LOCKEFORD COMMUNITY SERV. DIST. Water Quality Report
Serving roughly 3,572 people in San Joaquin County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
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Results for LOCKEFORD COMMUNITY SERV. DIST.
1 water provider directly on file, serving roughly 3,572 people in San Joaquin County, California.
Quick answer: LOCKEFORD COMMUNITY SERV. DIST. has no violations on file. One reading is worth knowing about: Langelier Index (pH(s)) was measured at 1LANG, among the highest of the 571 providers on file in this area. It's the most notable figure in this system's record among its 571 local peers.
Lead Summary
Aggressive Index
Langelier Index (pH(s))
Magnesium
Potassium
Sodium
Hardness, Total (ASCACO3)
Calcium
Alkalinity, Total
Alkalinity, Bicarbonate
TDS
Sulfate
Chloride
Fluoride
Nitrate-Nitrite
Nitrate
Turbidity
pH, Field
Vanadium, Total
Iron
Manganese
Chromium
Arsenic
Conductivity (at 25°C)
Utility LOCKEFORD COMMUNITY SERV. DIST.Population served 3,572Owner 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
Vanadium, Total
Detected: 16 UG/L (ppb)
2/19/2025
Iron
Detected: 110 UG/L (ppb)
8/5/2025
Mostly an aesthetic issue (metallic taste, staining) rather than a health concern at typical levels.
Manganese
Detected: 1.4 UG/L (ppb)
2/19/2025
Mainly a taste/staining concern at typical levels; long-term neurological research at high chronic exposure is ongoing.
Chromium
Detected: 11 UG/L (ppb)
2/19/2025
Occurs in two forms — trivalent (an essential nutrient in trace amounts) and hexavalent (linked to increased cancer risk).
Arsenic
Detected: 3 UG/L (ppb)
2/19/2025
Occurs naturally in some groundwater. Long-term exposure above the legal limit (10 ppb) has been linked to increased cancer risk and cardiovascular disease.
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Sulfate
Detected: 3.8 MG/L (ppm)
2/19/2025
Chloride
Detected: 20 MG/L (ppm)
2/19/2025
Fluoride
Detected: 0.2 MG/L (ppm)
2/19/2025
Often added deliberately for dental health; can also occur naturally.
Nitrate-Nitrite
Detected: 1.6 MG/L (ppm)
2/19/2025
Nitrate
Detected: 1.6 MG/L (ppm)
2/19/2025
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: 11 MG/L (ppm)
2/19/2025
Potassium
Detected: 5 MG/L (ppm)
2/19/2025
Sodium
Detected: 17 MG/L (ppm)
2/19/2025
Calcium
Detected: 18 MG/L (ppm)
2/19/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Langelier Index (pH(s))
Detected: 1 LANG
2/19/2025
Hardness, Total (ASCACO3)
Detected: 90.2 MG/L (ppm)
2/19/2025
pH, Field
Detected: 7.2 PH
2/19/2025
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 120 MG/L (ppm)
2/19/2025
Other
Additional substances tested that don't fit neatly into the categories above
Aggressive Index
Detected: 10.9 AGGR
2/19/2025
Alkalinity, Total
Detected: 100 MG/L (ppm)
2/19/2025
TDS
Detected: 200 MG/L (ppm)
2/19/2025
Turbidity
Detected: 0.1 NTU
2/19/2025
A measure of water cloudiness from suspended particles.
Conductivity (at 25°C)
Detected: 272 UMHO/CM
2/19/2025
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.