Drinking water quality · 2020

· Verified

What's in Covina Irrigating Co. — West Covina, Ca, CA tap water

64 contaminants were measured in the Covina Irrigating Co. — West Covina, Ca, CA water system's 2020 annual report. Each is shown below against its federal limit.

Reporting year
2020
Contaminants measured
64
Over federal limit
0
Approaching the limit
0
Service area
CA
state-level CCR
Source
Utility CCR
All within federal limits. Every measured contaminant in this report is below its federal threshold.

Other

ContaminantMeasuredStatus
Chlorine Total3 mg/LAverageSurface WaterWithin the limit
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avg2.7 mg/Lrange1.9–3.4 mg/L85% of limit
  • Surface WaterPlant
    avg3 mg/Lrange1.98–3.38 mg/L85% of limit
Chlorine Free1.4 mg/LAverageGround WaterWithin the limit
ChlordaneNot detected ng/LAverageSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detected ng/LrangeNot detected ng/L0% of limit
  • Ground WaterPlant
    avgNot detected ng/LrangeNot detected ng/L0% of limit
ChromiumNot detected ug/LAverageSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
Dehp0RangeSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg0range0
  • Ground WaterPlant
    avgNot detectedrangeNot detected
DiquatNot detected ug/LAverageSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
Radium 226 228Not detected pCi/LRangeGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected pCi/LrangeNot detected pCi/L0% of limit
  • Surface WaterPlant
    avgNot detected pCi/LrangeNot detected pCi/L0% of limit

Inorganic chemicals

ContaminantMeasuredStatus
NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits.3.9 mg/LAverageGround WaterWithin the limit
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avg3.9 mg/Lrange0.7–4.5 mg/L45% of limit
  • Surface WaterPlant
    avg0.39 mg/Lrange0.39 mg/L4% of limit
FluorideA mineral often added to drinking water to help prevent tooth decay.0.31 mg/LAverageGround WaterWithin the limit
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avg0.31 mg/Lrange0.31 mg/L8% of limit
  • Surface WaterPlant
    avg0.13 mg/Lrange0.13 mg/L3% of limit
AsbestosNot detected MFLAverageGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected MFLrangeNot detected MFL0% of limit
  • Surface WaterPlant
    avgNot detected MFLrangeNot detected MFL0% of limit
CyanideNot detected ug/LAverageGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
NitriteA compound from fertilizer runoff, sewage, and erosion of natural deposits.Not detected mg/LRangeGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected mg/LrangeNot detected mg/L0% of limit
  • Surface WaterPlant
    avgNot detected mg/LrangeNot detected mg/L0% of limit
ChlorideA naturally occurring salt compound.83 mg/LAverageSurface WaterDetected — no federal limit
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg83 mg/Lrange71–95 mg/L
  • Ground WaterPlant
    avg44 mg/Lrange36–52 mg/L
SulfateA naturally occurring mineral from rock and soil.54 mg/LAverageSurface WaterDetected — no federal limit
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg54 mg/Lrange47–61 mg/L
  • Ground WaterPlant
    avg26.5 mg/Lrange20–33 mg/L

