Water,
Journal Year:
2024,
Volume and Issue:
16(17), P. 2375 - 2375
Published: Aug. 24, 2024
The
spatial
mapping
and
prediction
of
groundwater
quality
(GWQ)
is
important
for
sustainable
management,
but
several
research
gaps
remain
unexplored,
including
the
inaccuracy
interpolation,
limited
consideration
geological
environment
human
activity
effects,
limitation
to
specific
pollutants,
unsystematic
indicator
selection.
This
study
utilized
entropy-weighted
water
index
(EWQI),
LightGBM
model,
pressure-state-response
(PSR)
framework
SHapley
Additive
exPlanations
(SHAP)
analysis
address
above
gaps.
normalized
importance
(NI)
shows
that
NO3−
(0.208),
Mg2+
(0.143),
SO42−
(0.110),
Cr6+
(0.109)
Na+
(0.095)
should
be
prioritized
as
parameters
remediation,
skewness
EWQI
distribution
indicates
although
most
sampled
locations
have
acceptable
GWQ,
a
few
areas
suffer
from
severely
poor
GWQ.
PSR
identifies
13
indicators
environments
activities
SMP
Despite
high
AUROCs
(0.9074,
0.8981,
0.8885,
0.9043)
across
four
random
training
testing
sets,
it
was
surprising
significant
uncertainty
observed,
with
Pearson
correlation
coefficients
(PCCs)
0.5365
0.8066.
We
addressed
this
issue
by
using
spatial-grid
average
probabilities
maps.
Additionally,
population
nighttime
light
are
key
indicators,
while
net
recharge,
land
use
cover
(LULC),
degree
urbanization
lowest
importance.
SHAP
highlights
both
positive
negative
impacts
on
identifying
point-source
pollution
main
cause
GWQ
in
area.
Due
field,
future
studies
focus
six
aspects:
multi-method
assessment,
quantitative
relationships
between
comparisons
various
models,
application
selection,
development
methods
reduce
uncertainty,
explainable
machine
learning
techniques
management.
Environmental Geochemistry and Health,
Journal Year:
2025,
Volume and Issue:
47(4)
Published: March 13, 2025
Abstract
In
attention
to
the
Sustainable
Development
Goal
6,
quality
evaluation
of
water
resources
in
Mexico
is
limited
compared
other
regions.
This
study
provided
new
data
from
Oriental
Basin,
an
important
socio-economic
region
with
up
20%
population
growth
over
last
decade
by
assessing
groundwater
Libres-Oriental
aquifer
(Ca–Mg–HCO
3
facies;
F
−
:
2.5–9.9
mg/L;
NO
75.3
mg/L)
and
Totolcingo
Lake
(Na–Cl
12.7–13.2
<
0.75
mg/L).
Fluoride
content
grouped
about
80%
samples
as
promotor
dental
skeletal
fluorosis.
Nitrate
Pollution
Index
suggested
moderate
pollution
very
significant
10%
samples.
Possible
exposure
older
adults
elderly
pregnant
women
fluorosis
all
(Hazard
Quotient
>
1)
Basin
55%
them
might
also
be
causing
infants
suggest
a
potential
health
risk
hotspot
eastern-central
Mexico.
Even
though
did
not
contain
enough
cause
methemoglobinemia,
their
boiling
for
drinking
could
enhance
nitrate
beyond
WHO
limit.
Thus,
mitigation
techniques
diminish
risks
consuming
population.
Pure and Applied Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 17, 2025
Abstract
uMhlathuze
River
in
KwaZulu-Natal,
South
Africa,
is
a
critical
freshwater
resource
supporting
industrial,
agricultural,
and
domestic
activities.
However,
its
water
quality
under
threat
from
various
anthropogenic
pressures.
This
review
synthesises
existing
literature
to
assess
the
river’s
quality,
focusing
on
key
contaminants,
spatial
temporal
trends,
ecological
impacts,
socio-economic
implications.
Key
pollutants
identified
include
elevated
levels
of
nitrates
(>10
mg/L),
phosphates
(>2
heavy
metals
such
as
lead
(Pb
>
0.01
mg/L)
chromium
(Cr
0.05
(Nsibande
et
al.
Afr.
J.
Aquat.
Sci.
2024,
262–274,
3.),
microbial
contaminants
with
faecal
coliforms
exceeding
1,000
CFU/100
mL
(Mthembu
al.,
Microbiol.
Res.
2012,
2020–2026,
9.).
Seasonal
variations
exacerbate
these
issues,
higher
pollutant
loads
observed
during
rainy
periods
due
increased
runoff
urban
areas.
Figures
illustrating
contaminant
trends
by
season
or
location
could
complement
findings.
The
degraded
has
led
declines
biodiversity,
including
fish
aquatic
macroinvertebrates,
poses
significant
public
health
risks
for
communities
reliant
river
drinking
sanitation.
Maps
pollution
hotspots
biodiversity
loss
would
aid
visualizing
impacts.
knowledge
gaps
inconsistent
sampling
methodologies,
insufficient
long-term
data,
absence
region-specific
Water
Quality
Index
(WQI).
highlights
need
standardised
WQI
frameworks,
advanced
monitoring
technologies,
tracking
mechanisms
address
challenges.
Additionally,
studies
community-based
conservation
initiatives
are
recommended
mitigate
impacts
improve
sustainability.
These
findings
serve
foundation
targeted
research
policy
actions
protect
sustainably
manage
system.
Water,
Journal Year:
2025,
Volume and Issue:
17(7), P. 1024 - 1024
Published: March 31, 2025
This
study
evaluates
the
water
quality
of
Tamiš
River,
a
tributary
Danube,
at
Jaša
Tomić
and
Pančevo
hydrological
stations
from
2011
to
2016
2018
2022,
using
Water
Pollution
Index
(WPI)
seasonal
analysis.
The
analysis
revealed
elevated
nitrite
orthophosphate
concentrations
both
stations,
with
exhibiting
extreme
microbial
contamination
in
2015,
attributed
urban
runoff,
agricultural
activities,
inadequate
wastewater
treatment.
Seasonal
results
indicate
that
while
spring
conditions
align
Class
I
standards,
summer
presents
critical
risks,
especially
Pančevo,
where
highest
WPI
value
(26.47
2015)
was
recorded.
Autumn
shows
stabilization,
though
sporadic
peaks
reflect
impact
nutrient
runoff.
Winter
are
marked
by
stability,
favorable
dissolved
oxygen
levels
but
occasional
exceedances
heavy
metals,
particularly
Tomić.
Increased
suspended
solids
metals
emphasize
diverse
pollution
sources,
including
industrial
discharges
soil
erosion.
These
findings
underscore
necessity
integrated
management
strategies,
such
as
treatment
upgrades
sustainable
practices,
mitigate
pollution.
Protecting
River
is
crucial
for
supporting
biodiversity,
safeguarding
public
health,
ensuring
use
this
vital
Danube
tributary.
