YUCAIPA VALLEY WATER DISTRICT Water Quality Report
Serving roughly 52,010 people in San Bernardino County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for YUCAIPA VALLEY WATER DISTRICT
1 water provider directly on file, serving roughly 52,010 people in San Bernardino County, California.
Quick answer: YUCAIPA VALLEY WATER DISTRICT has no violations on file. One reading is worth knowing about: Copper Summary was measured at 30mg/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
Copper Summary
PFPEA
PFOA
PFBS
PFHXA
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Dibromoaceticacid
Magnesium
Potassium
Sodium
Hardness, Total (ASCACO3)
Calcium
Alkalinity, Total
Alkalinity, Bicarbonate
TDS
Chloride
Sulfate
Fluoride
Nitrate-Nitrite
Nitrate
pH
Odor
Vanadium, Total
Chromium, Hex
Arsenic
Conductivity (at 25°C)
Foamingagents (SURFACTANTS)
Utility YUCAIPA VALLEY WATER DISTRICTPopulation served 52,010Owner 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)
12/31/2023
Copper Summary
Detected: 30 mg/L (ppm)
12/31/1998
Vanadium, Total
Detected: 5.8 UG/L (ppb)
8/19/2025
Chromium, Hex
Detected: 0.41 UG/L (ppb)
2/19/2025
Arsenic
Detected: 7.9 UG/L (ppb)
8/19/2025
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
Totalhaloaceticacids (HAA5)
Detected: 4.3 UG/L (ppb)
8/5/2025
TTHM
Detected: 33.6 UG/L (ppb)
8/5/2025
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: 2.1 UG/L (ppb)
8/5/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 12.9 UG/L (ppb)
8/5/2025
Bromodichloromethane
Detected: 5.7 UG/L (ppb)
8/5/2025
Dibromochloromethane
Detected: 12.9 UG/L (ppb)
8/5/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 6.4 MG/L (ppm)
8/19/2025
Sulfate
Detected: 8.9 MG/L (ppm)
8/19/2025
Fluoride
Detected: 0.21 MG/L (ppm)
8/19/2025
Often added deliberately for dental health; can also occur naturally.
Nitrate-Nitrite
Detected: 2.2 MG/L (ppm)
8/19/2025
Nitrate
Detected: 2.3 MG/L (ppm)
10/21/2025
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
Magnesium
Detected: 13 MG/L (ppm)
8/19/2025
Potassium
Detected: 2.1 MG/L (ppm)
8/19/2025
Sodium
Detected: 21 MG/L (ppm)
8/19/2025
Calcium
Detected: 39 MG/L (ppm)
8/19/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 150 MG/L (ppm)
8/19/2025
pH
Detected: 8.2 PH
8/19/2025
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
PFPEA
Detected: 0.0069 µg/L (ppb)
4/24/2024
PFOA
Detected: 0.0042 µg/L (ppb)
10/10/2023
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
PFBS
Detected: 0.01 µg/L (ppb)
4/24/2024
PFHXA
Detected: 0.0058 µg/L (ppb)
4/24/2024
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 220 MG/L (ppm)
8/19/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 1.4 UG/L (ppb)
8/5/2025
Trichloroaceticacid
Detected: 3 UG/L (ppb)
5/6/2025
Dibromoaceticacid
Detected: 2.9 UG/L (ppb)
8/5/2025
Alkalinity, Total
Detected: 180 MG/L (ppm)
8/19/2025
TDS
Detected: 160 MG/L (ppm)
8/19/2025
Odor
Detected: 1 TON
8/19/2025
Conductivity (at 25°C)
Detected: 360 UMHO/CM
8/19/2025
Foamingagents (SURFACTANTS)
Detected: 0.12 MG/L (ppm)
8/19/2025
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.