The Water Map

Drinking water quality · 2024

· Verified

What's in Ucmr5 — Bakersfield, City of (2024), CA tap water

40 contaminants were measured in the Ucmr5 — Bakersfield, City of (2024), CA water system's 2024 annual report. Each is shown below against its federal limit.

Browse the mapFull source report ↗
Reporting year
2024
Contaminants measured
40
Over federal limit
0
Approaching the limit
1
Service area
CA
state-level CCR
Source
Utility CCR
View document ↗
Approaching the limit (≥ 80%)

PFAS — EPA UCMR5 (2023–2025)

1 PFAS compound above EPA limits in Ucmr5 — Bakersfield, City of (2024), CA

About this data

The EPA finalized the first-ever federal drinking-water limits for six PFAS compounds in April 2024. These numbers come straight from EPA's UCMR5 lab dataset — every U.S. system serving more than 3,300 people tested every PFAS sample at an entry point to its distribution system. PFAS not listed below were either tested and not detected, or not yet sampled.

PFOS (Perfluorooctane sulfonic acid)

● Over EPA limit (1.9×)
Measured 7.6 ng/LEPA limit 4 ng/LSample year 2025Samples 3 detect / 42
Source:EPA UCMR5· 2025 · 42 samples · 3 detected↗

PFNA (Perfluorononanoic acid)

● Below limit
Measured 4.7 ng/LEPA limit 10 ng/LSample year 2025Samples 1 detect / 42
Source:EPA UCMR5· 2025 · 42 samples · 1 detected↗

PFHxS (Perfluorohexane sulfonic acid)

● Below limit
Measured 4.2 ng/LEPA limit 10 ng/LSample year 2025Samples 1 detect / 42
Source:EPA UCMR5· 2025 · 42 samples · 1 detected↗
See every U.S. water system over the EPA PFAS limit →
PWSID CA1510031 · Source: EPA UCMR5. Limits per EPA's April 2024 PFAS National Primary Drinking Water Regulation. PFAS values reported in nanograms per liter (ng/L) — note that 1 ng/L = 1 part per trillion.

Where your water comes from · EPA SDWIS

Ucmr5 — Bakersfield, City of (2024), CA's drinking water comes from ground water, drawn from 63 sources.

Source

63ground water
  • WELL CBK 36-01 - BEFORE_GAC-TCP
  • WELL CBK 31-01 - BEFORE GAC
  • WELL CBK 20-01 - RAW
  • WELL CBK 21-01 - BEFORE_GAC-TCP
  • + 59 more

Treatment

68treatment plants
  • WELL CBK 18-01 - CL2
  • WELL CBK 19-01 - AFTER_GAC-TCP
  • WELL CBK 20-01 - CL2
  • + 65 more

Distribution

0storage units

Also buys water from CWS - NORTH GARDEN, KERN COUNTY WATER AGENCY.

Source: EPA SDWIS facilities inventory. Methodology.

Compliance history

Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.

  • Maximum contaminant level exceededHealth-based
    2 violations on record · most recent Nov 1992
    resolved

Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗

Disinfection byproducts

ContaminantMeasuredStatus
TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter.64 ug/LAverageAnnual AverageApproaching the limit
HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter.40 ug/LAverageAnnual AverageWithin the limit
PerchlorateA chemical used in rocket fuel and fireworks that can also form during disinfection.2 mg/LAverageKcwaDetected — no federal limit
+By source (3)— Kcwa, Groundwater, Surface Water
  • KcwaZone
    avg2 mg/Lrange2 mg/L
  • GroundwaterPlant
    avgNot detected mg/LrangeNot detected mg/L
  • Surface WaterPlant
    avgNot detected mg/LrangeNot detected mg/L

Other

ContaminantMeasuredStatus
Chlorine Free1.2 mg/LAverageSystem-wideWithin the limit

Inorganic chemicals

ContaminantMeasuredStatus
NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits.1.5 mg/LAverageGroundwaterWithin the limit
+By source (3)— Groundwater, Kcwa, Surface Water
  • GroundwaterPlant
    avg1.5 mg/Lrange0–6.7 mg/L67% of limit
  • KcwaZone
    avg0.18 mg/Lrange0–0.63 mg/L6% of limit
  • Surface WaterPlant
    avgNot detected mg/LrangeNot detected mg/L0% of limit
FluorideA mineral often added to drinking water to help prevent tooth decay.0.2 mg/LAverageSurface WaterWithin the limit
+By source (3)— Groundwater, Kcwa, Surface Water
  • GroundwaterPlant
    avgNot detected mg/Lrange0–0.22 mg/L6% of limit
  • KcwaZone
    avg0.13 mg/Lrange0–0.2 mg/L5% of limit
  • Surface WaterPlant
    avg0.2 mg/Lrange0.2 mg/L5% of limit

