Nebraska Administrative Code
Topic - HEALTH AND HUMAN SERVICES SYSTEM
Title 179 - PUBLIC WATER SYSTEMS
Chapter 13 - SURFACE WATER TREATMENT
Section 179-13-008 - REPORTING AND RECORDKEEPING REQUIREMENTS
Universal Citation: 179 NE Admin Rules and Regs ch 13 ยง 008
Current through March 20, 2024
008.01 A public water system that uses a ground water source under the direct influence of surface water and does not provide filtration treatment must report monthly to the Director the information specified in 179 NAC 13-008 beginning six months after the Director determines that the ground water source is under the direct influence of surface water, unless filtration is required, in which case the Director may specify alternative reporting requirements, as appropriate, until filtration is in place. The reports must be submitted on Forms PWS 403, PWS 404, and PWS 405 in Attachment 3 to 179 NAC 13 (which is hereby incorporated by reference) or in an alternate format that includes the same information as contained on the appropriate form.
13-008.01A
Source water quality information must be reported to the Director within ten
days after the end of each month the system serves water to the public.
Information that must be reported includes:
1. The cumulative number of months for which
results are reported.
2. The number
of fecal and/or total coliform samples, whichever are analyzed during the month
(if a system monitors for both, only fecal coliforms must be reported), the
dates of sample collection, and the dates when the turbidity level exceeded 1
NTU.
3. The number of samples
during the month that had equal to or less than 20 per 100 ml fecal coliforms
and/or equal to or less than 100 per 100 ml total coliforms.
4. The cumulative number of fecal or total
coliform samples, whichever are analyzed, during the previous six months the
system served water to the public.
5. The cumulative number of samples that had
equal to or less than 20 per 100 ml of fecal coliforms or equal to or less than
100 per 100 ml total coliforms, whichever are analyzed, during the previous six
months the system served water to the public.
6. The percentage of samples that had equal
to or less than 20 per 100 ml fecal coliforms or equal to or less than 100 per
100 ml total coliforms, whichever are analyzed, during the previous six months
the system served water to the public.
7. The maximum turbidity level measured
during the month, the date(s) of occurrence(s) for any measurement(s) which
exceeded 5 NTU, and the date(s) the occurrence(s) was reported to the
Director.
8. For the first 12
months of recordkeeping, the dates and cumulative number of events during which
turbidity exceeded 5 NTU, and after one year of recordkeeping for turbidity
measurement, the dates and cumulative number of events during which the
turbidity exceeded 5 NTU in the previous 12 months the system served water to
the public.
9. For the first 120
months of recordkeeping, the dates and cumulative number of events during which
the turbidity exceeded 5 NTU, and after 10 years of recordkeeping for turbidity
measurements, the dates and cumulative number of events during which the
turbidity exceeded 5 NTU in the previous 120 months the system served water to
the public.
13-008.01B
Disinfection information specified in 179 NAC
13-007 must be reported to the
Director within ten days after the end of each month the system serves water to
the public. Information that must be reported includes:
1. For each day, the lowest measurement of
residual disinfectant concentration in mg per liter in water entering the
distribution system.
2. The date
and duration of each period when the residual disinfectant concentration in
water entering the distribution system fell below 0.2 mg per liter and when the
Director was notified of the occurrence.
3. The daily residual disinfectant
concentration(s) in mg per liter and disinfectant contact time(s) in minutes
used for calculating the CT value(s).
4. If chlorine is used, the daily
measurement(s) of pH of disinfected water following each point of chlorine
disinfection.
5. The daily
measurement(s) of water temperature in degrees Celsius following each point of
chlorine disinfection.
6. The daily
CTcalc and CTcalc divided by CT( 99.9) values for each
disinfectant measurement or sequence and the sum of all CTcalc divided by
CT( 99.9) values before or at the first
customer.
7. The daily
determination of whether disinfection achieves adequate Giardia
cyst and virus inactivation, i.e., whether CTcalc
divided by CT( 99.9) is at least 1.0 or, where
disinfectants other than chlorine are used, other indicator conditions that the
Director determines are appropriate, are met.
8. The following information on the samples
taken in the distribution system in conjunction with total coliform monitoring
pursuant to 179 NAC
13-005:
a. Number of instances where the residual
disinfectant concentration is measured;
b. Number of instances where the residual
disinfectant concentration is not measured but heterotrophic bacteria plate
count (HPC) is measured;
c. Number
of instances where the residual disinfectant concentration is measured but not
detected and no HPC is measured;
d.
Number of instances where the residual disinfectant concentration is detected
and where HPC is greater than 500 per ml;
e. Number of instances where the residual
disinfectant concentration is not measured and HPC is greater than 500 per
ml;
f. For the current and previous
month the system served water to the public, the value of "V" in the following
formula:
Where:
a = the value in 179 NAC 13-008.01B item 8.a.
b = the value in 179 NAC 13-008.01B item 8.b.
c = the value in 179 NAC 13-008.01B item 8.c.
d = the value in 179 NAC 13-008.01B item 8.d.
e = the value in 179 NAC 13-008.01B item 8.e.
V = percent of samples with undetectable residual disinfectant concentration
g. If the Director determines, based on
site-specific considerations, that a system has no means for having a sample
transported and analyzed for HPC by the Department Laboratory or an approved
laboratory under the requisite time and temperature conditions required of the
laboratory and that the system is providing adequate disinfection in the
distribution system, the requirements of 179 NAC
13-008.01B item 8
do not apply to that system.
