American Hydro LLC

What they make

• equipment overhauls
• refurbishment
• integrated machining services
• welding repairs
• inspection
• in-situ machining
• dynamic balancing
• engineering
• Ontario Power Generation
• Ameren Missouri

NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026

Products

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
Flinchbaugh Engineering INC	York	Machine Shops 332710	● ACTIVE	1.8 KM
Strube INC	Marietta	Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing 333612	◐ LIKELY ACTIVE	9.3 KM
Quigley Motor Company, Incorporated	Manchester	Motor Vehicle Transmission and Power Train Parts Manufacturing 336350	● ACTIVE	10.1 KM
JHJ Hilbert Anderson Inc	Jacobus	Mechanical Power Transmission Equipment Manufacturing 333613	◐ LIKELY ACTIVE	13.1 KM
Coupling Corporation of America	Jacobus	Mechanical Power Transmission Equipment Manufacturing 333613	● ACTIVE	13.1 KM

Every listed plant in York County

Also at this address

No other federal record shares this street address.

Where this record comes from

6 sources hold this plant, and 13 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

EPA cross-references this facility in EIS, NCDB, NPDES, PA-EFACTS, TRIS · EPA site type STATIONARY.

• The company’s own websiteOPERATING
  first seen JUL 2026 · last seen OCT 2026
• SAM.gov entity registrationOPERATING
  Record FFKCVFLHNTE7 · first seen APR 2026 · last seen APR 2026
• OSHA injury and illness reportsOPERATING
  Record 42382 · first seen DEC 2025 · last seen DEC 2025
• EPA Toxics Release InventoryOPERATING
  first seen DEC 2023 · last seen DEC 2024
• DOL Form 5500 retirement plan filingsOPERATING
  Record 232426636|PA|17402|135 stonewood rd · first seen DEC 2024 · last seen DEC 2024
• EPA Facility Registry ServiceEXISTENCE
  Record 110000333425 · first seen JUN 2017 · last seen JUN 2017

ALSO RECORDED ASAMERICAN HYDRO CORPORATION; American Hydro Corporation, York, PA

IN YORK COUNTY7 other plants share this one’s industry (Engine, Turbine, and Power Transmission Equipment Manufacturing, NAICS 3336); 4 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

NameSOURCES DISAGREE

EPA: AMERICAN HYDRO CORPORATION · JUL 2026

SAM.gov: AMERICAN HYDRO LLC · APR 2026 · ON THIS PAGE

Street address

EPA: 135 STONEWOOD RD. · JUL 2026 · ON THIS PAGE

SAM.gov: 135 STONEWOOD RD · APR 2026 · ON THIS PAGE

City

EPA: YORK · JUL 2026 · ON THIS PAGE

SAM.gov: YORK · APR 2026 · ON THIS PAGE

State

EPA: PA · JUL 2026 · ON THIS PAGE

SAM.gov: PA · APR 2026 · ON THIS PAGE

County (FIPS code)

EPA: 42133 · SEP 2026

CoordinatesSOURCES DISAGREE

Census geocoder: 39.98816085901,-76.634042406259 · JUL 2026 · ON THIS PAGE

EPA: 39.989789,-76.628856 · JUL 2026

Employees (band)

OSHA: 100-499 · DEC 2025

Website

SAM.gov: www.ahydro.com · APR 2026

Year established

Company website: 1986 · AUG 2026

CAGE code

SAM.gov: 0GC17 · APR 2026

Retirement plan filing (Form 5500)

DOL: 151 active participants, plan year ending 2024-12-31, 7 plan(s) · DEC 2024

SAM registration expires

SAM.gov: 2027-04-20 · APR 2026

State business registrationSOURCES DISAGREE

CO SOS: American Hydro Corporation, registered with the Colorado Secretary of State; Corporation formed in Pennsylvania; registered 2019-08-06; active, annual report filed 2026-07-28 · JUL 2026

TX Comptroller: AMERICAN HYDRO CORPORATION, registered with the Texas Comptroller of Public Accounts; Corporation; revoked