EXHIBIT 1





                  CONSENT OF INDEPENDENT ACCOUNTANTS

    We consent to the incorporation by reference in the registration
statement of the Ionics Section 401(k) Stock Savings Plan on Form S-8
(Registration No. 33-2092) of our report dated May 26, 1995 on our
audits of the financial statements of the Ionics Section 401(k) Stock
Savings Plan as of December 31, 1994, which report is included in this
Annual Report on Form 11-K of the Plan which is being filed as Exhibit
13(b) to the Annual Report on Form 10-K of Ionics, Incorporated for
the year ended December 31, 1994.



                                          /s/Coopers & Lybrand L.L.P.

Boston, Massachusetts
June 23, 1995

























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