Serving roughly 277,668 people in San Diego County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
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Results for HELIX WATER DISTRICT
1 water provider directly on file, serving roughly 277,668 people in San Diego County, California.
Quick answer: HELIX WATER DISTRICT has no violations on file and no single reading stands out against its peers (414 other providers in this area). It serves roughly 277,668 people, and the full breakdown below reflects everything EPA and California have on record for it.
Lead Summary
Lithium
Silica
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Dibromoaceticacid
Trichloroaceticacid
Utility HELIX WATER DISTRICTPopulation served 277,668Owner 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)
12/31/2024
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 4.9 UG/L (ppb)
8/11/2025
TTHM
Detected: 18.9 UG/L (ppb)
8/11/2025
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: 6.64 UG/L (ppb)
8/11/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 1.41 UG/L (ppb)
8/11/2025
Bromodichloromethane
Detected: 5.93 UG/L (ppb)
8/11/2025
Dibromochloromethane
Detected: 4.92 UG/L (ppb)
8/11/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 25 µg/L (ppb)
10/7/2024
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
Other
Additional substances tested that don't fit neatly into the categories above
Silica
Detected: 9.3 MG/L (ppm)
8/11/2025
Dichloroaceticacid
Detected: 3.2 UG/L (ppb)
8/11/2025
Dibromoaceticacid
Detected: 1.7 UG/L (ppb)
8/11/2025
Trichloroaceticacid
Detected: 1.8 UG/L (ppb)
8/11/2025
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.