Can a WA resident on Social Security Disablity be garnished for a defaulted student loan?

Yes, the government can garnish up to 15% of social security income. If you consolidate your loans, you can opt for an income sensitive repayment plan and possibly get a lower payment than you are paying now. I have seen payments at $0 a month. If you need help on consolidating your student loans, click on the link at he bottom of this text box.