Physical & aggregate

ContaminantMeasuredStatus
TurbidityA measure of cloudiness from suspended particles in the water.0.111 NTUMaximumSurface WaterWithin the limit
+By source (2)— Surface Water, Kcwa
  • Surface WaterPlant
    11% of limit
  • KcwaPlant
    7% of limit
AlkalinityA measure of the water's capacity to neutralize acids.96 mg/LAverageGroundwaterDetected — no federal limit
+By source (3)— Groundwater, Surface Water, Kcwa
  • GroundwaterPlant
    avg96 mg/Lrange51–140 mg/L
  • Surface WaterPlant
    avg60 mg/Lrange40–73 mg/L
  • KcwaZone
    avg53 mg/Lrange40–66 mg/L
HardnessA measure of dissolved calcium and magnesium minerals.109 mg/LAverageGroundwaterDetected — no federal limit
+By source (3)— Groundwater, Kcwa, Surface Water
  • GroundwaterPlant
    avg109 mg/Lrange52–380 mg/L
  • KcwaZone
    avg61.9 mg/Lrange35.5–117 mg/L
  • Surface WaterPlant
    avg46 mg/Lrange31–55 mg/L
pHA measure of how acidic or basic the water is.7.8AverageSurface WaterDetected — no federal limit
+By source (3)— Groundwater, Surface Water, Kcwa
  • GroundwaterPlant
    avg7.6range4.9–9.8
  • Surface WaterPlant
    avg7.8range7.4–8
  • KcwaZone
    avg7.3range7.18–7.4
TOCTotal organic carbon — a measure of organic material dissolved in the water.2.2 mg/LMaximumKcwaDetected — no federal limit
+By source (2)— Kcwa, Surface Water
  • KcwaPlant
  • Surface WaterPlant

Radionuclides

ContaminantMeasuredStatus
Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances.1.33 pCi/LAverageKcwaWithin the limit
+By source (3)— Groundwater, Kcwa, Surface Water
  • GroundwaterPlant
    avgNot detected pCi/Lrange0–7.5 pCi/L50% of limit
  • KcwaPlant
    avg1.33 pCi/Lrange1.33–1.33 pCi/L9% of limit
  • Surface WaterPlant
    avgNot detected pCi/LrangeNot detected pCi/L0% of limit
Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements.Not detected pCi/LAverageGroundwaterWithin the limit
+By source (3)— Groundwater, Surface Water, Kcwa
  • GroundwaterPlant
    avgNot detected pCi/Lrange0–1.6 pCi/L32% of limit
  • Surface WaterPlant
    avgNot detected pCi/LrangeNot detected pCi/L0% of limit
  • KcwaPlant
    avgNot detected pCi/LrangeNot detected pCi/L0% of limit
UraniumA naturally occurring radioactive metal from erosion of natural deposits.1.3 pCi/LAverageGroundwaterDetected — no federal limit
+By source (3)— Groundwater, Surface Water, Kcwa
  • GroundwaterPlant
    avg1.3 pCi/Lrange0–6.4 pCi/L
  • Surface WaterPlant
    avgNot detected pCi/LrangeNot detected pCi/L
  • KcwaPlant
    avgNot detected pCi/LrangeNot detected pCi/L

