Serving roughly 43,590 people in Riverside County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
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Results for COACHELLA WATER AUTHORITY
1 water provider directly on file, serving roughly 43,590 people in Riverside County, California.
Quick answer: COACHELLA WATER AUTHORITY has no violations on file. One reading is worth knowing about: Chromium was measured at 17UG/L, among the highest of the 451 providers on file in this area. It's the most notable figure in this system's record among its 451 local peers.
Lead Summary
TTHM
Bromoform
Bromodichloromethane
Dibromochloromethane
Magnesium
Potassium
Sodium
Calcium
Silica
Alkalinity, Total
Alkalinity, Bicarbonate
Hardness, Total (ASCACO3)
TDS
Sulfate
Chloride
Fluoride
Nitrate
Turbidity
Combined Uranium
Gross Alpha Particle Activity
pH
Chromium, Hex
Chromium
Barium
Arsenic
Conductivity (at 25°C)
Utility COACHELLA WATER AUTHORITYPopulation served 43,590Owner Local government
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2023
Combined Uranium
Detected: 3.72 PCI/L
3/26/2025
A naturally occurring radioactive metal. Long-term exposure above the legal limit is associated with kidney effects and increased cancer risk.
Chromium, Hex
Detected: 16 UG/L (ppb)
4/7/2025
Chromium
Detected: 17 UG/L (ppb)
4/7/2025
Occurs in two forms — trivalent (an essential nutrient in trace amounts) and hexavalent (linked to increased cancer risk).
Barium
Detected: 34 UG/L (ppb)
3/26/2025
Arsenic
Detected: 2.5 UG/L (ppb)
3/26/2025
Occurs naturally in some groundwater. Long-term exposure above the legal limit (10 ppb) has been linked to increased cancer risk and cardiovascular disease.
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
TTHM
Detected: 0.84 UG/L (ppb)
10/6/2025
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.
Bromoform
Detected: 0.84 UG/L (ppb)
10/6/2025
Bromodichloromethane
Detected: 0.72 UG/L (ppb)
4/14/2025
Dibromochloromethane
Detected: 0.51 UG/L (ppb)
10/6/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Sulfate
Detected: 31 MG/L (ppm)
4/7/2025
Chloride
Detected: 8.1 MG/L (ppm)
4/7/2025
Fluoride
Detected: 0.57 MG/L (ppm)
3/26/2025
Often added deliberately for dental health; can also occur naturally.
Nitrate
Detected: 0.3 MG/L (ppm)
4/7/2025
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: 2.5 MG/L (ppm)
3/26/2025
Potassium
Detected: 4.2 MG/L (ppm)
3/26/2025
Sodium
Detected: 31 MG/L (ppm)
3/26/2025
Calcium
Detected: 22 MG/L (ppm)
3/26/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 65 MG/L (ppm)
3/26/2025
Gross Alpha Particle Activity
Detected: 6.69 PCI/L
3/26/2025
pH
Detected: 8 PH
3/26/2025
A measure of how acidic or basic the water is (7 is neutral). Affects taste and plumbing, not a direct health measure.
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 98 MG/L (ppm)
3/26/2025
Other
Additional substances tested that don't fit neatly into the categories above
Silica
Detected: 17 MG/L (ppm)
4/7/2025
Alkalinity, Total
Detected: 98 MG/L (ppm)
3/26/2025
TDS
Detected: 160 MG/L (ppm)
3/26/2025
Turbidity
Detected: 0.1 NTU
3/26/2025
A measure of water cloudiness from suspended particles.
Conductivity (at 25°C)
Detected: 280 UMHO/CM
3/26/2025
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.