Serving roughly 5,592 people in Kern County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
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Results for BEAR VALLEY CSD
1 water provider directly on file, serving roughly 5,592 people in Kern County, California.
Quick answer: BEAR VALLEY CSD currently has an open health-based violation on file: Lead And Copper Rule Revisions, a compliance issue since 10/17/2024. This is active, not historical — see the violation detail below for what EPA's enforcement record shows.
Lead Summary
Lithium
PFOA
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Dibromoaceticacid
Aggressive Index
Langelier Index (pH(s))
Alkalinity, Total
Alkalinity, Bicarbonate
TDS
Chloride
Sulfate
Magnesium
Potassium
Sodium
Calcium
Hardness, Total (ASCACO3)
Fluoride
Nitrate-Nitrite
Nitrate
Combined Uranium
Gross Alpha Particle Activity
pH
Chromium, Hex
Barium
Arsenic
Selenium
Zinc
Conductivity (at 25°C)
Utility BEAR VALLEY CSDPopulation served 5,592Owner Local government
Open violation on file
Violations on file
Lead And Copper Rule Revisions
Currently open health violation
Found at 1 of 1 provider
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2023
Combined Uranium
Detected: 7.5 PCI/L
6/24/2025
A naturally occurring radioactive metal. Long-term exposure above the legal limit is associated with kidney effects and increased cancer risk.
Chromium, Hex
Detected: 3.2 UG/L (ppb)
6/5/2025
Barium
Detected: 120 UG/L (ppb)
8/26/2025
Arsenic
Detected: 2.2 UG/L (ppb)
8/26/2025
Occurs naturally in some groundwater. Long-term exposure above the legal limit (10 ppb) has been linked to increased cancer risk and cardiovascular disease.
Selenium
Detected: 3.1 UG/L (ppb)
8/26/2025
Zinc
Detected: 8.1 UG/L (ppb)
8/26/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 3.9 UG/L (ppb)
8/14/2025
TTHM
Detected: 20 UG/L (ppb)
8/14/2025
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: 1.6 UG/L (ppb)
8/14/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 5.8 UG/L (ppb)
8/14/2025
Bromodichloromethane
Detected: 4.6 UG/L (ppb)
8/14/2025
Dibromochloromethane
Detected: 7.6 UG/L (ppb)
8/14/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 20 MG/L (ppm)
8/26/2025
Sulfate
Detected: 18 MG/L (ppm)
8/26/2025
Fluoride
Detected: 0.25 MG/L (ppm)
8/26/2025
Often added deliberately for dental health; can also occur naturally.
Nitrate-Nitrite
Detected: 3.9 MG/L (ppm)
8/26/2025
Nitrate
Detected: 3.8 MG/L (ppm)
9/16/2025
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: 16 MG/L (ppm)
8/26/2025
Potassium
Detected: 4.6 MG/L (ppm)
8/26/2025
Sodium
Detected: 34 MG/L (ppm)
8/26/2025
Calcium
Detected: 49 MG/L (ppm)
8/26/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Langelier Index (pH(s))
Detected: 0.32 LANG
8/26/2025
Hardness, Total (ASCACO3)
Detected: 190 MG/L (ppm)
8/26/2025
Gross Alpha Particle Activity
Detected: 6.18 PCI/L
8/26/2025
pH
Detected: 8 PH
8/26/2025
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: 32.1 µg/L (ppb)
10/9/2024
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
PFOA
Detected: 0.0057 µg/L (ppb)
4/10/2024
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 200 MG/L (ppm)
8/26/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 1.4 UG/L (ppb)
8/14/2025
Dibromoaceticacid
Detected: 2.5 UG/L (ppb)
8/14/2025
Aggressive Index
Detected: 12.4 AGGR
8/26/2025
Alkalinity, Total
Detected: 200 MG/L (ppm)
8/26/2025
TDS
Detected: 320 MG/L (ppm)
8/26/2025
Conductivity (at 25°C)
Detected: 500 UMHO/CM
8/26/2025
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.