Port Hueneme, CA tap water
Supplied mostly by Port Hueneme City Water Dept, plus 3 other utilities. Here's what the water means for your fish.
Disinfectant
Chloramine
Your water is treated with chloramine. Unlike chlorine, it doesn't gas off when water sits out, and many pitcher and fridge filters aren't rated to remove it. Conditioners that list chloramine on the label break it apart, which frees about 0.38 ppm of ammonia here. Some utilities switch to plain chlorine for a few weeks a year.
Safety for fish and shrimp
Ammonia (with conditioner)
Estimate0.05–0.63 ppm (Low)
Typical 0.38 ppm
This is what a conditioner frees when it breaks the chloramine apart. A cycled filter clears it within a day.
Estimated from the chloramine level City of Oxnard Water Division reports (2024).
Nitrite (NO₂)
Not detected (Low)
Not detected in testing, so any nitrite in your tank comes from the tank itself.
From California Water Board lab results (2023–2026).
Nitrate (NO₃)
Supplier's figureUp to 15 ppm (Worth knowing)
Typical 12 ppm
Water changes can't take your tank's nitrate below this level.
From the utility that supplies yours: Calleguas Municipal Water Dist and Port Hueneme Water Agency and United Wtr Cons Dist, which supplies Port Hueneme City Water Dept; City of Oxnard Water Division's 2024 water quality report; California Water Board lab results (2023–2026).
Copper at home taps
Up to 0.79 ppm (Low)
Typical 0.06 ppm
Low. Water that sits in household pipes overnight can carry more than this.
From California Water Board lab results; City of Oxnard Water Division's 2024 water quality report (2023–2026).
Chlorine or chloramine at the tap
0.2–2.6 ppm
Typical 1.6 ppm
At tap levels, chlorine and chloramine are toxic to fish, shrimp and the bacteria in a filter. Water conditioners are made for this range.
Published by your utility: City of Oxnard Water Division's 2024 water quality report.
Water chemistry
General hardness
Supplier's figure135–551 ppm
Typical 196 ppm
Moderately hard. Great for livebearers, and most community fish adapt.
From the utility that supplies yours: Calleguas Municipal Water Dist and Port Hueneme Water Agency and United Wtr Cons Dist, which supplies Port Hueneme City Water Dept; City of Oxnard Water Division's 2024 water quality report; California Water Board lab results (2023–2026).
Carbonate hardness (alkalinity)
Supplier's figure120–200 ppm
Typical 120 ppm
Strong buffering. pH stays steady and hard to lower without RO water.
From the utility that supplies yours: Calleguas Municipal Water Dist and Port Hueneme Water Agency and United Wtr Cons Dist, which supplies Port Hueneme City Water Dept; City of Oxnard Water Division's 2024 water quality report; California Water Board lab results (2023–2026).
pH
Supplier's figure7.5–8.2
Typical 7.7
Most community fish do well here. Stable water matters more than the exact number.
From the utility that supplies yours: Calleguas Municipal Water Dist and Port Hueneme Water Agency and United Wtr Cons Dist, which supplies Port Hueneme City Water Dept; City of Oxnard Water Division's 2024 water quality report; California Water Board lab results (2023–2026).
Total dissolved solids
Supplier's figure270–1200 ppm
Typical 465 ppm
A rough measure of everything dissolved in the water. RO water reads near 0, so TDS is a quick way to compare waters.
From the utility that supplies yours: Calleguas Municipal Water Dist and Port Hueneme Water Agency and United Wtr Cons Dist, which supplies Port Hueneme City Water Dept; City of Oxnard Water Division's 2024 water quality report; California Water Board lab results (2023–2026).
- Port Hueneme City Water Dept, City of Oxnard Water Division and Port Hueneme Water Agency add phosphate to protect pipes. It can feed algae in tanks without much plant growth.
- Port Hueneme City Water Dept and Port Hueneme Water Agency soften their water at the plant, so it may be softer than the local groundwater.
Who supplies Port Hueneme, CA
Port Hueneme City Water Dept
Serves 97% of residents · Buys water from Calleguas Municipal Water Dist · Chloramine
- 2024 water quality report
City of Oxnard Water Division
Serves 26% of residents · Buys water from Calleguas Municipal Water Dist · Chloramine
United Wtr Cons Dist
Serves 26% of residents · Groundwater fed by surface water · Chloramine
Port Hueneme Water Agency
Serves 25% of residents · Buys water from Calleguas Municipal Water Dist · Chloramine
Our data comes from public records and is still incomplete. Many utilities don't publish every number, so we're adding more all the time. Your city's range is a starting point: testing your own tap is the only way to know exactly what's in it.
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Compiled by Shoal & Stem from public records. Free to cite with a link.