RANCHO CALIFORNIA WATER DISTRICT Water Quality Report
Serving roughly 146,147 people in Riverside County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
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Results for RANCHO CALIFORNIA WATER DISTRICT
1 water provider directly on file, serving roughly 146,147 people in Riverside County, California.
Quick answer: RANCHO CALIFORNIA WATER DISTRICT has no violations on file. One reading is worth knowing about: Fluoride was measured at 2MG/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
Lithium
PFOA
PFOS
PFPEA
PFBS
PFHXA
PFBA
PFHPA
PFHXS
Fluoride
Arsenic
Magnesium
Potassium
Sodium
Calcium
Alkalinity, Total
Alkalinity, Bicarbonate
Hardness, Total (ASCACO3)
TDS
Sulfate
Chloride
Nitrate
Utility RANCHO CALIFORNIA WATER DISTRICTPopulation served 146,147Owner 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)
12/31/2025
Arsenic
Detected: 1.9 UG/L (ppb)
10/8/2025
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
Fluoride
Detected: 2 MG/L (ppm)
10/23/2025
Often added deliberately for dental health; can also occur naturally.
Sulfate
Detected: 67 MG/L (ppm)
5/8/2025
Chloride
Detected: 130 MG/L (ppm)
5/8/2025
Nitrate
Detected: 2.6 MG/L (ppm)
5/8/2025
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: 0.53 MG/L (ppm)
7/15/2025
Potassium
Detected: 1.1 MG/L (ppm)
7/15/2025
Sodium
Detected: 97 MG/L (ppm)
7/15/2025
Calcium
Detected: 9.9 MG/L (ppm)
7/15/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 75 MG/L (ppm)
5/8/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 24 µg/L (ppb)
12/13/2023
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
PFOA
Detected: 0.0054 µg/L (ppb)
2/12/2024
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
PFOS
Detected: 0.008 µg/L (ppb)
2/12/2024
One of two PFAS with an enforceable federal limit (4 ppt) since 2024.
PFPEA
Detected: 0.0045 µg/L (ppb)
9/28/2023
PFBS
Detected: 0.0035 µg/L (ppb)
9/20/2023
PFHXA
Detected: 0.0044 µg/L (ppb)
9/28/2023
PFBA
Detected: 0.0078 µg/L (ppb)
9/20/2023
PFHPA
Detected: 0.0033 µg/L (ppb)
3/23/2023
PFHXS
Detected: 0.005 µg/L (ppb)
9/28/2023
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 87 MG/L (ppm)
5/8/2025
Other
Additional substances tested that don't fit neatly into the categories above
Alkalinity, Total
Detected: 87 MG/L (ppm)
5/8/2025
TDS
Detected: 570 MG/L (ppm)
9/25/2025
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.