No. 32407 (Amendment): R309-520. Facility Design and Operation: Disinfection

DAR File No.: 32407
Filed: 02/26/2009, 10:28
Received by: NL

RULE ANALYSIS

Purpose of the rule or reason for the change:

The purpose of this amendment is to add ultraviolet light as a fourth allowable primary disinfectant and to correct a reference for ozone under Section R309-520-11.

Summary of the rule or change:

This amendment adds ultraviolet light as a fourth allowable primary disinfectant and corrects a reference for ozone under Section R309-520-11 to Part 4, Section 4.3.7 in the Recommended Standards for Water Works (commonly known as "Ten State Standards"), 2007 edition.

State statutory or constitutional authorization for this rule:

Section 19-4-104

Anticipated cost or savings to:

the state budget:

None--Since this amendment only adds ultraviolet light as an additional allowable primary disinfectant, there is no anticipated cost or savings to the state budget.

local governments:

None--Since this amendment only adds ultraviolet light as an additional allowable primary disinfectant, there is no anticipated cost or savings to public drinking water systems managed by local governments.

small businesses and persons other than businesses:

None--Since this amendment only adds ultraviolet light as an additional allowable primary disinfectant, there is no anticipated cost or savings to small businesses such as consulting engineering companies.

Compliance costs for affected persons:

None--Since this amendment only adds ultraviolet light as an additional allowable primary disinfectant, there is no anticipated cost or savings to individual consumers of water from public water systems.

Comments by the department head on the fiscal impact the rule may have on businesses:

The department agrees that the proposed changes to this rule will have little to no detrimental impact on existing water systems or to new public water systems. William Sinclair, Acting Executive Director.

The full text of this rule may be inspected, during regular business hours, at the Division of Administrative Rules, or at:

Environmental Quality
Drinking Water
150 N 1950 W
SALT LAKE CITY UT 84116-3085

Direct questions regarding this rule to:

Bill Birkes at the above address, by phone at 801-536-4201, by FAX at 801-536-4211, or by Internet E-mail at [e-mail]

Interested persons may present their views on this rule by submitting written comments to the address above no later than 5:00 p.m. on:

04/14/2009

This rule may become effective on:

04/21/2009

Authorized by:

Ken Bousfield, Director

RULE TEXT

R309. Environmental Quality, Drinking Water.

R309-520. Facility Design and Operation: Disinfection.

R309-520-5. Allowable Primary Disinfectants.

Primary disinfection is defined as the means for providing adequate levels of inactivation of pathogenic micro organisms within the treatment process. Its effectiveness is measured through the "CT" values. Only four[three] disinfectants; chlorine (gaseous and liquid hypochlorites), ozone, ultraviolet light, and chlorine dioxide are allowable for primary disinfection.

 

R309-520-11. Ozone.

Proposals for use of ozone disinfection shall be discussed with the Division prior to the preparation of final plans and specifications.

Part 4, Section 4.3.7, Ozone[Interim Standard - Ozonation, page xxxi], in the Recommended Standards for Water Works (commonly known as "Ten State Standards"), 2007 edition is hereby incorporated by reference and shall govern the design and operation of disinfection facilities utilizing ozone. This document is published by the Great Lakes-Upper Mississippi River Board of Public Health and Environmental Managers. A copy is available in the office of the Division for reference.

 

KEY: drinking water, primary disinfectants, secondary disinfectants, operation and maintenance

Date of Enactment or Last Substantive Amendment: April, 2009[August 15, 2000]

Notice of Continuation: March 13, 2007

Authorizing, and Implemented or Interpreted Law: 19-4-104