9. A system need not report the data listed
in 179 NAC
13-008.01B item 1
and
13-008.01B items
3 to 6, if all data listed in 179 NAC
13-008.01B items
1 to 8 remain on file at the system, and the Director determines that:
1. The system owner has submitted to the
Director all the information required by 179 NAC
13-008.01B items
1 to 8 for at least 12 months, and
2. The Director has determined that the
system is not required to provide filtration treatment.
13-008.01C No later than ten days
after the end of each federal fiscal year (September 30), each system owner
must provide to the Director a report which summarizes its compliance with all
wellhead protection requirements specified in 179 NAC
13-004.02E.
13-008.01D No later than ten days after the
end of each federal fiscal year (September 30) each system must provide to the
Director a report on the on-site inspection conducted during that year pursuant
to 179 NAC 13-004.03, unless the on-site inspection was conducted by the
Director.
13-008.01E
Special Reports
13-008.01E1 Each system, upon discovering
that a water-borne disease outbreak potentially attributable to the water
system has occurred, must report that occurrence to the Director as soon as
possible, but not later than by the end of the next business day.
13-008.01E2 If at any time the turbidity
exceeds 5 NTU, the system must consult with the Department as soon as
practical, but no later than 24 hours after the exceedance is known, in
accordance with the public notification requirements under 179 NAC 4-005.02
item 3.
13-008.01E3 If at any time
the residual falls below 0.2 mg per liter in the water entering the
distribution system, the system must notify the Director as soon as possible,
but no later than by the end of the next business day. The system also must
notify the Director by the end of the next business day whether or not the
residual was restored to at least 0.2 mg per liter within four hours.
008.02 A public water system that uses a surface water source or a ground water source under the direct influence of surface water and provides filtration treatment must report monthly to the Director the information specified 179 NAC 13-008 beginning June 29, 1993, or when filtration is installed, whichever is later. The reports must be submitted on Forms PWS 405 and PWS 408 in Attachment 3 to 179 NAC 13 (which is hereby incorporated by reference) or in an alternate format that includes the same information as contained on the appropriate form.
13-008.02A Turbidity measurements as required
by 179 NAC 13-007.03A must be reported within ten days after the end of each
month the system serves water to the public. Information that must be reported
includes:
1. The total number of filtered
water turbidity measurements taken during the month.
2. The number and percentage of filtered
water turbidity measurements taken during the month which are less than or
equal to the turbidity limits specified in 179 NAC
13-006.
3. The date and value of any turbidity
measurements taken during the month which exceed 5 NTU.
13-008.02B Disinfection information specified
in 179 NAC
13-007.03 must be reported to the
Director within ten days after the end of each month the system serves water to
the public. Information that must be reported includes:
1. For each day, the lowest measurement of
residual disinfectant concentration in mg per liter in water entering the
distribution system.
2. The date
and duration of each period when the residual disinfectant concentration in
water entering the distribution system fell below 0.2 mg per liter and when the
Director was notified of the occurrence.
3. The following information on the samples
taken in the distribution system in conjunction with total coliform monitoring
pursuant to 179 NAC
13-005:
a. Number of instances where the residual
disinfectant concentration is measured;
b. Number of instances where the residual
disinfectant concentration is not measured but heterotrophic bacteria plate
count (HPC) is measured;
c. Number
of instances where the residual disinfectant concentration is measured but not
detected and no HPC is measured;
d.
Number of instances where no residual disinfectant concentration is detected
and the HPC is greater than 500 per ml;
e. Number of instances where the residual
disinfectant concentration is not measured and HPC is greater than 500 per
ml;
f. For the current and previous
month the system serves water to the public, the value of "V" in the following
formula:
Where:
a = the value in 179 NAC 13-008.02B item 3.a.
b = the value in 179 NAC 13-008.02B item 3.b.
c = the value in 179 NAC 13-008.02B item 3.c.
d = the value in 179 NAC 13-008.02B item 3.d.
e = the value in 179 NAC 13-008.02B item 3.e.
V = percent of samples with undetectable residual disinfectant concentration
g. If the Director determines, based on
site-specific considerations, that a system has no means of having a sample
transported and analyzed for HPC by the Department Laboratory or an approved
laboratory under the requisite time and temperature conditions required of the
laboratory and that the system is providing adequate disinfection in the
distribution system, the requirements of 179 NAC
13-008.02B items
3.a. to 3.f. do not apply.
4. A system need not report the data listed
in 179 NAC
13-008.02B item 1
if all the data listed in 179 NAC
13-008.02B items
1 to 3 remain on file at the system and the Director determines that the system
has submitted all the information required by 179 NAC
13-008.02B items
1 to 3 for at least 12 months.
13-008.02C
Special
Reports
13-008.02C1 Each system
owner, upon discovering that a waterborne disease outbreak potentially
attributable to that water system has occurred, must report that occurrence to
the Director as soon as possible, but no later than by the end of the next
business day.
13-008.02C2 If at any
time the turbidity exceeds 5 NTU, the system must consult with the Director as
soon as practical, but no later than 24 hours after the exceedance is known, in
accordance with the public notification requirements under 179 NAC 4-005.02
item 3.
13-008.02C3 If at any time
the residual falls below 0.2 mg per liter in the water entering the
distribution system, the system owner must notify the Director as soon as
possible, but no later than by the end of the next business day. The system
owner must also notify the Director by the end of the next business day whether
or not the residual was restored to at least 0.2 mg per liter within four
hours.
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