Serving roughly 169,455 people in Riverside County, California.
Data current as of July 2026
🔍Straight from EPA
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Results for ELSINORE VALLEY MWD
1 water provider directly on file, serving roughly 169,455 people in Riverside County, California.
Quick answer: ELSINORE VALLEY MWD has no violation currently counted toward its compliance status. EPA's record shows a Selenium violation dating to 01/01/1987 (39 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
Lithium
PFBA
Aggressive Index
Langelier Index (Source Temp.)
Calcium
Hydroxideascalciumcarbonate
Alkalinity, Total
Alkalinity, Bicarbonate
Hardness, Total (ASCACO3)
TDS
Turbidity, Field
pH, Field
Copper, Free
Conductivity (at 25°C)
Temperature (CENTIGRADE)
Magnesium
Silica
Alkalinity, Carbonate
Utility ELSINORE VALLEY MWDPopulation served 169,455Owner Local government
Older violation on record
Violations on file
Selenium
Older/archived health-based violation
Found at 1 of 1 provider
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0.0013 mg/L (ppm)
12/31/2025
Copper, Free
Detected: 11 UG/L (ppb)
9/15/2025
Minerals
Everyday minerals that mainly affect taste and water hardness
Calcium
Detected: 62 MG/L (ppm)
9/15/2025
Hydroxideascalciumcarbonate
Detected: 5 MG/L (ppm)
8/25/2025
Magnesium
Detected: 9.5 MG/L (ppm)
9/10/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 202 MG/L (ppm)
9/15/2025
pH, Field
Detected: 7.19 PH
9/29/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 22 µg/L (ppb)
12/8/2025
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
PFBA
Detected: 0.007 µg/L (ppb)
5/18/2023
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 154 MG/L (ppm)
9/15/2025
Alkalinity, Carbonate
Detected: 8 MG/L (ppm)
9/10/2025
Other
Additional substances tested that don't fit neatly into the categories above
Aggressive Index
Detected: 11.7 AGGR
9/29/2025
Langelier Index (Source Temp.)
Detected: -0.15 LANG
9/29/2025
Alkalinity, Total
Detected: 154 MG/L (ppm)
9/15/2025
TDS
Detected: 444 MG/L (ppm)
9/15/2025
Turbidity, Field
Detected: 0.27 NTU
9/29/2025
Conductivity (at 25°C)
Detected: 631 UMHO/CM
9/15/2025
Temperature (CENTIGRADE)
Detected: 21 C
9/29/2025
Silica
Detected: 14 MG/L (ppm)
5/12/2025
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.