Metals

ContaminantMeasuredStatus
CopperA metal that enters water from corroding household plumbing.0.11 mg/L90th percentileAt the tapWithin the limit
ArsenicA naturally occurring element that also enters water from industry and agriculture.Not detected ug/LAverageGroundwaterWithin the limit
+By source (3)— Groundwater, Surface Water, Kcwa
  • GroundwaterPlant
    avgNot detected ug/Lrange0–8.6 ug/L86% of limit
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • KcwaZone
    avgNot detected ug/LrangeNot detected ug/L0% of limit
BariumA metal from erosion of natural deposits and industrial discharge.Not detected mg/LAverageSurface WaterWithin the limit
+By source (3)— Groundwater, Surface Water, Kcwa
  • GroundwaterPlant
    avgNot detected mg/Lrange0–0.15 mg/L8% of limit
  • Surface WaterPlant
    avgNot detected mg/LrangeNot detected mg/L0% of limit
  • KcwaZone
    avgNot detected mg/LrangeNot detected mg/L0% of limit
LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures.Not detected ug/L90th percentileAt the tapNone detected
AluminumA common element sometimes used as a treatment coagulant.91 ug/LAverageKcwaDetected — no federal limit
+By source (3)— Kcwa, Groundwater, Surface Water
  • KcwaZone
    avg91 ug/Lrange0–140 ug/L
  • GroundwaterPlant
    avg0.74 ug/Lrange0–59 ug/L
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L
BoronA naturally occurring element from rock and soil.0.15 mg/LAverageGroundwaterDetected — no federal limit
+By source (3)— Groundwater, Surface Water, Kcwa
  • GroundwaterPlant
    avg0.15 mg/Lrange0.12–0.17 mg/L
  • Surface WaterPlant
    avgNot detected mg/Lrange0–0.13 mg/L
  • KcwaPlant
    avg0.11 mg/Lrange0.11–0.11 mg/L
CalciumA naturally occurring mineral that contributes to water hardness.34 mg/LAverageGroundwaterDetected — no federal limit
+By source (3)— Groundwater, Kcwa, Surface Water
  • GroundwaterPlant
    avg34 mg/Lrange14–140 mg/L
  • KcwaZone
    avg15.6 mg/Lrange10.4–22.1 mg/L
  • Surface WaterPlant
    avg14 mg/Lrange9.6–17 mg/L
Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium.0.48 ug/LAverageGroundwaterDetected — no federal limit
+By source (2)— Groundwater, Kcwa
  • GroundwaterPlant
    avg0.48 ug/Lrange0–2.6 ug/L
  • KcwaZone
    avgNot detected ug/LrangeNot detected ug/L
LithiumA naturally occurring element found in some groundwater.12 ug/LAverageSurface WaterDetected — no federal limit
+By source (2)— Surface Water, Groundwater
  • Surface WaterPlant
    avg12 ug/Lrange10–15 ug/L
  • GroundwaterPlant
    avgNot detected ug/Lrange0–12 ug/L
MagnesiumA naturally occurring mineral that contributes to water hardness.5.54 mg/LAverageKcwaDetected — no federal limit
+By source (3)— Kcwa, Groundwater, Surface Water
  • KcwaZone
    avg5.54 mg/Lrange1.8–14.9 mg/L
  • GroundwaterPlant
    avg4.7 mg/Lrange1–10 mg/L
  • Surface WaterPlant
    avg2.6 mg/Lrange1.7–3.2 mg/L
PotassiumA naturally occurring mineral from rock and soil.2.59 mg/LAverageKcwaDetected — no federal limit
+By source (3)— Groundwater, Kcwa, Surface Water
  • GroundwaterPlant
    avg1.8 mg/Lrange0–5.5 mg/L
  • KcwaZone
    avg2.59 mg/Lrange1.61–4.43 mg/L
  • Surface WaterPlant
    avg1.8 mg/Lrange1.3–2.2 mg/L
SodiumA naturally occurring salt component.32.4 mg/LAverageKcwaDetected — no federal limit
+By source (3)— Groundwater, Kcwa, Surface Water
  • GroundwaterPlant
    avg25 mg/Lrange17–97 mg/L
  • KcwaZone
    avg32.4 mg/Lrange13.4–80.4 mg/L
  • Surface WaterPlant
    avg15 mg/Lrange9.2–18 mg/L
Vanadium7.3 ug/LAverageGroundwaterDetected — no federal limit
+By source (2)— Groundwater, Surface Water
  • GroundwaterPlant
    avg7.3 ug/Lrange0–17 ug/L
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L

Microbial

ContaminantMeasuredStatus
Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals.0MaximumDistribution System-Wide Highest MonthlyNone detected

PFAS ("forever chemicals")

