Residents in parts of the Canyon Lake region have recently reported concerns about discolored tap water. The Texas Water Company (TWC) confirmed the issue this week, explaining that while the water’s appearance may be unsettling, it remains safe to drink and meets all health-related standards set by the Environmental Protection Agency (EPA) and the Texas Commission on Environmental Quality (TCEQ).
What’s Behind the Discoloration
According to TWC, the problem stems from elevated levels of naturally occurring minerals, primarily iron and manganese, in the lake. These minerals do not pose a health risk but fall under “secondary” drinking water standards because they can alter the water’s appearance. When exposed to air—such as through faucets or hydrants—the minerals oxidize and can give the water a rust-colored, yellow, brown, or reddish tint.
Recent environmental changes have amplified the issue. Heavy flooding in July disrupted the lake’s ecosystem, reducing dissolved oxygen levels and altering water chemistry, which made discoloration more noticeable.
