179 Neb. Admin. Code, ch. 13, § 008

Current through September 17, 2024

Section 179-13-008 - REPORTING AND RECORDKEEPING REQUIREMENTS

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:

Click here to view

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.

13-008.01ESpecial 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.

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:

Click here to view

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.

13-008.02CSpecial 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.

179 Neb. Admin. Code, ch. 13, § 008