 31, 2026.

Oil and grease [soxhlet extr.] tot.: 7 limits, 28 violations of any kind, 16 effluent exceedances, latest September 30, 2015, largest 120% over the limit.
Oxygen demand, chem. [high level] [COD]: 9 limits, 26 violations of any kind, 12 effluent exceedances, latest March 31, 2013, largest 143% over the limit.
Chlorine, total residual: 2 limits, 6 violations of any kind, 6 effluent exceedances, latest March 31, 2024, largest 26,456% over the limit.
pH: 16 limits, 22 violations of any kind, 4 effluent exceedances, latest June 30, 2023.
Solids, total suspended: 10 limits, 2 violations of any kind, 2 effluent exceedances, latest March 31, 2022, largest 500% over the limit.
Solids, settleable: 9 limits, 2 violations of any kind, 2 effluent exceedances, latest June 30, 2018, largest 500% over the limit.
Chromium, total [as Cr]: 0 limits, 2 violations of any kind, 2 effluent exceedances, latest March 31, 2007, largest 278% over the limit.
Copper, total recoverable: 9 limits, 14 violations of any kind, 0 effluent exceedances.
LC50 Static 48Hr Acute Pimephales promelas: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia: 0 limits, 3 violations of any kind, 0 effluent exceedances.
Sulfate [as S]: 9 limits, 0 violations of any kind, 0 effluent exceedances.
Nitrogen, Kjeldahl, total [as N]: 9 limits, 0 violations of any kind, 0 effluent exceedances.
Nitrite + Nitrate total [as N]: 9 limits, 0 violations of any kind, 0 effluent exceedances.
Phosphorus, total [as P]: 9 limits, 0 violations of any kind, 0 effluent exceedances.
Iron, total recoverable: 9 limits, 0 violations of any kind, 0 effluent exceedances.
Aluminum, total recoverable: 9 limits, 0 violations of any kind, 0 effluent exceedances.
Chloride: 9 limits, 0 violations of any kind, 0 effluent exceedances.
Chlorides + Sulfates: 9 limits, 0 violations of any kind, 0 effluent exceedances.
Storm water flow: 7 limits, 0 violations of any kind, 0 effluent exceedances.
Temperature, water deg. fahrenheit: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Lead, total recoverable: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Flow, in conduit or thru treatment plant: 2 limits, 0 violations of any kind, 0 effluent exceedances.

Other permits held by The Boeing Company

THE BOEING COMPANY TRACT 5, St. Charles: MO0135208, issued October 1, 2020
THE BOEING COMPANY TRACT 5, St. Charles: MORA23126, issued December 21, 2022
BOEING 73-075 RAMP SHELTERS ABCF, Berkeley: MORA30652, issued September 10, 2026

BOEING COMPANY, THE among its neighbors

EPA’s permit file holds 53 discharge permits in the Headwaters Coldwater Creek subwatershed (HUC 103002000802), MO0004782 among them. Its county holds 872, 8 of them major permits; MO0004782 is a minor permit.

Other permits in the Headwaters Coldwater Creek subwatershed (HUC 103002000802)

AEROSPACE COMPOSITES CENTER LLC, St. Louis: MO0135950, minor permit, discharging to 100K Extent-Remaining Streams, permit term to March 31, 2026
AIR GENERAL INC, St Louis: MONX00723, minor permit, permit term to August 22, 2024
ALDI STORE 88, Florissant: MORA24123, minor permit, discharging to Tributary to Coldwater Cr., permit term to February 7, 2027
ALPHA PACKAGING, Hazelwood: MONX00926, minor permit, permit term to July 6, 2028
AMAZON.COM SERVICES LLC - DLI6, Hazelwood: MOR80C653, minor permit, discharging to Tributary to Coldwater Cr., permit term to November 30, 2027
ARCH CITY TECHNOLOGY, Berkeley: MONX00922, minor permit, permit term to July 5, 2028
BOEING 73-075 RAMP SHELTERS ABCF, Berkeley: MORA30652, minor permit, permit term to February 7, 2027
BOEING BLDG 73-060, St. Louis: MORA28997, minor permit, permit term to February 7, 2027
BOEING BLDG 73-150, Berkeley: MORA28736, minor permit, permit term to February 7, 2027
BOEING NORTH TRACT, Hazelwood: MORA26902, minor permit, permit term to February 7, 2027

Identity

Facility as filed	BOEING COMPANY, THE
Permittee as filed	The Boeing Company
NPDES ID	MO0004782
Permit status	Effective
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	December 1, 2021
Expiration date	March 31, 2026
Address	St. Louis, MO 63134
Subwatershed	Headwaters Coldwater Creek (HUC 103002000802)
SIC	6512 – Nonresidential Building Operators
Other EPA IDs (FRS)	RCRA handler MOD000818906; ICIS-AIR source MO0000002918900230

Effluent limits and exceedances

22Pollutants on file
19Under a numeric limit
10With a violation of any kind
7With 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	Largest exceedance, as filed
Oil and grease [soxhlet extr.] tot.	7	28	16	September 30, 2015	120% over the limit
Oxygen demand, chem. [high level] [COD]	9	26	12	March 31, 2013	143% over the limit
Chlorine, total residual	2	6	6	March 31, 2024	26,456% over the limit
pH	16	22	4	June 30, 2023
Solids, total suspended	10	2	2	March 31, 2022	500% over the limit
Solids, settleable	9	2	2	June 30, 2018	500% over the limit
Chromium, total [as Cr]	0	2	2	March 31, 2007	278% over the limit
Copper, total recoverable	9	14	0
LC50 Static 48Hr Acute Pimephales promelas	0	4	0
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia	0	3	0
Sulfate [as S]	9	0	0
Nitrogen, Kjeldahl, total [as N]	9	0	0
Nitrite + Nitrate total [as N]	9	0	0
Phosphorus, total [as P]	9	0	0
Iron, total recoverable	9	0	0
Aluminum, total recoverable	9	0	0
Chloride	9	0	0
Chlorides + Sulfates	9	0	0
Storm water flow	7	0	0
Temperature, water deg. fahrenheit	2	0	0
Lead, total recoverable	2	0	0
Flow, in conduit or thru treatment plant	2	0	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MO0004782.

Inspections

EPA’s inspection file holds no inspection for NPDES MO0004782.

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 MO0004782.

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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers NPDES permit MO0004782, held by Boeing Company, The in St. Louis, MO, with a status of Effective and a Minor discharger class. The page lists 19 pollutants under a numeric limit, 7 pollutants with an effluent exceedance, and 22 pollutants on file.