ARROWHEAD REGIONAL MEDICAL CENTER Water Quality Report
Serving roughly 7,000 people in San Bernardino County, California.
Data current as of July 2026
🔍Straight from EPA
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Results for ARROWHEAD REGIONAL MEDICAL CENTER
1 water provider directly on file, serving roughly 7,000 people in San Bernardino County, California.
Quick answer: ARROWHEAD REGIONAL MEDICAL CENTER has no violations on file. One reading is worth knowing about: Nitrate was measured at 11MG/L, among the highest of the 669 providers on file in this area. It's the most notable figure in this system's record among its 669 local peers.
Lead Summary
TTHM
Chloroform
Bromodichloromethane
Dibromochloromethane
Copper, Free
Nitrate
Chromium, Hex
Perchlorate
Utility ARROWHEAD REGIONAL MEDICAL CENTERPopulation served 7,000Owner Local government
No violations on file
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2027
Copper, Free
Detected: 58 UG/L (ppb)
9/25/2025
Chromium, Hex
Detected: 0.34 UG/L (ppb)
3/10/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
TTHM
Detected: 3.4 UG/L (ppb)
7/10/2025
A group of disinfection byproducts formed when chlorine reacts with organic matter. Long-term exposure above the legal limit has been linked to increased cancer risk in some studies.
Chloroform
Detected: 1 UG/L (ppb)
7/10/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromodichloromethane
Detected: 1.1 UG/L (ppb)
7/10/2025
Dibromochloromethane
Detected: 1.3 UG/L (ppb)
7/10/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Nitrate
Detected: 11 MG/L (ppm)
7/10/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Other
Additional substances tested that don't fit neatly into the categories above
Perchlorate
Detected: 14 UG/L (ppb)
7/10/2025
Can occur naturally or from industrial/military sources; may interfere with thyroid function at elevated levels.
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.