Serving roughly 6,100 people in Ventura County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
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Results for VENTURA RIVER WATER DISTRICT
1 water provider directly on file, serving roughly 6,100 people in Ventura County, California.
Quick answer: VENTURA RIVER WATER DISTRICT has no violations on file. One reading is worth knowing about: Chloroform was measured at 27UG/L, among the highest of the 179 providers on file in this area. It's the most notable figure in this system's record among its 179 local peers.
Lead Summary
Lithium
Aggressive Index
Langelier Index (pH(s))
Magnesium
Potassium
Sodium
Hardness, Total (ASCACO3)
Calcium
Alkalinity, Total
Alkalinity, Bicarbonate
TDS
Chloride
Sulfate
Fluoride
Nitrate
Nitrate-Nitrite
pH, Field
Boron, Total
Chromium
Zinc
Conductivity (at 25°C)
Totalhaloaceticacids (HAA5)
TTHM
Lead
Chloroform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Bromoform
Monochloroaceticacid
Copper, Free
Utility VENTURA RIVER WATER DISTRICTPopulation served 6,100Owner 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)
12/31/2025
Chromium
Detected: 12 UG/L (ppb)
3/19/2025
Occurs in two forms — trivalent (an essential nutrient in trace amounts) and hexavalent (linked to increased cancer risk).
Zinc
Detected: 20 UG/L (ppb)
3/19/2025
Lead
Detected: 8 UG/L (ppb)
6/30/2025
A metal that can leach from old pipes, solder, and fixtures. Current medical guidance holds there is no truly safe level of lead exposure, especially for children and pregnant women.
Copper, Free
Detected: 85 UG/L (ppb)
7/1/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 32 UG/L (ppb)
9/16/2025
TTHM
Detected: 38 UG/L (ppb)
9/16/2025
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: 27 UG/L (ppb)
9/16/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromodichloromethane
Detected: 9 UG/L (ppb)
9/16/2025
Dibromochloromethane
Detected: 2 UG/L (ppb)
9/16/2025
Bromoform
Detected: 2 UG/L (ppb)
9/16/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 26 MG/L (ppm)
3/19/2025
Sulfate
Detected: 273 MG/L (ppm)
3/19/2025
Fluoride
Detected: 0.6 MG/L (ppm)
3/19/2025
Often added deliberately for dental health; can also occur naturally.
Nitrate
Detected: 1.8 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.
Nitrate-Nitrite
Detected: 0.4 MG/L (ppm)
3/19/2025
Boron, Total
Detected: 600 UG/L (ppb)
3/19/2025
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 27 MG/L (ppm)
3/19/2025
Potassium
Detected: 2 MG/L (ppm)
3/19/2025
Sodium
Detected: 43 MG/L (ppm)
3/19/2025
Calcium
Detected: 104 MG/L (ppm)
3/19/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Langelier Index (pH(s))
Detected: 0.1 LANG
3/19/2025
Hardness, Total (ASCACO3)
Detected: 371 MG/L (ppm)
3/19/2025
pH, Field
Detected: 7.3 PH
3/19/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 22 µg/L (ppb)
10/3/2023
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 230 MG/L (ppm)
3/19/2025
Other
Additional substances tested that don't fit neatly into the categories above
Aggressive Index
Detected: 12 AGGR
3/19/2025
Alkalinity, Total
Detected: 190 MG/L (ppm)
3/19/2025
TDS
Detected: 590 MG/L (ppm)
3/19/2025
Conductivity (at 25°C)
Detected: 871 UMHO/CM
3/19/2025
Dichloroaceticacid
Detected: 13 UG/L (ppb)
9/16/2025
Trichloroaceticacid
Detected: 15 UG/L (ppb)
9/16/2025
Monochloroaceticacid
Detected: 4 UG/L (ppb)
9/16/2025
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.