Problems We Found In Orange's Tap Water


Kezia Snipe  |  Hydroviv Research Analyst

For Hydroviv’s assessment of Orange's tap water, we aggregated water quality test data from the City of Orange Water Division, the city’s water provider, and the U.S. Environmental Protection Agency (EPA), as well as from samples that we collect and analyze. We cross reference these data with toxicity studies in scientific and medical literature, and look at upcoming regulatory changes. The water filters that we build for people who live in Orange are optimized with these figures in mind.

Source Of Orange Drinking Water

Orange’s water comes from three sources. The primary source is groundwater drawn from 14 municipal wells drilled about 1000 feet into the Santa Ana River Aquifer. Well water goes directly into the distribution system, is disinfected with chlorine and meets all state regulations. The second source is water imported by the Metropolitan Water District, from the Colorado River and from northern California (San Francisco-San Joaquin Bay Delta). Metropolitan water is filtered and disinfected with chloramines. Orange also purchases a small amount of water from the Serrano Water District. This source is primarily treated surface water, but also includes local treated well water.

Chromium 6 Levels In Orange Drinking Water

Chromium 6 is a highly toxic metal that is not regulated by the EPA. In recent years, Orange’s tap water has averaged 320 parts per trillion for Chromium 6. While they are in compliance with nonexistent federal and very loose state regulations, these levels are 16 times higher than the concentration determined to have negligible impact on cancer risk.

Disinfection Byproducts (DBPs) In Orange Drinking Water

DBPs are a category of emerging contaminants that form when chlorine-based disinfectants react with naturally-occurring organic matter. Although these chemicals are not currently regulated very well, the EPA  website discloses that high levels of disinfection byproducts in drinking water are are associated with an increased risk of bladder cancer, as well as kidney, liver, and central nervous system problems.

Still Have Questions About Orange Tap Water Or Water Quality In General?

Hydroviv is a water filtration company that uses water quality data to optimize water filters for each customer's water. The contaminants that we list above are what we consider to be major “points of emphasis” that we use to build water filters that are built specifically for Orange, but our filters provide broad protection against a wide range of additional contaminants found in Orange's tap water.

If you’re interested in learning more about water filters that have been optimized for Orange's water, or just have questions about water quality in general, feel free to visit, reach out by email ( or through our live chat. We also frequently post water-related news on Twitter or Facebook. We pride ourselves in being a reputable source of information on water quality, and your questions will be answered by scientists, not salespeople (we don't have any salespeople on staff).

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