ContaminantMeasuredStatus
PFOAPerfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products.Not detected ng/LAverageGroundwaterWithin the limit
+By source (2)— Groundwater, Surface Water
  • GroundwaterPlant
    avgNot detected ng/Lrange0–10 ng/L250% of limit
  • Surface WaterPlant
    avgNot detected ng/LrangeNot detected ng/L0% of limit
Perfluorobutanesulfonic acidPerfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.'0.18 ng/LAverageGroundwaterDetected — no federal limit
+By source (2)— Groundwater, Surface Water
  • GroundwaterPlant
    avg0.18 ng/Lrange0–5.9 ng/L
  • Surface WaterPlant
    avgNot detected ng/LrangeNot detected ng/L
Perfluoroheptanoic acidPerfluoroheptanoic acid, a PFAS 'forever chemical.'0.07 ng/LAverageGroundwaterDetected — no federal limit
+By source (2)— Groundwater, Surface Water
  • GroundwaterPlant
    avg0.07 ng/Lrange0–4.6 ng/L
  • Surface WaterPlant
    avgNot detected ng/LrangeNot detected ng/L
Perfluorohexanoic acidPerfluorohexanoic acid, a shorter-chain PFAS 'forever chemical.'0.32 ng/LAverageGroundwaterDetected — no federal limit
+By source (2)— Groundwater, Surface Water
  • GroundwaterPlant
    avg0.32 ng/Lrange0–11 ng/L
  • Surface WaterPlant
    avgNot detected ng/LrangeNot detected ng/L
Perfluoropentanoic acidPerfluoropentanoic acid, a shorter-chain PFAS 'forever chemical.'0.57 ng/LAverageGroundwaterDetected — no federal limit
+By source (2)— Groundwater, Surface Water
  • GroundwaterPlant
    avg0.57 ng/Lrange0–5.8 ng/L
  • Surface WaterPlant
    avgNot detected ng/LrangeNot detected ng/L
PFBAPerfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.'0.15 ng/LAverageGroundwaterDetected — no federal limit
+By source (2)— Groundwater, Surface Water
  • GroundwaterPlant
    avg0.15 ng/Lrange0–2.5 ng/L
  • Surface WaterPlant
    avgNot detected ng/LrangeNot detected ng/L

VOCs & pesticides

ContaminantMeasuredStatus
TetrachloroethyleneAn industrial solvent (PCE) used in dry cleaning and degreasing.Not detected ug/LAverageGroundwaterWithin the limit
+By source (3)— Groundwater, Surface Water, Kcwa
  • GroundwaterPlant
    avgNot detected ug/Lrange0–1.2 ug/L24% of limit
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • KcwaPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
TrichloroethyleneAn industrial solvent (TCE) used in metal degreasing.Not detected ug/LAverageGroundwaterWithin the limit
+By source (3)— Groundwater, Surface Water, Kcwa
  • GroundwaterPlant
    avgNot detected ug/Lrange0–1.5 ug/L30% of limit
  • Surface WaterPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
  • KcwaPlant
    avgNot detected ug/LrangeNot detected ug/L0% of limit
1,2,3-TCPNot detected ng/LAverageGroundwaterDetected — no federal limit
+By source (3)— Groundwater, Surface Water, Kcwa
  • GroundwaterPlant
    avgNot detected ng/Lrange0–10 ng/L
  • Surface WaterPlant
    avgNot detected ng/LrangeNot detected ng/L
  • KcwaZone
    avgNot detected ng/LrangeNot detected ng/L
Source: Ucmr5 — Bakersfield, City of (2024), CA's 2024 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 Ucmr5 — Bakersfield, City of (2024), CA's water

+Is Ucmr5 — Bakersfield, City of (2024), CA tap water safe to drink in 2024?

Every one of the 40 contaminants measured in Ucmr5 — Bakersfield, City of (2024), CA's 2024 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 Ucmr5 — Bakersfield, City of (2024), CA tap water?

40 contaminants were measured in Ucmr5 — Bakersfield, City of (2024), CA's 2024 Consumer Confidence Report, spanning metals, pfas ("forever chemicals"), and physical & aggregate. 16 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.

+Are any contaminants in Ucmr5 — Bakersfield, City of (2024), CA tap water approaching the federal limit?

One contaminant is between 80% and 100% of the federal limit in this report: TTHM. Approaching means measured but not in violation — a margin that can close quickly if conditions change.

+Where does the data on this page come from?

Every value is transcribed from Ucmr5 — Bakersfield, City of (2024), CA's 2024 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 Ucmr5 — Bakersfield, City of (2024), 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 2024 report; a new report will replace it once the utility publishes its next annual update.

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