What does HWA stand for?

Hackensack Water Co. (SAUO)

Hackers with Attitudes

Hallman, W. A., St. Paul MN - STAC

Handwritten by Amanuensis (BJA)

Hawa-Air - Belgium - ICAO designator (FAAC)

Hemlock Woolly Adelgid

High Wind Watch - Telecommunications (OTD)

Hill-Williford Aviation, Inc. (SAUO)

Holloway White Allom - Building contractor - British

Home Workers Association (NTPA)

Hops Warehousing Association - British (BI)

Horror Writers of America - An association

Hot Wire Anemometer

Howa - NCIC firearms make code (NCIC)

Hwalien - Karenko - Republic of China - Seismograph station code, US Geological Survey (SEIS)

Hwa Nan Plastics Manufacturing, Taipei, Taiwan - Manufacturer code for watercraft hull identification number (USCG)

Wane - Language code (ETLW)