Serving roughly 348,593 people in Orange County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for CITY OF ANAHEIM
1 water provider directly on file, serving roughly 348,593 people in Orange County, California.
Quick answer: CITY OF ANAHEIM has no violations on file. One reading is worth knowing about: Magnesium was measured at 27.5MG/L, among the highest of the 167 providers on file in this area. It's the most notable figure in this system's record among its 167 local peers.
Lead Summary
PFHXA
PFPEA
PFHXS
PFOA
PFOS
PFBS
Lithium
PFBA
Calcium
Magnesium
Potassium
Sodium
Hardness, Total (ASCACO3)
Alkalinity, Total
Alkalinity, Bicarbonate
Carbon, Total
Foamingagents (SURFACTANTS)
TDS
Chloride
Sulfate
Fluoride
Turbidity
Combined Uranium
pH
Manganese
Dibromochloromethane
Barium
Arsenic
Conductivity (at 25°C)
Color
Nitrate-Nitrite
Nitrate
Perfluorobutanoicacid (PFBA)
Perfluorohexanoicacid (PFHXA)
Perfluoropentanoicacid (PFPEA)
Perfluoroctanoicacid (PFOA)
Perfluoroheptanoicacid (PFHPA)
Utility CITY OF ANAHEIMPopulation served 348,593Owner Local government
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2024
Combined Uranium
Detected: 3.3 PCI/L
3/20/2025
A naturally occurring radioactive metal. Long-term exposure above the legal limit is associated with kidney effects and increased cancer risk.
Manganese
Detected: 5.3 UG/L (ppb)
3/20/2025
Mainly a taste/staining concern at typical levels; long-term neurological research at high chronic exposure is ongoing.
Barium
Detected: 150 UG/L (ppb)
3/20/2025
Arsenic
Detected: 2.1 UG/L (ppb)
3/20/2025
Occurs naturally in some groundwater. Long-term exposure above the legal limit (10 ppb) has been linked to increased cancer risk and cardiovascular disease.
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Dibromochloromethane
Detected: 1.1 UG/L (ppb)
3/20/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 117 MG/L (ppm)
7/28/2025
Sulfate
Detected: 143 MG/L (ppm)
7/28/2025
Fluoride
Detected: 0.34 MG/L (ppm)
3/20/2025
Often added deliberately for dental health; can also occur naturally.
Nitrate-Nitrite
Detected: 1.82 MG/L (ppm)
4/9/2025
Nitrate
Detected: 1.61 MG/L (ppm)
7/28/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Minerals
Everyday minerals that mainly affect taste and water hardness
Calcium
Detected: 74.1 MG/L (ppm)
3/20/2025
Magnesium
Detected: 27.5 MG/L (ppm)
3/20/2025
Potassium
Detected: 6.4 MG/L (ppm)
3/20/2025
Sodium
Detected: 98 MG/L (ppm)
3/20/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 298 MG/L (ppm)
3/20/2025
pH
Detected: 8.28 PH
3/20/2025
A measure of how acidic or basic the water is (7 is neutral). Affects taste and plumbing, not a direct health measure.
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
PFHXA
Detected: 0.0036 µg/L (ppb)
5/7/2025
PFPEA
Detected: 0.007 µg/L (ppb)
5/14/2025
PFHXS
Detected: 0.0035 µg/L (ppb)
5/7/2025
PFOA
Detected: 0.0092 µg/L (ppb)
5/5/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
PFOS
Detected: 0.0055 µg/L (ppb)
5/7/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
PFBS
Detected: 0.0034 µg/L (ppb)
5/5/2025
Lithium
Detected: 28.2967 µg/L (ppb)
10/20/2025
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
PFBA
Detected: 0.0067 µg/L (ppb)
5/7/2025
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 190 MG/L (ppm)
3/20/2025
Other
Additional substances tested that don't fit neatly into the categories above
Alkalinity, Total
Detected: 219 MG/L (ppm)
7/28/2025
Carbon, Total
Detected: 3.2 MG/L (ppm)
9/4/2025
Foamingagents (SURFACTANTS)
Detected: 0.051 MG/L (ppm)
3/20/2025
TDS
Detected: 668 MG/L (ppm)
7/28/2025
Turbidity
Detected: 0.4 NTU
3/20/2025
A measure of water cloudiness from suspended particles.
Conductivity (at 25°C)
Detected: 1000 UMHO/CM
3/20/2025
Color
Detected: 3 UNITS
3/20/2025
Perfluorobutanoicacid (PFBA)
Detected: 14.2 NG/L (ppt)
10/14/2025
Perfluorohexanoicacid (PFHXA)
Detected: 9.4 NG/L (ppt)
10/14/2025
Perfluoropentanoicacid (PFPEA)
Detected: 10.4 NG/L (ppt)
10/14/2025
Perfluoroctanoicacid (PFOA)
Detected: 2.7 NG/L (ppt)
10/14/2025
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Perfluoroheptanoicacid (PFHPA)
Detected: 2.2 NG/L (ppt)
10/14/2025
Filtration considerations: See the table below for how whole-house carbon, under-sink reverse osmosis, and under-sink carbon systems compare against what's actually on file here. These are general system types, not a specific product recommendation.