Hawaii Administrative Rules
Title 11 - DEPARTMENT OF HEALTH
Subtitle 1 - GENERAL DEPARTMENTAL PROVISIONS
Chapter 20 - RULES RELATING TO PUBLIC WATER SYSTEMS
Appendix F - REPORTING REQUIREMENTS FOR DISINFECTION BYPRODUCT PRECURSORS AND ENHANCED COAGULATION OR ENHANCED SOFTENING (HAR Section 11-20-45.1(e)(4))

If you are a...

You must report...1

1. System monitoring monthly or quarterly for TOC under the requirements of § 11-20-45.1(c)(4) and required to meet the enhanced coagulation or enhanced softening requirements in § 11-20-45.1(f)(2)(B) or (C).

I. The number of paired (source water and treated water) samples taken during the last quarter.

II. The location, date and results of each paired sample and associated alkalinity taken during the last quarter.

III, For each month in the

reporting period that paired samples were taken, the arithmetic average of the percent reduction of TOC for each paired sample and the required TOC percent removal.

IV. Calculations for determining compliance with the TOC percent removal requirements, as provided in § 11-20-45.1(f)(3)(A).

V. Whether the system is in compliance with the enhanced coagulation or enhanced softening percent removal requirements in § 11-20-45.1(f)(2) for the last four quarters.

2. System monitoring monthly or quarterly for TOC under the requirements of § 11-20-45.1(c)(4) and meeting one or more of the alternative compliance criteria in § 11-20-45.1(f)(1)(B) or (C).

I. The alternative compliance criterion that the system is using.

II. The number of paired samples taken during the last quarter.

III. The location, date and result of each paired sample and associated alkalinity taken during the last quarter.

IV. The running annual arithmetic average based on monthly averages (or quarterly samples) of source water TOC for systems meeting a criterion in § 11-20-45.1(f)(1)(B)(i) or (iii) or of treated water TOC for systems meeting the criterion in § 11-20-45.1(f)(1)(B)(ii).

V. The running annual arithmetic average based on monthly averages (or quarterly samples) of source water SUVA for systems meeting the criterion in § 11-20-45.1(f)(1)(B)(V) or of treated water SUVA for systems meeting the criterion in § 11-20-45.1(f)(1)(B)(vi).

VI. The running annual average of source water alkalinity for systems meeting the criterion in § 11-20-45.1(f)(1)(B)(iii) and of treated water alkalinity for systems meeting the criterion in § 11-20-45.1(f)(1)(C)(i).

VII. The running annual average for both TTHM and HAA5 for systems meeting the criterion in § 11-20-45.(f)(1)(B)(iii) or (iv) .

VIII. The running annual average of the amount of magnesium hardness removal (as CaCoa in mg/L) for systems meeting the criterion in § 11-20-45.1(f)(1)(C)(ii).

IX. Whether the system is in compliance with the particular alternative compliance criterion in § 11-20-45.1(f)(1)(B) or (C).