Serving roughly 5,900 people in San Bernardino County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
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Results for GLEN HELEN WATER SYSTEM
1 water provider directly on file, serving roughly 5,900 people in San Bernardino County, California.
Quick answer: GLEN HELEN WATER SYSTEM has no violations on file. One reading is worth knowing about: Lead Summary was measured at 0.008mg/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
Lithium
PFBS
PFHXS
PFHXA
PFPEA
Turbidity
Odor
TTHM
Chloroform
Bromodichloromethane
Dibromochloromethane
Nitrate
Magnesium
Potassium
Sodium
Hardness, Total (ASCACO3)
Calcium
Alkalinity, Total
Alkalinity, Bicarbonate
TDS
Chloride
Sulfate
Fluoride
Nitrate-Nitrite
Combined Uranium
Gross Alpha Particle Activity
pH
Chromium, Hex
Vanadium, Total
Conductivity (at 25°C)
Utility GLEN HELEN WATER SYSTEMPopulation served 5,900Owner Local government
No violations on file
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0.008 mg/L (ppm)
12/31/2024
Combined Uranium
Detected: 3.1 PCI/L
8/21/2025
A naturally occurring radioactive metal. Long-term exposure above the legal limit is associated with kidney effects and increased cancer risk.
Chromium, Hex
Detected: 2 UG/L (ppb)
3/11/2025
Vanadium, Total
Detected: 3.7 UG/L (ppb)
10/9/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
TTHM
Detected: 3.5 UG/L (ppb)
7/16/2025
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)
7/16/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromodichloromethane
Detected: 1.2 UG/L (ppb)
7/16/2025
Dibromochloromethane
Detected: 1.3 UG/L (ppb)
7/16/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Nitrate
Detected: 1.5 MG/L (ppm)
10/9/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Chloride
Detected: 10 MG/L (ppm)
10/9/2025
Sulfate
Detected: 90 MG/L (ppm)
10/9/2025
Fluoride
Detected: 0.7 MG/L (ppm)
10/9/2025
Often added deliberately for dental health; can also occur naturally.
Nitrate-Nitrite
Detected: 1.5 MG/L (ppm)
10/9/2025
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 17 MG/L (ppm)
10/9/2025
Potassium
Detected: 3.8 MG/L (ppm)
10/9/2025
Sodium
Detected: 27 MG/L (ppm)
10/9/2025
Calcium
Detected: 77 MG/L (ppm)
10/9/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 260 MG/L (ppm)
10/9/2025
Gross Alpha Particle Activity
Detected: 4.7 PCI/L
8/21/2025
pH
Detected: 7.6 PH
10/9/2025
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
Lithium
Detected: 44 µg/L (ppb)
7/31/2023
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
PFBS
Detected: 0.0032 µg/L (ppb)
7/31/2023
PFHXS
Detected: 0.0056 µg/L (ppb)
8/31/2023
PFHXA
Detected: 0.0035 µg/L (ppb)
7/31/2023
PFPEA
Detected: 0.0056 µg/L (ppb)
7/31/2023
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 250 MG/L (ppm)
10/9/2025
Other
Additional substances tested that don't fit neatly into the categories above
Turbidity
Detected: 0.48 NTU
10/9/2025
A measure of water cloudiness from suspended particles.
Odor
Detected: 1 TON
10/9/2025
Alkalinity, Total
Detected: 210 MG/L (ppm)
10/9/2025
TDS
Detected: 330 MG/L (ppm)
10/9/2025
Conductivity (at 25°C)
Detected: 640 UMHO/CM
10/9/2025
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.