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EPA SDWIS · Riverside County, California

BLYTHE - CITY OF Water Quality Report

Serving roughly 9,798 people in Riverside County, California.

Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
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Results for BLYTHE - CITY OF

1 water provider directly on file, serving roughly 9,798 people in Riverside County, California.

Quick answer: BLYTHE - CITY OF has no violations on file. One reading is worth knowing about: TTHM was measured at 80UG/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.
Utility BLYTHE - CITY OF Population served 9,798 Owner Local government
No violations on file
Also serves BLYTHE

Contaminants found

Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0.0055 mg/L (ppm)
12/31/2025
Copper Summary
Detected: 2.1 mg/L (ppm)
12/31/2022
Iron
Detected: 71 UG/L (ppb)
8/6/2025
Mostly an aesthetic issue (metallic taste, staining) rather than a health concern at typical levels.
Manganese
Detected: 350 UG/L (ppb)
8/6/2025
Mainly a taste/staining concern at typical levels; long-term neurological research at high chronic exposure is ongoing.
Barium
Detected: 64 UG/L (ppb)
2/5/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 13 UG/L (ppb)
7/16/2025
TTHM
Detected: 80 UG/L (ppb)
7/16/2025
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.
Chloroform
Detected: 20 UG/L (ppb)
7/16/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 5.5 UG/L (ppb)
7/16/2025
Bromodichloromethane
Detected: 29 UG/L (ppb)
7/16/2025
Dibromochloromethane
Detected: 26 UG/L (ppb)
7/16/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 160 MG/L (ppm)
2/5/2025
Sulfate
Detected: 470 MG/L (ppm)
2/5/2025
Fluoride
Detected: 0.17 MG/L (ppm)
2/5/2025
Often added deliberately for dental health; can also occur naturally.
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 42 MG/L (ppm)
2/5/2025
Sodium
Detected: 160 MG/L (ppm)
2/5/2025
Calcium
Detected: 160 MG/L (ppm)
2/5/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 590 MG/L (ppm)
2/5/2025
pH
Detected: 7.9 PH
2/5/2025
A measure of how acidic or basic the water is (7 is neutral). Affects taste and plumbing, not a direct health measure.
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 62 µg/L (ppb)
12/3/2024
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 270 MG/L (ppm)
2/5/2025
Other
Additional substances tested that don't fit neatly into the categories above
TDS
Detected: 1200 MG/L (ppm)
8/6/2025
Dichloroaceticacid
Detected: 4.9 UG/L (ppb)
7/16/2025
Trichloroaceticacid
Detected: 3.7 UG/L (ppb)
7/16/2025
Dibromoaceticacid
Detected: 4.8 UG/L (ppb)
7/16/2025
Alkalinity, Total
Detected: 270 MG/L (ppm)
2/5/2025
Adsorbableorganicfluorine
Detected: 3900 NG/L (ppt)
2/3/2025
Turbidity
Detected: 2.7 NTU
2/5/2025
A measure of water cloudiness from suspended particles.
Hexachlorocyclopentadiene
Detected: 0.09 UG/L (ppb)
5/20/2025
Conductivity (at 25°C)
Detected: 1700 UMHO/CM
2/5/2025
Color
Detected: 15 UNITS
2/5/2025
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.
Contaminant Whole-House Carbon Under-Sink RO Under-Sink Carbon
Total Trihalomethanes (TTHM)YesYesYes
Haloacetic Acids (HAA5)YesYesYes
ChloroformYesYesYes
Chlorine / TasteYesYesYes
Sediment / TurbidityYesYesYes
TrichloroethyleneYesYesYes
TetrachloroethyleneYesYesYes
cis-1,2-DichloroethyleneYesYesYes
1,1-DichloroethyleneYesYesYes
BromoformYesYesYes
BromodichloromethaneYesYesYes
DibromochloromethaneYesYesYes
1,1,2-TrichloroethaneYesYesYes
Vinyl ChlorideYesYesYes
Carbon TetrachlorideYesYesYes
BenzeneYesYesYes
TolueneYesYesYes
XyleneYesYesYes
Totalhaloaceticacids (HAA5)YesYesYes
LeadPartialYesPartial
ArsenicPartialYesPartial
Chromium-6 (Hexavalent)PartialYesPartial
CopperPartialYesPartial
Combined UraniumPartialYesPartial
PFOAPartialYes*Partial
PFOSPartialYes*Partial
NitratePartialYesPartial
Combined RadiumPartialYesPartial
LithiumPartialYes*Partial
TDSPartialYesPartial
IronPartialYesPartial
ManganesePartialYesPartial
DichloroaceticacidPartialYesPartial
TrichloroaceticacidPartialYesPartial
DibromoaceticacidPartialYesPartial
Alkalinity, TotalPartialYesPartial
ChloridePartialYesPartial
SulfatePartialYesPartial
FluoridePartialYesPartial
AdsorbableorganicfluorinePartialYesPartial
HexachlorocyclopentadienePartialYesPartial
BariumPartialYesPartial
Conductivity (at 25°C)PartialYesPartial
ColorPartialYesPartial
Coliform Bacteria (indicator)NoYesNo
MagnesiumNoPartialNo
SodiumNoPartialNo
CalciumNoPartialNo
Alkalinity, BicarbonateNoNoNo
Hardness, Total (ASCACO3)NoNoNo
pHNoNoNo

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What is TTHM? Understanding EPA Violation Status Is Chromium-6 Dangerous? Whole-House vs. Under-Sink Filtration Lead and Copper in Drinking Water What is PFAS? Arsenic and Uranium Explained Nitrate and Fluoride Explained Water Hardness, pH, and Turbidity What is Coliform Bacteria?