Serving roughly 35,500 people in San Diego County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for LAKESIDE WD
1 water provider directly on file, serving roughly 35,500 people in San Diego County, California.
Quick answer: LAKESIDE WD has no violations on file. One reading is worth knowing about: Alkalinity, Total was measured at 290MG/L, among the highest of the 414 providers on file in this area. It's the most notable figure in this system's record among its 414 local peers.
Lead Summary
Lithium
PFBS
PFHXS
PFOS
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
TDS
Aggressive Index
Langelier Index (pH(s))
Magnesium
Potassium
Calcium
Sodium
Hardness, Total (ASCACO3)
Alkalinity, Total
Alkalinity, Bicarbonate
Chloride
Sulfate
Foamingagents (SURFACTANTS)
Nitrate-Nitrite
Nitrate
Turbidity
Combined Uranium
Gross Alpha Particle Activity
pH
Boron, Total
Vanadium, Total
Iron
Manganese
Barium
Selenium
Zinc
Conductivity (at 25°C)
Color
Utility LAKESIDE WDPopulation served 35,500Owner Private
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
Combined Uranium
Detected: 3.9 PCI/L
3/18/2025
A naturally occurring radioactive metal. Long-term exposure above the legal limit is associated with kidney effects and increased cancer risk.
Vanadium, Total
Detected: 5.9 UG/L (ppb)
3/18/2025
Iron
Detected: 200 UG/L (ppb)
3/18/2025
Mostly an aesthetic issue (metallic taste, staining) rather than a health concern at typical levels.
Manganese
Detected: 410 UG/L (ppb)
3/18/2025
Mainly a taste/staining concern at typical levels; long-term neurological research at high chronic exposure is ongoing.
Barium
Detected: 140 UG/L (ppb)
3/18/2025
Selenium
Detected: 9.7 UG/L (ppb)
3/18/2025
Zinc
Detected: 13 UG/L (ppb)
3/18/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
TTHM
Detected: 21 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: 5.2 UG/L (ppb)
8/11/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 2.6 UG/L (ppb)
8/11/2025
Bromodichloromethane
Detected: 6.4 UG/L (ppb)
8/11/2025
Dibromochloromethane
Detected: 6.6 UG/L (ppb)
8/11/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 230 MG/L (ppm)
3/18/2025
Sulfate
Detected: 200 MG/L (ppm)
3/18/2025
Nitrate-Nitrite
Detected: 1.2 MG/L (ppm)
3/18/2025
Nitrate
Detected: 1.2 MG/L (ppm)
3/18/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Boron, Total
Detected: 74 UG/L (ppb)
3/18/2025
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 49.7 MG/L (ppm)
3/18/2025
Potassium
Detected: 4.6 MG/L (ppm)
3/18/2025
Calcium
Detected: 105 MG/L (ppm)
3/18/2025
Sodium
Detected: 120 MG/L (ppm)
3/18/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Langelier Index (pH(s))
Detected: 0.834 LANG
3/18/2025
Hardness, Total (ASCACO3)
Detected: 466 MG/L (ppm)
3/18/2025
Gross Alpha Particle Activity
Detected: 3.12 PCI/L
3/18/2025
pH
Detected: 7.38 PH
3/18/2025
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: 16 µg/L (ppb)
4/2/2024
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
PFBS
Detected: 0.0048 µg/L (ppb)
1/8/2024
PFHXS
Detected: 0.0048 µg/L (ppb)
1/8/2024
PFOS
Detected: 0.0048 µg/L (ppb)
1/8/2024
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: 350 MG/L (ppm)
3/18/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 1 UG/L (ppb)
8/11/2025
TDS
Detected: 960 MG/L (ppm)
9/2/2025
Aggressive Index
Detected: 12.3 AGGR
3/18/2025
Alkalinity, Total
Detected: 290 MG/L (ppm)
3/18/2025
Foamingagents (SURFACTANTS)
Detected: 0.058 MG/L (ppm)
3/18/2025
Turbidity
Detected: 0.7 NTU
3/18/2025
A measure of water cloudiness from suspended particles.
Conductivity (at 25°C)
Detected: 1600 UMHO/CM
3/18/2025
Color
Detected: 5 UNITS
3/18/2025
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.