Water System Design Manual
4.3.1 Initial Screening
You should submit project reports and construction documents to the appropriate DOH regional
office (see Table 1-1). In our initial screening, we ensure the submittal is complete and confirm
that DOH approval is required.
The DOH regional office will review the submittal for the following:
A completed Project Approval Application Form (DOH 331-149). DOH uses this form
for administrative purposes. It is available on the DOH Web site (see Appendix A).
The submittal requires DOH approval (chapter 246-290 WAC). There is a fee associated
with the review. Review fees are in WAC 246-290-990.
A qualified professional engineer licensed in Washington State prepared the documents.
The engineer must seal, sign, and date the documents (WAC 246-290-040).
The DOH-assigned project identification number is on the transmittal letter or memo.
(This is for re-submittals only. DOH assigns an ID number after initial documents are
A water rights self-assessment is included, if necessary. If you already submitted a
current water rights self-assessment to DOH, note that fact in your submittal (WAC 246-
4.3.2 Water System Plan Screening
DOH expects purveyors to determine whether submitted project reports or construction
documents are adequately addressed in a WSP (WAC 246-290-110(3) and 120(3)).
In summary, the screening consists of the following questions:
Community Water Systems
Is a WSP required? All new or expanding community water systems must have an
approved, current WSP (WAC 246-290-100(2)). In general, "expanding" is any activity
that leads to an increase in service area or the number of service connections currently
authorized by DOH. For a detailed definition of "expanding," and exceptions to the
definition, see WAC 246-290-010.
Has DOH approved the WSP? Is the WSP current? "Current" means approved within the
last six years.
Does the WSP capital improvement schedule identify the project?
If the WSP is not current, is the purveyor in conformance with the DOH-approved WSP
If the answer to question 1 is "yes" and the answer to any other questions is "no" the design
engineer should contact the DOH regional office for further guidance (see Table 1-1).