| Cover | Aug. 10, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 10, 2022 |
| Entity File Number | 001-32288 |
| Entity Registrant Name | NEPHROS, INC. |
| Entity Central Index Key | 0001196298 |
| Entity Tax Identification Number | 13-3971809 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 380 Lackawanna Place |
| Entity Address, City or Town | South Orang |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07079 |
| City Area Code | 201 |
| Local Phone Number | 343-5202 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock, $0.001 par value |
| Trading Symbol | NEPH |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
