Rustlewood STP
Shelton, WA · Mason County · Publicly Owned Treatment Works
- Average flow
- 0.000000013 MGD
- Design flow
- —
- NPDES permit
- WA0038075
- Effective
- Permit expires
- June 2029
- Population served
- 144
- CWNS 2022
Rustlewood STP is a publicly owned wastewater treatment works in Shelton, Mason County, Washington treating an average of 0.000000013 million gallons per day, serving about 144 residents. It discharges under NPDES permit WA0038075 (effective), which expires in June 2029, with 4 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Shelton
Shelton's capital improvement plan lists 17 water, sewer and wastewater line items worth $41M starting 2023–2027. The largest budgeted items are shown here.
All water and sewer capital projects in Shelton →
| Project | Budget | Years |
|---|---|---|
| North diversion lift station and forcemain to WRP Design and Construction. | $10,489,000 | 2023–2025 |
| WRP Phase 2 Design & Construction Capacity Expansion to 1.57 mgd | $8,416,000 | 2025–2027 |
| MBR Filter Replacements, #1 and #2 | $5,005,000 | 2027–2027 |
| Headworks Capacity Upgrades | $3,757,000 | 2026–2026 |
| Basin 4 I&I Reduction Design and Construction | $3,680,000 | 2024–2025 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
Decision-makers at Rustlewood STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Washington
Olympia · 16 mi away
—
University Place · 17 mi away
17.07 MGD
Port Orchard · 23 mi away
—
Port Orchard · 26 mi away
—
Littlerock · 29 mi away
0.04 MGD
Seattle · 30 mi away
—
Bainbridge Island · 31 mi away
—
Rochester · 34 mi away
—
Rustlewood STP: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated September 3, 2024.