Metals

ContaminantMeasuredStatus
ArsenicA naturally occurring element that also enters water from industry and agriculture.3.2 ug/LAverageGround WaterWithin the limit
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avg3.2 ug/Lrange2.2–4 ug/L40% of limit
  • Surface WaterPlant
    avg2.8 ug/Lrange1.7–3.4 ug/L34% of limit
AntimonyNot detected ug/LRangeGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
BariumA metal from erosion of natural deposits and industrial discharge.Not detected ug/LAverageGround WaterWithin the limit
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ug/Lrange0–140 ug/L7% of limit
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
BerylliumNot detected ug/LRangeSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
CadmiumNot detected ug/LRangeGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium.Not detected ug/LAverageGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
CopperA metal that enters water from corroding household plumbing.Not detected ug/LAverageSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures.Not detected ug/LAverageGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
ManganeseA naturally occurring metal from soil and rock.Not detected ug/LAverageGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
MercuryA toxic metal from erosion of natural deposits and industrial runoff.Not detected ug/LAverageSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
NickelA metal from natural deposits and industrial discharge.Not detected ug/LAverageSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
SeleniumA trace element from natural deposits and industrial discharge.Not detected ug/LAverageGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
StrontiumNot detected pCi/LRangeSurface WaterNone detected
ThalliumNot detected ug/LAverageSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
VanadiumNot detected ug/LRangeSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
ZincA naturally occurring metal that can also enter water from corroding pipes.Not detected mg/LAverageSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detected mg/LrangeNot detected mg/L
  • Ground WaterPlant
    avgNot detected mg/LrangeNot detected mg/L
AluminumA common element sometimes used as a treatment coagulant.82 ug/LAverageSurface WaterDetected — no federal limit
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg82 ug/Lrange32–400 ug/L
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
BoronA naturally occurring element from rock and soil.190 ug/LAverageSurface WaterDetected — no federal limit
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg190 ug/Lrange180–200 ug/L
  • Ground WaterPlant
    avg110 ug/Lrange110 ug/L
CalciumA naturally occurring mineral that contributes to water hardness.51 mg/LAverageGround WaterDetected — no federal limit
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avg51 mg/Lrange49–52 mg/L
  • Surface WaterPlant
    avg25 mg/Lrange24–25 mg/L
IronA naturally occurring metal common in groundwater.Not detected ug/LAverageGround WaterDetected — no federal limit
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ug/Lrange0–42 ug/L
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
MagnesiumA naturally occurring mineral that contributes to water hardness.9.6 mg/LAverageGround WaterDetected — no federal limit
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg9 mg/Lrange6.3–12 mg/L
  • Ground WaterPlant
    avg9.6 mg/Lrange9.4–9.8 mg/L
PotassiumA naturally occurring mineral from rock and soil.3.4 mg/LAverageGround WaterDetected — no federal limit
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avg3.4 mg/Lrange3.3–3.5 mg/L
  • Surface WaterPlant
    avg2.8 mg/Lrange2.5–3 mg/L
SodiumA naturally occurring salt component.64 mg/LAverageSurface WaterDetected — no federal limit
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg64 mg/Lrange63–65 mg/L
  • Ground WaterPlant
    avg37 mg/Lrange36–37 mg/L

Disinfection byproducts

ContaminantMeasuredStatus
TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter.23 ug/LAverageSurface WaterWithin the limit
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg23 ug/Lrange0–34 ug/L43% of limit
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter.9.4 ug/LAverageSurface WaterWithin the limit
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg9.4 ug/Lrange0–13 ug/L22% of limit
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
NDMANot detected ng/LRangeGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ng/LrangeNot detected ng/L
  • Surface WaterPlant
    avgNot detected ng/LrangeNot detected ng/L
PerchlorateA chemical used in rocket fuel and fireworks that can also form during disinfection.Not detected ug/LAverageGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L

Radionuclides

ContaminantMeasuredStatus
Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances.3.3 pCi/LAverageSurface WaterWithin the limit
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg3.3 pCi/Lrange3.3 pCi/L22% of limit
  • Ground WaterPlant
    avgNot detected pCi/LrangeNot detected pCi/L0% of limit
Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances.Not detected pCi/LRangeSurface WaterNone detected
UraniumA naturally occurring radioactive metal from erosion of natural deposits.2.5 pCi/LAverageSurface WaterDetected — no federal limit
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg2.5 pCi/Lrange2.5 pCi/L
  • Ground WaterPlant
    avg1.5 pCi/Lrange1.5 pCi/L

