Serving roughly 25,129 people in San Bernardino County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for LOMA LINDA, CITY OF
1 water provider directly on file, serving roughly 25,129 people in San Bernardino County, California.
Quick answer: LOMA LINDA, CITY OF has no violations on file. One reading is worth knowing about: 1, 2-Dibromo-3-Chloropropane was measured at 0.12UG/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
Dibromochloromethane
Bromoform
Alkalinity, Total
Sulfate
Chloride
Nitrate
1, 2-Dibromo-3-Chloropropane
Trichloroethylene
1, 1-Dichloroethylene
Perchlorate
Arsenic
Potassium
Sodium
Calcium
Hardness, Total (ASCACO3)
Alkalinity, Bicarbonate
Foamingagents (SURFACTANTS)
TDS
Fluoride
Nitrate-Nitrite
Combined Uranium
Gross Alpha Particle Activity
pH
Odor
Vanadium, Total
Conductivity (at 25°C)
Utility LOMA LINDA, CITY OFPopulation served 25,129Owner Local government
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2023
Arsenic
Detected: 5.8 UG/L (ppb)
3/12/2025
Occurs naturally in some groundwater. Long-term exposure above the legal limit (10 ppb) has been linked to increased cancer risk and cardiovascular disease.
Combined Uranium
Detected: 9.4 PCI/L
1/22/2025
A naturally occurring radioactive metal. Long-term exposure above the legal limit is associated with kidney effects and increased cancer risk.
Vanadium, Total
Detected: 10 UG/L (ppb)
8/4/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
TTHM
Detected: 1 UG/L (ppb)
3/10/2025
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.
Dibromochloromethane
Detected: 1 UG/L (ppb)
3/10/2025
Bromoform
Detected: 2.5 UG/L (ppb)
3/10/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Sulfate
Detected: 38 MG/L (ppm)
8/4/2025
Chloride
Detected: 24 MG/L (ppm)
8/4/2025
Nitrate
Detected: 1.2 MG/L (ppm)
10/27/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Fluoride
Detected: 1 MG/L (ppm)
8/4/2025
Often added deliberately for dental health; can also occur naturally.
Nitrate-Nitrite
Detected: 1.1 MG/L (ppm)
8/4/2025
Minerals
Everyday minerals that mainly affect taste and water hardness
Potassium
Detected: 1.7 MG/L (ppm)
8/4/2025
Sodium
Detected: 67 MG/L (ppm)
8/4/2025
Calcium
Detected: 19 MG/L (ppm)
8/4/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 48 MG/L (ppm)
8/4/2025
Gross Alpha Particle Activity
Detected: 3 PCI/L
10/6/2025
pH
Detected: 8.2 PH
8/4/2025
A measure of how acidic or basic the water is (7 is neutral). Affects taste and plumbing, not a direct health measure.
VOCs (Volatile Organic Compounds)
Industrial solvents and fuel-related chemicals that evaporate easily
Trichloroethylene
Detected: 9.4 UG/L (ppb)
3/3/2025
1, 1-Dichloroethylene
Detected: 0.55 UG/L (ppb)
3/3/2025
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 140 MG/L (ppm)
8/4/2025
Other
Additional substances tested that don't fit neatly into the categories above
Alkalinity, Total
Detected: 120 MG/L (ppm)
8/4/2025
1, 2-Dibromo-3-Chloropropane
Detected: 0.12 UG/L (ppb)
3/3/2025
Perchlorate
Detected: 19 UG/L (ppb)
3/3/2025
Can occur naturally or from industrial/military sources; may interfere with thyroid function at elevated levels.
Foamingagents (SURFACTANTS)
Detected: 0.11 MG/L (ppm)
8/4/2025
TDS
Detected: 240 MG/L (ppm)
8/4/2025
Odor
Detected: 1 TON
8/4/2025
Conductivity (at 25°C)
Detected: 410 UMHO/CM
8/4/2025
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.