whatsinmywater.co
EPA SDWIS · San Bernardino County, California

Is LOMA LINDA, CA Tap Water Safe?

LOMA LINDA is served by 1 water provider on file with the EPA.

Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for LOMA LINDA, CA

1 water provider on file serving this city.

Quick answer: LOMA LINDA's water has no violations on file and no single reading stands out against its peers (1 other providers in this area). It serves roughly 25,129 people, and the full breakdown below reflects everything EPA and California have on record for it.

Contaminants found

Metals
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: General system types, not a specific product recommendation.
Contaminant Whole-House Carbon Under-Sink RO Under-Sink Carbon
Total Trihalomethanes (TTHM)YesYesYes
Haloacetic Acids (HAA5)YesYesYes
ChloroformYesYesYes
Chlorine / TasteYesYesYes
Sediment / TurbidityYesYesYes
TrichloroethyleneYesYesYes
TetrachloroethyleneYesYesYes
cis-1,2-DichloroethyleneYesYesYes
1,1-DichloroethyleneYesYesYes
BromoformYesYesYes
BromodichloromethaneYesYesYes
DibromochloromethaneYesYesYes
1,1,2-TrichloroethaneYesYesYes
Vinyl ChlorideYesYesYes
Carbon TetrachlorideYesYesYes
BenzeneYesYesYes
TolueneYesYesYes
XyleneYesYesYes
LeadPartialYesPartial
ArsenicPartialYesPartial
Chromium-6 (Hexavalent)PartialYesPartial
CopperPartialYesPartial
Combined UraniumPartialYesPartial
PFOAPartialYes*Partial
PFOSPartialYes*Partial
NitratePartialYesPartial
Combined RadiumPartialYesPartial
Alkalinity, TotalPartialYesPartial
SulfatePartialYesPartial
ChloridePartialYesPartial
1, 2-Dibromo-3-ChloropropanePartialYesPartial
PerchloratePartialYesPartial
Foamingagents (SURFACTANTS)PartialYesPartial
TDSPartialYesPartial
FluoridePartialYesPartial
Nitrate-NitritePartialYesPartial
Combined UraniumPartialYesPartial
OdorPartialYesPartial
Vanadium, TotalPartialYesPartial
Conductivity (at 25°C)PartialYesPartial
Coliform Bacteria (indicator)NoYesNo
PotassiumNoPartialNo
SodiumNoPartialNo
CalciumNoPartialNo
Hardness, Total (ASCACO3)NoNoNo
Alkalinity, BicarbonateNoNoNo
Gross Alpha Particle ActivityNoNoNo
pHNoNoNo

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What is TTHM? Understanding EPA Violation Status Is Chromium-6 Dangerous? Whole-House vs. Under-Sink Filtration Lead and Copper in Drinking Water What is PFAS? Arsenic and Uranium Explained Nitrate and Fluoride Explained Water Hardness, pH, and Turbidity What is Coliform Bacteria?