Physical & aggregate

ContaminantMeasuredStatus
TurbidityA measure of cloudiness from suspended particles in the water.0.09 NTUAverageSurface WaterWithin the limit
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg0.09 NTUrange0.05–0.19 NTU19% of limit
  • Ground WaterPlant
    avgNot detected NTUrangeNot detected NTU0% of limit
ColorA measure of visible tint in the water.Not detectedRangeSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detectedrangeNot detected
  • Ground WaterPlant
    avgNot detectedrangeNot detected
OdorA measure of detectable smell in the water.Not detectedRangeGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detectedrangeNot detected
  • Surface WaterPlant
    avgNot detectedrangeNot detected
AlkalinityA measure of the water's capacity to neutralize acids.165 mg/LAverageGround WaterDetected — no federal limit
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avg165 mg/Lrange150–180 mg/L
  • Surface WaterPlant
    avg98 mg/Lrange86–110 mg/L
HardnessA measure of dissolved calcium and magnesium minerals.165 mg/LAverageGround WaterDetected — no federal limit
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avg165 mg/Lrange160–170 mg/L
  • Surface WaterPlant
    avg99 mg/Lrange87–110 mg/L
pHA measure of how acidic or basic the water is.8.1AverageSurface WaterDetected — no federal limit
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg8.1range8.1–8.2
  • Ground WaterPlant
    avg7.6range7.6
Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content.545 uS/cmAverageSurface WaterDetected — no federal limit
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg545 uS/cmrange500–590 uS/cm
  • Ground WaterPlant
    avg515 uS/cmrange490–540 uS/cm
TOCTotal organic carbon — a measure of organic material dissolved in the water.2 mg/LAverageSurface WaterDetected — no federal limit
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avg2 mg/Lrange1.7–2.2 mg/L
  • Ground WaterPlant
    avgNot detected mg/LrangeNot detected mg/L
Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts.305 mg/LAverageGround WaterDetected — no federal limit
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avg305 mg/Lrange290–320 mg/L
  • Surface WaterPlant
    avg220 mg/Lrange290–320 mg/L

Microbial

ContaminantMeasuredStatus
Total ColiformA group of bacteria used as an indicator of overall water-system sanitation.Not detectedAverageSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detectedrangeNot detected
  • Ground WaterPlant
    avgNot detectedrangeNot detected

PFAS ("forever chemicals")

ContaminantMeasuredStatus
PFASNot detected ng/LAverageGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ng/LrangeNot detected ng/L
  • Surface WaterPlant
    avgNot detected ng/LrangeNot detected ng/L
PFOAPerfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products.Not detected ng/LAverageSurface WaterWithin the limit
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ng/Lrange0–2.4 ng/L60% of limit
  • Surface WaterPlant
    avgNot detected ng/LrangeNot detected ng/L0% of limit
PFOSPerfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings.Not detected ng/LAverageSurface WaterWithin the limit
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ng/Lrange0–3.2 ng/L80% of limit
  • Surface WaterPlant
    avgNot detected ng/LrangeNot detected ng/L0% of limit

VOCs & pesticides

ContaminantMeasuredStatus
1,2,3-TCPNot detected ng/LRangeSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detected ng/LrangeNot detected ng/L
  • Ground WaterPlant
    avgNot detected ng/LrangeNot detected ng/L
AtrazineA widely used agricultural herbicide that reaches water through runoff.Not detected ug/LAverageSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
DichlorodifluoromethaneNot detected ug/LAverageGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
MTBENot detected ug/LAverageSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
SimazineNot detected ug/LRangeGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
TetrachloroethyleneAn industrial solvent (PCE) used in dry cleaning and degreasing.Not detected ug/LAverageSurface WaterNone detected
+By source (2)Surface Water, Ground Water
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
TrichloroethyleneAn industrial solvent (TCE) used in metal degreasing.Not detected ug/LRangeGround WaterNone detected
+By source (2)Ground Water, Surface Water
  • Ground WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
Source: Covina Irrigating Co. — West Covina, Ca, CA's 2020 Consumer Confidence Report — the annual drinking-water report every U.S. utility is required to publish. The numbers on this page are the utility's own. A water-quality report covers an entire service area, not a single address.

People also ask about Covina Irrigating Co. — West Covina, Ca, CA's water

+Is Covina Irrigating Co. — West Covina, Ca, CA tap water safe to drink in 2020?

Every one of the 64 contaminants measured in Covina Irrigating Co. — West Covina, Ca, CA's 2020 Consumer Confidence Report is below its federal limit. "Safe" under the EPA's drinking-water standards is health-based, not aesthetic — but by those standards, no measured contaminant in this report exceeds its enforceable threshold. Individual health concerns (e.g. immunocompromised, infant, pregnancy) may warrant additional filtering regardless of compliance.

+What contaminants are in Covina Irrigating Co. — West Covina, Ca, CA tap water?

64 contaminants were measured in Covina Irrigating Co. — West Covina, Ca, CA's 2020 Consumer Confidence Report, spanning metals, physical & aggregate, and inorganic chemicals. 18 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.

+Where does the data on this page come from?

Every value is transcribed from Covina Irrigating Co. — West Covina, Ca, CA's 2020 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.

+How often is Covina Irrigating Co. — West Covina, Ca, CA's water quality data updated?

Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2020 report; a new report will replace it once the utility publishes its next annual update.

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