Indiana Administrative Code
Title 327 - WATER POLLUTION CONTROL DIVISION
Article 8 - PUBLIC WATER SUPPLY
Rule 12 - Classification of Community Public Water System and Nontransient Noncommunity Public Water System Treatment Plants and Distribution Systems; Examination and Certification of Operators
Section 12-2 - Classification of water distribution systems and water treatment plants
Universal Citation: 327 IN Admin Code 12-2
Current through September 18, 2024
Authority: IC 13-14-8; IC 13-18-11-1.5; IC 13-18-11-13
Affected: IC 13-18-11
Sec. 2.
(a) A water distribution system shall be classified in one (1) of three (3) classifications as follows:
(1) Class DSS (distribution
system small) includes systems that:
(A)
serve a population of less than three thousand three hundred one (3,301);
and
(B) have no components other
than:
(i) pressure tanks; or
(ii) storage tanks.
Nontransient noncommunity public water systems serving a population less than five hundred one (501) utilizing no treatment other than ion exchange or inline filtration are DSS systems.
(2) Class DSM (distribution system
medium) includes systems that meet one (1) of the following:
(A) Serve a population greater than three
thousand three hundred (3,300) but less than ten thousand one (10,001) people
and have no mechanical means of movement of water other than one (1) of the
following:
(i) Pressure tanks.
(ii) Storage tanks.
(iii) Booster pumps to storage
tanks.
(B) Serve a
population of less than three thousand three hundred one (3,301) and consist of
at least one (1) of the following:
(i) Pumps,
not including well pumps, before the entry point to the distribution
system.
(ii) Booster pumps to
storage tanks.
(3) Class DSL (distribution system large)
includes systems that meet one (1) of the following:
(A) Serve a population greater than ten
thousand (10,000) people.
(B) Serve
a population of less than ten thousand one (10,001) and consist of at least one
(1) of the following:
(i) Booster pumps in the
distribution system other than booster pumps to storage tanks.
(ii) Mechanical devices for movement of water
beyond storage.
(b) A water treatment plant shall be classified in one (1) of six (6) classifications, based on population served and type of treatment, as follows:
(1) Class
WT 1 includes systems that meet the following:
(A) Serve a population less than five hundred
one (501) people.
(B) Are a
community water system.
(C) Acquire
water from one (1) or both of the following:
(i) Ground water.
(ii) Purchase.
(D) Have one (1) or both of the following:
(i) Ion exchange softening process for cation
removal.
(ii) Inline filtration
device with no chemical treatment.
(2) Class WT 2 includes, with no population
limitations, systems that meet the requirements of clause (A) and either clause
(B) or (C), or both, as follows:
(A) Acquire
water from one (1) or more of the following:
(i) Ground water.
(ii) Purchase.
(B) Utilize chemical feed to achieve one (1)
of the following:
(i) Disinfection.
(ii) Fluoride standardization.
(iii) Water stabilization.
(C) Have one (1) or both of the
following:
(i) An ion exchange softening
process for cation removal if the population served is greater than five
hundred (500) and less than three thousand three hundred one (3,301).
(ii) An inline filtration device if the
population served is greater than five hundred (501) and less than three
thousand three hundred one (3,301).
(3) Class WT 3 includes systems that meet the
following:
(A) Acquire water from one (1) or
both of the following:
(i) Ground
water.
(ii) Purchase.
(B) Utilize chemical
feed.
(C) Have one (1) or more of
the following:
(i) Pressure or gravity
filtration.
(ii) Ion exchange
processes if the population served is greater than three thousand three hundred
(3,300).
(iii) Lime soda
softening.
(iv) Reverse
osmosis.
(v) Inline filtration if
the population served is greater than three thousand three hundred
(3,300).
(4)
Class WT 4 includes systems that meet the following:
(A) Serve a population less than ten thousand
one (10,001) people.
(B) Acquire
water from one (1) or both of the following:
(i) Surface water.
(ii) Ground water under the direct influence
of surface water.
(5) Class WT 5 includes systems that meet the
following:
(A) Serve a population greater than
ten thousand (10,000) people.
(B)
Acquire water from one (1) or both of the following:
(i) Surface water.
(ii) Ground water under the direct influence
of surface water.
(6) Class WT 6 includes systems that utilize
newly emerging treatment technology not commonly in use for drinking water
treatment in Indiana, as determined by the commissioner.
(7) The commissioner may determine the
classification of a system based on system complexity and operational
requirements where necessary.
Disclaimer: These regulations may not be the most recent version. Indiana may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google
Privacy Policy and
Terms of Service apply.
