Serving roughly 7,429 people in San Joaquin County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
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Results for ESCALON, CITY OF
1 water provider directly on file, serving roughly 7,429 people in San Joaquin County, California.
Quick answer: ESCALON, CITY OF has no violation currently counted toward its compliance status. EPA's record shows a Nitrate violation dating to 11/01/1984 (42 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
Potassium
Sodium
Hardness, Total (ASCACO3)
Calcium
Alkalinity, Total
Alkalinity, Bicarbonate
TDS
Sulfate
Chloride
Fluoride
Nitrate-Nitrite
Nitrate
Turbidity
pH, Field
Vanadium, Total
Manganese
Chromium
Barium
Arsenic
Copper, Free
Conductivity (at 25°C)
Utility ESCALON, CITY OFPopulation served 7,429Owner Local government
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2023
Vanadium, Total
Detected: 28 UG/L (ppb)
1/8/2025
Manganese
Detected: 0.7 UG/L (ppb)
3/11/2025
Mainly a taste/staining concern at typical levels; long-term neurological research at high chronic exposure is ongoing.
Chromium
Detected: 11 UG/L (ppb)
3/11/2025
Occurs in two forms — trivalent (an essential nutrient in trace amounts) and hexavalent (linked to increased cancer risk).
Barium
Detected: 125 UG/L (ppb)
3/11/2025
Arsenic
Detected: 3 UG/L (ppb)
3/11/2025
Occurs naturally in some groundwater. Long-term exposure above the legal limit (10 ppb) has been linked to increased cancer risk and cardiovascular disease.
Copper, Free
Detected: 188 UG/L (ppb)
1/8/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Sulfate
Detected: 13.8 MG/L (ppm)
3/11/2025
Chloride
Detected: 9 MG/L (ppm)
3/11/2025
Fluoride
Detected: 0.2 MG/L (ppm)
3/11/2025
Often added deliberately for dental health; can also occur naturally.
Nitrate-Nitrite
Detected: 6.4 MG/L (ppm)
3/11/2025
Nitrate
Detected: 3.6 MG/L (ppm)
10/22/2025
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: 16 MG/L (ppm)
3/11/2025
Potassium
Detected: 4 MG/L (ppm)
3/11/2025
Sodium
Detected: 20 MG/L (ppm)
3/11/2025
Calcium
Detected: 30 MG/L (ppm)
3/11/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Langelier Index (pH(s))
Detected: -0.3 LANG
3/11/2025
Hardness, Total (ASCACO3)
Detected: 141 MG/L (ppm)
3/11/2025
pH, Field
Detected: 7.54 PH
3/11/2025
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 200 MG/L (ppm)
3/11/2025
Other
Additional substances tested that don't fit neatly into the categories above
Aggressive Index
Detected: 11.6 AGGR
3/11/2025
Alkalinity, Total
Detected: 160 MG/L (ppm)
3/11/2025
TDS
Detected: 250 MG/L (ppm)
3/11/2025
Turbidity
Detected: 0.1 NTU
3/11/2025
A measure of water cloudiness from suspended particles.
Conductivity (at 25°C)
Detected: 407 UMHO/CM
3/11/2025
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.