Washington Phase II
MS4 compliance software for Washington Phase II permittees.
NPDESTracker is browser-based MS4 compliance software built around the Western Washington Phase II MS4 permit issued by the Washington State Department of Ecology. WA Ecology annual reporting, permit-cycle tracking across the five-year cycle, mobile field inspections, IDDE response, and a GIS-aware workflow that fits alongside your existing ArcGIS or QGIS deployment.
Free demo. Sample data. Browse-only. No signup.
01 · Built for the permit
Aligned to the Western Washington Phase II MS4 permit.
The product's data structures and workflows align directly to the Western Washington Phase II permit issued by Ecology. Each module maps to a Minimum Control Measure, and the annual report template reflects what gets submitted to Ecology by the March 31 deadline each year.
Public Education and Outreach
Documented events, audiences reached, and materials distributed.
Public Involvement and Participation
Public meetings, comment periods, and volunteer programs with attendance and minutes.
Illicit Discharge Detection and Elimination
Complaint intake, dry-weather screening, source tracing, and enforcement on a single thread per outfall.
Construction Site Runoff Control
Active-disturbance inspections, deficiency follow-up, and enforcement records aligned to your construction inspection cadence.
Post-Construction Stormwater Management
Live BMP inventory, annual inspections, and maintenance records for structural BMPs.
Pollution Prevention and Good Housekeeping
Municipal facility inspections, spill response, fleet operations, and staff training tied to MS4 obligations.
02 · Annual reporting
Reporting that holds up under Ecology review.
Every number in your annual MS4 report links back to its underlying record. Counts come from inspections, IDDE incidents, BMP records, and enforcement actions logged through the year, not from free-text fields you reconcile in a spreadsheet every March.
Manual overrides leave a one-line audit-log entry: user, timestamp, original value, new value, reason. When state-agency reviewers ask "what changed and why," the answer is on screen.
See how reporting works, or read the MS4 annual report checklist for Western Washington Phase II permittees.
A look at the workspace
See how a sample MS4 workspace connects sites, inspections, tasks, contacts, enforcement drafts, GIS context, and reporting evidence.
03 · Inspections
Inspections that fit the field, not the office.
Mobile-first inspection workflow built for the inspector in the truck, on phone, tablet, or browser. Photo and GPS attached to each record. Site context one tap away. Cadence-aware so overdue and due-soon items are flagged before they become audit findings.
See how inspections work, or read about stormwater inspection cadence and audit defensibility.
04 · GIS-aware throughout
Designed to coexist with your existing ArcGIS deployment.
Most Western Washington Phase II permittees already use ArcGIS Online or Enterprise as their primary GIS. NPDESTracker is built to live alongside that, not replace it. Sites, outfalls, BMPs, and incidents live on a map, color-coded by status, with the same coordinates your GIS team already maintains.
Imports standard GIS file formats (GeoJSON, shapefile). CSV exports cover supported operational records, with broader spatial-format export support available during onboarding and support requests. The full interop story is on the GIS workspace page.
05 · Pricing for Washington cities
Procurement-friendly pricing.
Three clear paths, sized to fit municipal budgets and procurement processes:
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Free interactive demo
Self-serve, browse-only, sample data. No signup or call required. Try the demo.
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Guided 60-day Evaluation at $999 for 60 days
Procurement-card-friendly pricing for Phase II permittees. Guided setup, email and ticket support, and a clean decision point at 60 days.
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Full MS4 Platform starts around $18,000 a year
Inspection Starter is $3,499 a year for focused inspection programs. Inspection Team is $9,499 a year for multi-inspector teams. Larger deployments and multi-department programs are custom-quoted around the actual program. Full pricing posture.
About the Guided 60-day Evaluation
The Guided 60-day Evaluation is at $999. It includes a guided kickoff call, an evaluation workspace configured to your permit, and direct email access through the evaluation. Convert to an annual plan at the end, or walk away with a clean export of what you logged.
Email admin@npdestracker.com with subject "Guided Evaluation Workspace inquiry" to get started.
Further reading
Practical guides for Phase II MS4 work.
- Blog MS4 annual report checklist for Western Washington Phase II permittees
- Blog Handling illicit discharges from complaint to closure: a working playbook for MS4 coordinators
- Blog Tracking post-construction BMPs without losing them: a working guide for MS4 programs
- Blog Stormwater inspection cadence: monthly, quarterly, annual, and why it matters for your audit
- Blog How to make an MS4 program audit-ready (without rewriting your spreadsheets)
- Permit Oregon Phase II MS4 software, ready for DEQ permit programs
- Permit Idaho Phase II MS4 software, framed for IPDES permittees
- Permit Colorado Phase II MS4 software, framed for CDPHE permittees
- Permit All permit pages currently covered
- Guide Understanding MS4 compliance: a plain-language overview
Built for Washington. Try it now.
Open the interactive demo, then reach out about an evaluation workspace if it looks like a fit for your program.