VENTURA WWD NO. 8 - SIMI VALLEY Water Quality Report
Serving roughly 94,738 people in Ventura County, California.
Data current as of July 2026
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Results for VENTURA WWD NO. 8 - SIMI VALLEY
1 water provider directly on file, serving roughly 94,738 people in Ventura County, California.
Quick answer: VENTURA WWD NO. 8 - SIMI VALLEY has no violation currently counted toward its compliance status. EPA's record shows a Selenium violation dating to 10/28/1979 (47 years ago) — because it's more than five years past its deadline, EPA's policy no longer treats it as part of this system's current standing, though it remains on the public record.
Lead Summary
Aggressive Index
Langelier Index (pH(s))
Magnesium
Hardness, Total (ASCACO3)
Calcium
Alkalinity, Total
TDS
Sulfate
pH
Conductivity (at 25°C)
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromoform
Utility VENTURA WWD NO. 8 - SIMI VALLEYPopulation served 94,738Owner Local government
Older violation on record
Violations on file
Selenium
Older/archived health-based 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)
12/31/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 7.9 UG/L (ppb)
7/2/2025
TTHM
Detected: 14 UG/L (ppb)
7/2/2025
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: 1.4 UG/L (ppb)
7/2/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 1.8 UG/L (ppb)
1/7/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Sulfate
Detected: 120 MG/L (ppm)
9/17/2025
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 11.7 MG/L (ppm)
9/24/2025
Calcium
Detected: 54.2 MG/L (ppm)
9/24/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Langelier Index (pH(s))
Detected: -0.588 LANG
9/17/2025
Hardness, Total (ASCACO3)
Detected: 184 MG/L (ppm)
9/24/2025
pH
Detected: 6.4 PH
9/17/2025
A measure of how acidic or basic the water is (7 is neutral). Affects taste and plumbing, not a direct health measure.
Other
Additional substances tested that don't fit neatly into the categories above
Aggressive Index
Detected: 10.7 AGGR
9/17/2025
Alkalinity, Total
Detected: 150 MG/L (ppm)
9/17/2025
TDS
Detected: 330 MG/L (ppm)
9/24/2025
Conductivity (at 25°C)
Detected: 540 UMHO/CM
9/24/2025
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.