Current through August 31, 2023
01.
Total
Coliform Sampling and Analytical Requirements. The Total Coliform Rule,
40 CFR
141.21, is herein incorporated by reference.
The Revised Total Coliform Rule, 40 CFR Part 141 , Subpart Y, is herein
incorporated by reference, excluding the annual monitoring provisions in
40 CFR
141.854 (a)(4), (d), (e), (f) and
(h). (3-24-22)
a. Routine monitoring requirements for public
water systems serving more than one thousand (1,000) people.
40 CFR
141.857 is herein incorporated by reference.
(3-24-22)
b. Routine monitoring
requirements for community water systems serving one thousand (1,000) or fewer
people using only ground water.
40 CFR
141.855 is herein incorporated by reference.
(3-24-22)
c. Routine monitoring
requirements for subpart H public water system serving one thousand (1,000) or
fewer people. 40 CFR
141.856 is herein incorporated by reference.
(3-24-22)
d. Routine monitoring
requirements for non-community water system serving one thousand (1,000) or
fewer people using only ground water.
40 CFR
141.854 is herein incorporated by reference,
excluding the annual monitoring provisions in
40 CFR
141.854 (a)(4), (d), (e), (f), and
(h). (3-24-22)
02.
Turbidity Sampling and Analytical
Requirements. 40 CFR
141.22 is herein incorporated by reference.
(3-24-22)
03.
Inorganic
Chemical Sampling and Analytical Requirements.
40 CFR
141.23 is herein incorporated by reference.
(3-24-22)
04.
Organic
Chemicals, Sampling and Analytical Requirements.
40 CFR
141.24 is herein incorporated by reference.
(3-24-22)
05.
Analytical
Methods for Radioactivity.
40 CFR
141.25 is herein incorporated by reference.
(3-24-22)
06.
Monitoring
Frequency and Compliance Requirements for Radioactivity in Community Water
Systems. 40CFR
141.26 is herein incorporated by reference.
(3-24-22)
07.
Monitoring
Waivers. 40 CFR
141.23(b)
141.23(c),
141.24(f),
141.24(h) are
herein incorporated by reference. (3-24-22)
a.
Waivers from sampling requirements in Subsections
100.03,
100.04,
200.01, and
503.03.e.v. may be available
to all systems for all contaminants except nitrate, nitrite, and disinfection
byproducts and are based upon a vulnerability assessment, use assessment, the
analytical results of previous sampling, or some combination of vulnerability
assessment, use assessment, and analytical results. (3-24-22)
b. There are two (2) general types of
monitoring waivers: (3-24-22)
i. Waivers
based exclusively upon previous analytical data (3-24-22)
ii. Waivers based on a use or vulnerability
assessment. (3-24-22)
c.
Waivers are to be made by the Department on a contaminant specific basis and
must be in writing. (3-24-22)
d.
Vulnerability assessments may be conducted by the Department, the water system,
or a third party organization. The Department shall approve or disapprove all
vulnerability assessments in writing. (3-24-22)
e. Water systems which do not receive waivers
shall sample at the required initial and repeat monitoring frequencies.
(3-24-22)
f. If a system elects to
request a waiver from monitoring, it shall do so in writing at least sixty (60)
days prior to the required monitoring deadline date.
(3-24-22)
08.
Initial Monitoring Schedule. In addition to the requirements
specified in 40 CFR
141.23,
40 CFR
141.24, and
40 CFR
141.40, initial monitoring must be completed
according to the following schedule unless otherwise specified by the
Department: (3-24-22)
a. Public water systems
serving more than one hundred (100) people must conduct initial monitoring
before January 1, 1995 except that: (3-24-22)
i. Initial monitoring for nitrate and nitrite
must be completed before January 1, 1994 for all surface water sources serving
transient noncommunity public water systems and for all ground water sources
serving any public water system. (3-24-22)
ii. Initial monitoring for nitrate and
nitrite must be completed before April 1, 1993 for all surface water sources
serving community or nontransient noncommunity public water systems.
(3-24-22)
iii. Initial monitoring
required under 40 CFR
141.23(c) must be completed
before January 1, 1994 for all surface water sources serving community or
nontransient noncommunity public water systems. (3-24-22)
b. Public water systems serving one hundred
(100) or less people must conduct initial monitoring before January 1, 1996
except that: (3-24-22)
i. Initial monitoring
for nitrate and nitrite must be completed before January 1, 1994 for all
surface water sources serving transient noncommunity public water systems and
for all ground water sources serving a public water system. (3-24-22)
ii. Initial monitoring for nitrate and
nitrite must be completed before April 1, 1993 for all surface water sources
serving community or nontransient noncommunity public water systems.
(3-24-22)
iii. Initial monitoring
required under 40 CFR
141.23(c) must be completed
before January 1, 1994 for all surface water sources serving community or
nontransient noncommunity public water systems.
(3-24-22)
09.
Alternate Analytical Techniques.
40 CFR
141.27 is herein incorporated by reference.
(3-24-22)
10.
Approved
Laboratories. 40 CFR
141.28 and
40 CFR
141.852(b) are herein
incorporated by reference. All analyses conducted pursuant to these rules,
except those listed below, shall be performed in laboratories certified or
granted reciprocity by the Idaho Department of Health and Welfare, Bureau of
Laboratories, as provided in IDAPA 16.02.13, "Rules Governing Certification of
Idaho Water Quality Laboratories." The following analyses may be performed by
any person acceptable to the Department of Environmental Quality: (3-24-22)
a. pH; (3-24-22)
b. Turbidity (Nephelometric method only);
(3-24-22)
c. Daily analysis for
fluoride; (3-24-22)
d. Temperature;
(3-24-22)
e. Disinfectant
residuals, except ozone, which shall be analyzed using the Indigo Method or an
acceptable automated method pursuant to Subsection
300.05.d.; (3-24-22)
f. Alkalinity; (3-24-22)
g. Calcium; (3-24-22)
h. Conductivity; (3-24-22)
i. Silica; and (3-24-22)
j. Orthophosphate.
(3-24-22)
11.
Monitoring of Consecutive Water Systems.
40 CFR
141.29 is herein incorporated by reference.
(3-24-22)
12.
Disinfection
Residuals, Disinfection Byproducts, and Disinfection Byproduct
Precursors. 40 CFR Part 141 , Subpart L is herein incorporated by
reference. (3-24-22)
