Sewer Treatment Plant

Our Wastewater Treatment Facility is located at 640 County Road.  This location is off limits and entry is prohibited to customers and citizens.  Please check in at the Public Works Office if you have business pertaining to wastewater.

As with all our services, we aim to provide reliable services within our permitted parameters.  Our facilities are highly monitored and regulated in accordance with the rules and regulations as well as the employment of full-time staff that are certified through the Oregon DEQ to operate our system. 

The city’s sewer collection system consists of approximately 28.6 miles of gravity flow collector lines as well as a separate industrial collection system.  We also have two pump lift stations to the north of town that we own and operate. 

Customers are responsible for their sewer lines from the main to their property.

Safe products that can be flushed down the toilet - With the shelves cleared of toilet paper in stores, and people possibly having to resort to using alternatives like wipes, the City of Milton-Freewater would like to kindly remind you of the only items that should ever be flushed down the toilet are the THREE Ps – Pee, Poo, and (Toilet) Paper.

Just because the package says flushable doesn’t mean it’s true.  Many items marketed as disposable and/or flushable do not degrade like toilet paper, and they wind up clogging pipes, getting stuck in pumps, and cause messy sewer backups

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We were the EXTREMELY fortunate recipients of a large Federal Grant and a State Grant as well as two low-interest loans to fund our required Wastewater Treatment Facility upgrades this past year that totaled over $4 million dollars!  These required improvements came about due to our old digester failing in the fall of 2011 and one could say we got one heck of a good deal when it came to covering the costs! 

Once wastewater is treated and piped to our land application facility that is located about five (5) miles west of town into two storage lagoons.  The treated wastewater is then land applied (irrigated) to approximately 670 acres of farm ground, owned by the city.  The city is responsible and operates in their full control all of the application of the treated wastewater, however, we lease out the farming aspect that is also highly regulated and overseen by our trained operators. 

Our program is highly regulated and our certified staff collects samples for laboratory analysis from influent, to treated waste, to pond samples to soil and crop analysis to ensure that limits do not exceed required parameters.  We also provide regular monitoring reports and analysis in accordance to our permit. 



RV Sewer Dump Station - There are two stations available year round – 640 County Road & Orchard Park 1410 South Main.