Current through Register Vol. 50, No. 9, September 20, 2024
A. Each
public water system shall have equipment and facilities or contracted services
for the routine daily laboratory testing necessary to ensure the proper
operation of the water supply system.
B. Laboratory equipment selection shall be
based on:
1. the characteristics of the raw
water source;
2. the complexity of
the treatment process involved;
3.
the contaminants or analytes for which monitoring is required or desired;
and
4. the particular laboratory
methodology and minimum accuracy to be performed for such contaminants or
analytes.
C. Laboratory
test kits which simplify procedures for making one or more tests may be
acceptable.
D. An operator or
chemist qualified to perform the necessary laboratory tests shall be
required.
E. Other than those
analytes allowed to be analyzed in a LDH-OPH Approved Chemical
Laboratory/Drinking Water (see Chapter 15 of this Part), analyses conducted to
determine compliance with drinking water regulations shall be performed in a
LDH-OPH certified or a U. S. Environmental Protection Agency (EPA) certified
laboratory in accordance with the requirements of this Part.
F. Persons designing and equipping laboratory
facilities shall confer with the state health officer before beginning the
preparation of plans or the purchase of equipment. Methods for verifying
adequate quality assurances and for routine calibration of equipment shall be
provided.
G. Testing Equipment. As
a minimum, the following laboratory equipment shall be provided.
1. Surface water systems or groundwater under
the direct influence of surface water (GWUDISW) systems shall have a
nephelometric turbidimeter meeting the requirements of the approved turbidity
methods in Chapter 11 of this Part.
2. Each surface water treatment plant or
GWUDISW plant utilizing flocculation and sedimentation, including those which
lime soften, shall have a pH meter, jar test equipment, and titration equipment
for both hardness and alkalinity.
3. Each ion-exchange softening plant, and
lime softening plant treating only groundwater shall have a pH meter and
titration equipment for both hardness and alkalinity.
4. Each iron and/or manganese removal plant
shall have test equipment capable of accurately measuring iron to a minimum of
0.1 milligrams per liter, and/or test equipment capable of accurately measuring
manganese to a minimum of 0.05 milligrams per liter.
5. Public water systems which chlorinate
shall have test equipment for determining both free and total chlorine residual
by the applicable methods listed in Table 1 of §1105. C of this Part.
6. If a public water system adjusts its
fluoride level, equipment shall be provided for measuring the quantity of
fluoride in the water. Such equipment shall be subject to the approval of the
state health officer.
7. Public
water systems which feed poly and/or orthophosphates shall have test equipment
capable of accurately measuring phosphates from 0.1 to 20 milligrams per liter
or to 0.1 to 1.2 times the target dose whichever is less.
8. Public water systems that use chlorine
dioxide shall have test equipment for determining both chlorine dioxide and
chlorite residual by the applicable methods listed in Chapters 11 and 13 of
this Part.
9. Surface water
systems, GWUDISW systems, and any groundwater system required to or choosing to
achieve a minimum CT value [residual disinfectant concentration ("C") times the
contact time ("T") when the pipe, vessel, etc., is in operation] at or before
the first customer shall have a method of measuring water temperature using a
thermometer or thermocouple with a minimum accuracy of plus or minus 0.5
degrees Celsius (0.5°C).
H. Physical Facilities. Where laboratory
facilities are provided each public water system shall provide:
1. sufficient bench space;
2. adequate ventilation;
3. adequate lighting;
4. storage room;
5. laboratory sink; and
6. auxiliary facilities (e.g., restroom
facilities available on-site of the in-house lab for the operator, analyst, or
chemist running the lab tests; special fire-proof cabinets for storing volatile
reagents as may be required by the state fire marshal; special ventilation
hoods as may be required by OSHA over the work area; refrigerator; Bunsen
burner, stirrers; etc.);
7. air
conditioning as deemed necessary.
AUTHORITY NOTE:
Promulgated in accordance with the provisions of
R.S.
40:4.A.(8), 40:4.13.D.(1)(2) and
40:5.A.(2)(3)(5)(6)(7)(17).
