Chapter 3745-82 Secondary Maximum Contaminant Levels

3745-82-01 Definitions.

As used in this chapter of the Administrative Code:

(A) Except as otherwise noted, the definitions in rule 3745-81-01 of the Administrative Code shall apply to this chapter.

(B) "Secondary maximum contaminant level" means the advisable maximum level of a contaminant in water which is delivered to the free-flowing outlet of the ultimate user of a public water system. Contaminants added to the water under circumstances controlled by the user, except those resulting from corrosion of piping and plumbing caused by water quality, are excluded from this definition.

R.C. 119.032 review dates: 03/17/2011 and 03/17/2016
Promulgated Under: 119.03
Statutory Authority: 6109.04
Rule Amplifies: 6109.01 , 6109.03 , 6109.04
Prior Effective Dates: 11/26/80

3745-82-02 Secondary maximum contaminant levels.

The secondary maximum contaminant levels for public water systems are as follows

Contaminant Level

Aluminum*. . . . . . . . . . . . . . . . . . . . . 0.05 to 0.2 mg/L

Chloride . . . . . . . . . . . . . . . . . . . . . 250 mg/L

Color . . . . . . . . . . . . . . . . . . . . . . 15 color units

Corrosivity . . . . . . . . . . . . . . . . . . . non-corrosive

Fluoride . . . . . . . . . . . . . . . . . . . . . 2.0 mg/L

Foaming Agents . . . . . . . . . . . . . . . . . . 0.5 mg/L

Iron . . . . . . . . . . . . . . . . . . . . . . . 0.3 mg/L

Manganese . . . . . . . . . . . . . . . . . . . . 0.05 mg/L

Odor . . . . . . . . . . . . . . . . . . . . . . . 3 threshold odor number

pH . . . . . . . . . . . . . . . . . . . . . . . . 7.0 - 10.5

Silver . . . . . . . . . . . . . . . . . . . . . . 0.1 mg/L

Sulfate . . . . . . . . . . . . . . . . . . . . . 250 mg/L

Total dissolved solids (TDS) . . . . . . . . . . . 500 mg/L

Zinc . . . . . . . . . . . . . . . . . . . . . . . 5 mg/L

*The secondary maximum contaminant level for aluminum is a range, with the precise level applicable to each public water system to be determined by the director.

Eff 11-26-80; 3-1-88; 9-13-93
Rule promulgated under: RC Chapter 119.
Rule amplifies: RC 6109.04

3745-82-03 Monitoring for compliance with secondary maximum contaminant levels.

(A) Except for fluoride, the parameters in this chapter shall be monitored at the intervals prescribed in Chapter 3745-81 of the Administrative Code or rule 3745-83-01 of the Administrative Code, except that, if the director prescribes in written notice to the affected system other intervals necessary to protect the public health or welfare, the parameters shall be monitored at the intervals prescribed in the written notice.

(B) Public water systems that do not add supplemental fluoride.

(1) Monitoring and compliance determinations for the secondary maximum contaminant level for fluoride specified in rule 3745-82-02 of the Administrative Code shall be as follows:

(a) Public water systems may use the monitoring conducted for compliance with the maximum contaminant level in paragraph (B) of rule 3745-81-11 of the Administrative Code to determine compliance with the secondary maximum contaminant level for fluoride. The required monitoring to determine compliance with the maximum contaminant level is specified in rule 3745-81-23 of the Administrative Code.

(b) If a public water system collects more than one sample per year, it shall be in compliance when the average of quarterly averages of all samples collected at each entry point to the distribution system during a calendar year does not exceed the secondary maximum contaminant level for fluoride.

(c) Public water systems that collect one sample annually or less frequently shall be in compliance when the most recent sample does not exceed the secondary maximum contaminant level for fluoride. When a public water system is required to take a confirmation sample under paragraph (F) of rule 3745-81-23 of the Administrative Code, the system shall be in compliance if the average of the initial and confirmation sample results does not exceed the secondary maximum contaminant level for fluoride.

(C) Public water systems that add supplemental fluoride.

(1) Monitoring and compliance determinations for the secondary maximum contaminant level for fluoride specified in rule 3745-82-02 of the Administrative Code shall be as follows:

(a) Public water systems shall use the monitoring conducted for compliance with rule 3745-83-01 of the Administrative Code to determine compliance with the secondary maximum contaminant level for fluoride.

(b) A public water system shall be in compliance when the running annual average of monthly averages of all samples collected at each entry point to the distribution system as determined monthly does not exceed the fluoride secondary maximum contaminant level.

(c) Public water systems adding fluoride shall maintain a fluoride range of 0.8 milligrams per liter to 1.3 milligrams per liter in their finished water pursuant to section 6109.20 of the Revised Code. A public water system shall notify Ohio EPA within forty-eight hours of any instance in which this range is not maintained. If a public water system has four or more days during a month in which the daily average fluoride concentration is outside the range of 0.8 milligrams per liter to 1.3 milligrams per liter the public water system is in violation, unless the system has approval from the director to perform a tracer study and the fluoride level in the distribution system does not exceed 2.0 milligrams per liter.

(2) Public water systems that add supplemental fluoride shall keep a daily record of the amount of fluoride compound added, the quantity of water fluoridated, the calculated fluoride dosage, and the fluoride content of the water as delivered to their customers.

(3) Public water systems that lose their capability to accurately determine the fluoride content of their finished water due to laboratory equipment failure or malfunction, shall cease feeding all fluoride compounds and notify the Ohio EPA within forty-eight hours with a tentative schedule for re-establishing laboratory capabilities.

(4) Public water systems that lose their capability to feed fluoride shall notify Ohio EPA within forty-eight hours and provide a tentative schedule for resumption of acceptable fluoridation.

(5) A public water system determined to exceed 10 mg/L due to over-feed events may be required to issue a no-use advisory.

(D) A public water system determined to exceed the secondary maximum contaminant level for fluoride under paragraph (B) or (C) of this rule shall notify the persons served by the public water system in accordance with paragraph (D) of rule 3745-81-32 of the Administrative Code.

Replaces: Former 3745-82-03

R.C. 119.032 review dates: 03/17/2011 and 03/17/2016
Promulgated Under: 119.03
Statutory Authority: 6109.04
Rule Amplifies: 6109.03 , 6109.04
Prior Effective Dates: 11/26/80, 3/29/88, 5/22/89