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Frequently Asked Questions for Water in Pasadena, California
Is Pasadena tap water safe to drink?
Yes, Pasadena’s tap water meets all state and federal safety standards. However, some contaminants have been detected, including arsenic (up to 7 ppb), hexavalent chromium (1.3–8.6 ppb), aluminum (up to 115 ppb), nitrates (up to 7.5 ppm), and uranium (up to 3 pCi/L). While these levels are within regulatory limits, they may exceed Environmental Working Group (EWG) guidelines.
Is Pasadena’s water hard?
Yes, Pasadena’s water is classified as hard to very hard, with hardness levels ranging from 102–370 ppm (6–22 gpg), depending on the source. Hard water can cause scale buildup on fixtures, dry skin, and reduced appliance efficiency.
Does Pasadena’s water contain PFAS (“Forever Chemicals”)?
Recent testing under the UCMR 5 monitoring program did not detect PFAS compounds like PFOS or PFOA above reporting limits. However, because PFAS contamination can vary, many residents choose reverse osmosis or advanced carbon filtration systems for added protection.
Does Pasadena add fluoride to its water?
Yes, Pasadena’s water contains fluoride at an average of 0.7 ppm, which is within state and federal guidelines for preventing tooth decay.
What other contaminants are in Pasadena’s water?
The 2024 water quality report detected several trace contaminants, including:
- Aluminum (up to 115 ppb)
- Arsenic (up to 7 ppb)
- Hexavalent Chromium (1.3–8.6 ppb)
- Nitrates (up to 7.5 ppm)
- TTHMs (up to 66 μg/L)
- HAA5 (up to 36 μg/L)
- Uranium (up to 3 pCi/L)
- TDS (up to 580 ppm)
Where does Pasadena get its water?
Pasadena’s water supply comes from a blend of local groundwater sources and imported water from the Metropolitan Water District (MWD), which delivers water from the Colorado River and Northern California.
What is the pH level of Pasadena water?
The pH of Pasadena’s water ranges from 7.2 to 8.5, which is considered neutral to slightly alkaline.
Should I use a water filter or softener in Pasadena?
Yes, due to hard water and the presence of trace contaminants, many residents benefit from whole-house water filters, reverse osmosis systems, and water softeners to enhance water quality, taste, and appliance longevity.
Does Pasadena water have a high total dissolved solids (TDS) level?
Yes, Pasadena’s TDS levels range between 357–580 ppm, which is above California’s aesthetic standard of 500 ppm. Reverse osmosis is recommended for reducing TDS for better-tasting drinking water.
Where can I get a local water quality report?
You can access the latest Pasadena Water Quality Report from the City of Pasadena Water and Power Department here.
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We haven’t had any issues with service or the system. The price is great. We look forward to continuing service with them for many more years!!
The water tastes great, pure and is most definitely refreshing. I highly recommend them.
Very professional installation, they gave me a great deal and soft water for the whole house it’s amazing.
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