10/20/2026
The Garrett County Department of Public Works wants to update Friendsville residents about recent testing for Disinfection Byproducts (DBPs) in the drinking water. DBPs form when chlorine — which is used to kill harmful germs — reacts with natural material found in river water.
During the most recent quarterly test, one of the regulated DBPs, called Total Trihalomethanes (TTHM), measured 0.086 mg/L. The limit set by the Environmental Protection Agency (EPA) is 0.080 mg/L, so this test result was slightly above the allowable level.
What does this mean?
- This is not an emergency. If it were, you would have been notified immediately.
- Health concerns related to DBPs come from long-term exposure over many years, not from a single test result or short-term exposure.
- Friendsville has no history of long-term DBP issues, and we continue to monitor water quality every quarter.
Why did this happen?
- Friendsville uses river water, and DBP levels can rise when:
- Water temperatures increase (especially in summer)
- The river has more natural organic material
- Flows are low or conditions change quickly
What is being done to fix this?
- The County is taking several steps to reduce DBPs and improve water quality:
Short-Term Improvements (Underway Now)
- Adjusting chlorine levels and system flushing
- Installing new greensand and granular activated carbon (GAC) filters
> Greensand improves water quality before disinfection
> GAC removes organic material that forms DBPs
Long-Term Solution (In Progress)
The County is working toward switching Friendsville from river water to a groundwater source, which naturally forms far fewer DBPs. This includes:
- A new water treatment plant
- A new groundwater well source
- A new water storage tank
- Improvements to the distribution system
Funding is being pursued through MDE, USDA, and other programs to support these upgrades.
Our Commitment
We want residents to feel confident in their drinking water. Garrett County is committed to improving the system, meeting all state and federal standards, and keeping the community informed every step of the way.
If you have questions, please contact:
Garrett County Department of Public Works – Utilities Division
Phone: 301-334-6983
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