Written by The Ohio Environmental Protection Agency (EPA) has officially stepped in to demand more transparency from Aqua Marion, following months of resident complaints regarding “earthy” odors and chemical tastes in the local drinking water.
In a notice released this week, the Ohio EPA confirmed it has sent a formal letter to Aqua Marion requesting detailed information on their current actions, preventive strategies, and specific sampling data. While the utility has maintained that the water is safe, the EPA is now requiring a closer look at the data behind those claims.
What the Letter Means for You
The EPA notice breaks down several key points regarding the ongoing situation:
- Official Investigation: The EPA has been “actively working” with Aqua Marion since the first major issues were reported in December 2025.
- Safety Status: According to the EPA, all current data indicates the water meets “safe drinking water standards.” However, they acknowledge the persistent taste and odor issues.
- The Culprit: The EPA identified geosmin as a major contributor. Geosmin is a naturally occurring compound that can make water taste like dirt or “pool water.” Notably, the EPA does not directly regulate geosmin, which is why the water can still be legally “safe” even if it smells or tastes unpleasant.
- Boots on the Ground: In a significant move for the community, the Ohio EPA has scheduled an on-site visit for early March. Investigators will review the plant’s operations and discuss further recommendations to prevent these recurring “events.”
A History of Frustration
This regulatory pressure follows a groundswell of local activism. Since mid-December, Marion residents have documented discolored water, ranging from yellow to green, and a smell so strong that some local businesses have switched to bottled water for cooking and coffee.
In late 2025, a community petition demanded greater transparency from Aqua Marion, and the Marion County Prosecutor’s Office has recently pushed for more aggressive state oversight.
What’s Next?
The Ohio EPA is currently reviewing “compliance data” and has recommended additional sampling to better understand why these issues have persisted for over two months. The upcoming March inspection will likely determine if Aqua Marion needs to implement more permanent operational changes or upgrades to their carbon treatment systems.
Our Commitment: At Marion Watch Investigates, we will continue to track the Ohio EPA’s findings and the results of the March on-site visit. Transparency is not optional when it comes to our community’s most basic needs.