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EPA SDWIS ยท Kings County, California

AVENAL, CITY OF Water Quality Report

Serving roughly 13,696 people in Kings County, California.

Data current as of July 2026
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Results for AVENAL, CITY OF

1 water provider directly on file, serving roughly 13,696 people in Kings County, California.

Quick answer: AVENAL, CITY OF currently has an open health-based violation on file: Lead And Copper Rule Revisions, a compliance issue since 10/17/2024. This is active, not historical โ€” see the violation detail below for what EPA's enforcement record shows.
Utility AVENAL, CITY OF Population served 13,696 Owner Local government
Open violation on file
Also serves AVENAL

Violations on file

TTHM
Older/archived health-based violation
Found at 1 of 1 provider
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.
Lead And Copper Rule Revisions
Currently open health 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 mg/L (ppm)
12/31/2025
Copper, Free
Detected: 55 UG/L (ppb)
7/24/2025
Chromium, Hex
Detected: 0.1 UG/L (ppb)
10/14/2025
Aluminum
Detected: 130 UG/L (ppb)
10/14/2025
Iron
Detected: 110 UG/L (ppb)
10/14/2025
Mostly an aesthetic issue (metallic taste, staining) rather than a health concern at typical levels.
Manganese
Detected: 17 UG/L (ppb)
10/14/2025
Mainly a taste/staining concern at typical levels; long-term neurological research at high chronic exposure is ongoing.
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 23 UG/L (ppb)
10/14/2025
TTHM
Detected: 85 UG/L (ppb)
10/14/2025
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: 1.9 UG/L (ppb)
10/14/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 37 UG/L (ppb)
10/14/2025
Bromodichloromethane
Detected: 11 UG/L (ppb)
10/14/2025
Dibromochloromethane
Detected: 35 UG/L (ppb)
10/14/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 150 MG/L (ppm)
10/14/2025
Sulfate
Detected: 45 MG/L (ppm)
10/14/2025
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 15 MG/L (ppm)
10/14/2025
Calcium
Detected: 17 MG/L (ppm)
10/14/2025
Sodium
Detected: 85 MG/L (ppm)
10/14/2025
Potassium
Detected: 4 MG/L (ppm)
10/14/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Langelier Index (pH(s))
Detected: -1.4 LANG
10/14/2025
Hardness, Total (ASCACO3)
Detected: 100 MG/L (ppm)
10/14/2025
pH
Detected: 7.1 PH
10/14/2025
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: 73 MG/L (ppm)
10/14/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 1.5 UG/L (ppb)
10/14/2025
Trichloroaceticacid
Detected: 1.4 UG/L (ppb)
10/14/2025
Monobromoaceticacid
Detected: 1.9 UG/L (ppb)
10/14/2025
Dibromoaceticacid
Detected: 19 UG/L (ppb)
10/14/2025
Aggressive Index
Detected: 10.6 AGGR
10/14/2025
Alkalinity, Total
Detected: 73 MG/L (ppm)
10/14/2025
TDS
Detected: 390 MG/L (ppm)
10/14/2025
Conductivity (at 25ยฐC)
Detected: 710 UMHO/CM
10/14/2025
Carbon, Total
Detected: 2.3 MG/L (ppm)
9/9/2025
Turbidity
Detected: 0.54 NTU
10/14/2025
A measure of water cloudiness from suspended particles.
Color
Detected: 5 UNITS
10/14/2025
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
DichloroaceticacidPartialYesPartial
TrichloroaceticacidPartialYesPartial
MonobromoaceticacidPartialYesPartial
DibromoaceticacidPartialYesPartial
Copper, FreePartialYesPartial
Aggressive IndexPartialYesPartial
Alkalinity, TotalPartialYesPartial
TDSPartialYesPartial
ChloridePartialYesPartial
SulfatePartialYesPartial
Chromium, HexPartialYesPartial
AluminumPartialYesPartial
Conductivity (at 25ยฐC)PartialYesPartial
Carbon, TotalPartialYesPartial
IronPartialYesPartial
ManganesePartialYesPartial
ColorPartialYesPartial
Coliform Bacteria (indicator)NoYesNo
Langelier Index (pH(s))NoNoNo
MagnesiumNoPartialNo
CalciumNoPartialNo
SodiumNoPartialNo
PotassiumNoPartialNo
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?