STATE
WATER
RESOURCES
CONTROL
BOARD
RESOLUTION
NO.
88­
63
ADOPTION
OF
POLICY
ENTITLED
"
SOURCES
OF
DRINKING
WATER"

WHEREAS
1.
California
Water
Code
Section
13140
provides
that
the
State
Board
shall
formulate
and
adopt
State
Policy
for
Water
Quality
Control;
and,

2.
California
Water
Code
Section
13240
provides
that
Water
Quality
Plans
"
shall
conform"
to
any
State
Policy
for
Water
Quality
Control;
and,

3.
The
Regional
Boards
can
conform
the
Water
Quality
Control
Plans
to
this
policy
by
amending
the
plans
to
incorporate
the
policy;
and,

4.
The
State
Board
must
approve
any
conforming
amendments
pursuant
to
Water
Code
Section
13245;
and,

5.
"
Sources
of
drinking
water"
shall
be
defined
in
the
Water
Quality
Control
Plans
as
those
water
bodies
with
beneficial
uses
designated
as
suitable,
or
potentially
suitable,
for
municipal
or
domestic
water
supply
(
MUN);
and,

6.
The
Water
Quality
Control
Plans
do
not
provide
sufficient
detail
in
the
description
of
water
bodies
designated
MUN
to
judge
clearly
what
is,
or
is
not,
a
source
of
drinking
water
for
various
purposes.

THEREFORE
BE
IT
RESOLVED:

All
surface
and
ground
waters
of
the
State
are
considered
to
be
suitable,
or
potentially
suitable,
for
municipal
or
domestic
water
supply
and
should
be
so
designated
by
the
Regional
Boards1
with
the
exception
of:

1.
Surface
and
ground
waters
where:

a.
The
total
dissolved
solids
(
TDS)
exceed
3,000
mg/
L
(
5,000
uS/
cm,
electrical
conductivity)
and
it
is
not
reasonably
expected
by
Regional
Boards
to
supply
a
public
water
system,
or
b.
There
is
contamination,
either
by
natural
processes
or
by
human
activity
(
unrelated
to
the
specific
pollution
incident),
that
cannot
reasonably
be
treated
for
domestic
use
using
either
Best
Management
Practices
or
best
economically
achievable
treatment
practices,
or
c.
The
water
source
does
not
provide
sufficient
water
to
supply
a
single
well
capable
of
producing
an
average,
sustained
yield
of
200
gallons
per
day.

2.
Surface
Waters
Where:

a.
The
water
is
in
systems
designed
or
modified
to
collect
or
treat
municipal
or
industrial
wastewaters,
process
waters,
mining
wastewaters,
or
storm
water
runoff,
provided
that
the
discharge
from
such
systems
is
monitored
to
assure
compliance
with
all
relevant
water
quality
objectives
as
required
by
the
Regional
Boards;
or,

b.
The
water
is
in
systems
designed
or
modified
for
the
primary
purpose
of
conveying
or
holding
agricultural
drainage
waters,
provided
that
the
discharge
from
such
systems
is
monitored
to
assure
compliance
with
all
relevant
water
quality
objectives
as
required
by
the
Regional
Boards.

3.
Ground
water
where:

The
aquifer
is
regulated
as
a
geothermal
energy
producing
source
or
has
been
exempted
administratively
pursuant
to
40
Code
of
Federal
Regulations,
Section
146.4
for
the
purpose
of
underground
injection
of
fluids
associated
with
the
production
of
hydrocarbon
or
geothermal
energy,
provided
that
these
fluids
do
not
constitute
a
hazardous
waste
under
40
CFR,
Section
261.3.

4.
Regional
Board
Authority
to
Amend
Use
Designations:

Any
body
of
water
which
has
a
current
specific
designation
previously
assigned
to
it
by
a
Regional
Board
in
Water
Quality
Control
Plans
may
retain
that
designation
at
the
Regional
Board's
discretion.
Where
a
body
of
water
is
not
currently
designated
as
MUN
but,
in
the
opinion
of
a
Regional
Board,
is
presently
or
potentially
suitable
for
MUN,
the
Regional
Board
shall
include
MUN
in
the
beneficial
use
designation.

The
Regional
Boards
shall
also
assure
that
the
beneficial
uses
of
municipal
and
domestic
supply
are
designated
for
protection
wherever
those
uses
are
presently
being
attained,
and
assure
that
any
changes
in
beneficial
use
designations
for
waters
of
the
State
are
consistent
with
all
applicable
regulations
adopted
by
the
Environmental
Protection
Agency.

The
Regional
Boards
shall
review
and
revise
the
Water
Quality
Control
Plans
to
incorporate
this
policy.
____________________________________

1
This
policy
does
not
affect
any
determination
of
what
is
a
potential
source
of
drinking
water
for
the
limited
purposes
of
maintaining
a
surface
impoundment
after
June
30,
1988,
pursuant
to
Section
25208.4
of
the
Health
and
Safety
Code.

CERTIFICATION
The
undersigned,
Administrative
assistant
to
the
Board,
does
hereby
certify
that
the
foregoing
is
a
full,
true,
and
correct
copy
of
a
policy
duly
and
regularly
adopted
at
a
meeting
of
the
State
Water
Resources
Control
Board
held
on
May
19,
1988.

\
s\
Maureen
Marché
Administrative
Assistant
to
the
Board
