Exhibit 31  CERTIFICATION ACCOMPANYING PERIODIC REPORT
PURSUANT TO SECTION 302
OF THE SARBANES-OXLEY ACT OF 2002  I, W. Brian Matsuyama, certify that:  1.     I have reviewed thisannual report
on Form 10-K of Cascade Natural Gas Corporation;  2.     Based on my knowledge, this
report does not contain any untrue statement of a material fact or omit to
state a material fact necessary to make the statements made, in light of the
circumstances under which such statements were made, not misleading with
respect to the period covered by this report;  3.     Based on my knowledge, the financial statements, and other
financial information included in this report, fairly present in all material
respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this report;  4.     The registrants other
certifying officer(s) and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e)
and 15d-15(e)) for the registrant and have:  a.     Designed such disclosure controls and
procedures, or caused such disclosure controls and procedures to be designed
under our supervision, to ensure that material information relating to the
registrant, including its consolidated subsidiaries, is made known to us by
others within those entities, particularly during the period in which this
report is being prepared; and  b.     Evaluated the effectiveness of the
registrants disclosure controls and procedures and presented in this report
our conclusions about the effectiveness of the disclosure controls and
procedures, as of the end of the period covered by this report based on such
evaluation; and  c.     Disclosed in this report any change in the
registrants internal control over financial reporting that occurred during the
registrants most recent fiscal quarter (the registrants fourth fiscal quarter
in the case of an annual report) that has materially affected, or is reasonably
likely to materially affect, the registrants internal control over financial
reporting.  5.     The registrants other certifying officer(s) and I have
disclosed, based on our most recent evaluation of internal control over
financial reporting, to the registrants auditors and the audit committee of
the registrants board of directors (or persons performing the equivalent
functions):  a.     All significant deficiencies and material
weaknesses in the design or operation of internal control over financial
reporting which are reasonably likely to adversely affect the registrants
ability to record, process, summarize and report financial information; and  b.     Any fraud, whether or not material, that
involves management or other employees who have a significant role in the
registrants internal control over financial reporting.   Date:
  November 29, 2004By:
  /s/ W. Brian MatsuyamaW. Brian MatsuyamaVice Chairman, President and Chief Executive Officer(Principal Executive Officer)


I, J. D. Wessling, certify
that:  1.     I have reviewed this annual report
on Form 10-K of Cascade Natural Gas Corporation;  2.     Based on my knowledge, this
report does not contain any untrue statement of a material fact or omit to
state a material fact necessary to make the statements made, in light of the
circumstances under which such statements were made, not misleading with
respect to the period covered by this report;  3.     Based on my knowledge, the financial statements, and other
financial information included in this report, fairly present in all material
respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this report;  4.     The registrants other
certifying officer(s) and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e)
and 15d-15(e)) for the registrant and have:  a.     Designed such disclosure controls and
procedures, or caused such disclosure controls and procedures to be designed
under our supervision, to ensure that material information relating to the
registrant, including its consolidated subsidiaries, is made known to us by
others within those entities, particularly during the period in which this
report is being prepared; and  b.     Evaluated the effectiveness of the registrants
disclosure controls and procedures and presented in this report our conclusions
about the effectiveness of the disclosure controls and procedures, as of the
end of the period covered by this report based on such evaluation; and  c.     Disclosed in this report any change in the
registrants internal control over financial reporting that occurred during the
registrants most recent fiscal quarter (the registrants fourth fiscal quarter
in the case of an annual report) that has materially affected, or is reasonably
likely to materially affect, the registrants internal control over financial
reporting.  5.     The registrants other
certifying officer(s) and I have disclosed, based on our most recent evaluation
of internal control over financial reporting, to the registrants auditors and
the audit committee of the registrants board of directors (or persons
performing the equivalent functions):  a.     All significant deficiencies and material
weaknesses in the design or operation of internal control over financial reporting
which are reasonably likely to adversely affect the registrants ability to
record, process, summarize and report financial information; and  b.     Any fraud, whether or not material, that
involves management or other employees who have a significant role in the
registrants internal control over financial reporting.   Date:
  November 29, 2004By:
  /s/ J. D. WesslingJ. D. WesslingChief Financial Officer(Principal Financial Officer)