Eatonville STP
370 Mashell Ave S, Eatonville, WA 98328 · Pierce County · Publicly Owned Treatment Works
- Average flow
- 0.24 MGD
- Design flow
- 1.07 MGD
- NPDES permit
- WA0037231
- Administratively continued
- Permit expires
- April 2014
- Population served
- 3,177
- CWNS 2022
Eatonville STP is a publicly owned wastewater treatment works in Eatonville, Pierce County, Washington treating an average of 0.24 million gallons per day against a permitted design capacity of 1.07 MGD, serving about 3,177 residents. It discharges under NPDES permit WA0037231 (administratively continued), which expires in April 2014, with 0 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Eatonville STP.
Available with a free Klarifi account
See the full treatment train at Eatonville STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Eatonville
Eatonville's capital improvement plan lists 6 water, sewer and wastewater line items worth $7M starting 2025–2027. The largest budgeted items are shown here.
All water and sewer capital projects in Eatonville →
| Project | Budget | Years |
|---|---|---|
| New Water Source | $2,680,000 | 2027–2029 |
| West Eatonville Sewer Extension | $1,530,000 | 2026–2028 |
| Upgrade Pressure Sys. In Dwtn Comm. Area | $1,195,000 | 2026–2027 |
| Water Main Replace (Wash Ave & Center St. E) | $970,000 | 2026–2028 |
| Deep Aquifer Study for new H20 source | $320,000 | 2026–2026 |
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
1 verified contact for Eatonville STP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Eatonville STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Washington
Yelm · 17 mi away
—
Orting · 17 mi away
0.91 MGD
Carbonado · 18 mi away
0.03 MGD
Puyallup · 24 mi away
5.2 MGD
Enumclaw · 26 mi away
1.85 MGD
University Place · 27 mi away
22.49 MGD
Mossyrock · 29 mi away
0.02 MGD
Chehalis · 30 mi away
0.07 MGD
Eatonville 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 October 26, 2026; facility record last updated April 12, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms