Regulations

25.0420.174 Filtration Sampling Requirements.

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25.0420.175 Reporting and Record Keeping Requirements.

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25.0420.2 Definitions.

Except as provided below, the provisions of 4…

25.0420.201 General Public Notification Requirements.

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25.0420.202 Tier 1 Public Notice – Form, Manner, and Frequency of Notice.

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25.0420.203 Tier 2 Public Notice – Form, Manner, and Frequency of Notice.

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25.0420.204 Tier 3 Public Notice – Form, Manner, and Frequency of Notice.

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25.0420.205 Content of the Public Notice.

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25.0420.206 Notice to New Billing Units or New Customers.

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25.0420.207 Special Notice of the Availability of Unregulated Contaminant Monitoring Results.

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25.0420.208 Special Notice for Exceedance of the SMCL for Fluoride.

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25.0420.209 Special Notice for Nitrate Exceedances Above MCL by Non-community Water Systems (NCWS), Where Granted Permission by the Primacy Agency Under 141.11(d).

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25.0420.21 Coliform Sampling.

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25.0420.210 Notice by Primacy Agency on Behalf of the Public Water System.

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25.0420.22 Turbidity Sampling and Analytical Requirements.

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25.0420.23 Inorganic Chemical Sampling Analytical Requirements.

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25.0420.24 Organic Chemicals Sampling and Analytical Requirements.

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25.0420.25 Analytical Methods for Radioactivity.

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25.0420.26 Monitoring Frequency for Radioactivity in Community Water Systems.

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25.0420.27 Alternate Analytical Techniques.

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25.0420.28 Certified Laboratories.

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25.0420.29 Monitoring of Consecutive Public Water Systems.

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25.0420.3 Coverage.

These regulations shall apply to each public…

25.0420.30 Total Trihalomethanes Sampling, Analytical and Other Requirements.

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25.0420.31 Reporting Requirements.

Except as expanded below, the provisions of 4…

25.0420.32 Public Notification.

Refer to sections 25.0601.201-25.0601.210 of…

25.0420.33 Record Maintenance.

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25.0420.35 Reporting and Public Notification for Certain Unregulated Contaminants.

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25.0420.4 Variances and Exemptions.

AS-EPA removed the provisions relating to Var…

25.0420.40 Monitoring Requirements for Unregulated Contaminants.

Public water systems must comply with provisi…

25.0420.41 Special Monitoring for Sodium.

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25.0420.42 Special Monitoring for Corrosivity Characteristics.

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25.0420.43 Prohibition on Use of Lead Pipes, Solder, and Flux.

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25.0420.5 Siting Requirements and Plan Review

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25.0420.50 Maximum Contaminant Level Goals for Organic Contaminants.

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25.0420.501 Who is subject to the requirements of subpart T?

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25.0420.502 When must my system comply with these requirements?

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25.0420.503 What does subpart T require?

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25.0420.51 Maximum Contaminant Level Goals for Inorganic Contaminants.

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25.0420.510 Is my system subject to the new finished water reservoir requirements?

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25.0420.511 What is required of new finished water reservoirs?

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25.0420.52 Maximum Contaminant Level Goals for Microbiological Contaminants.

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25.0420.520 Is my system subject to the updated watershed control requirements?

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25.0420.521 What updated watershed control requirements must my unfiltered system implement to continue to avoid filtration?

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25.0420.522 How does the State determine whether my system’s watershed control requirements are adequate?

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25.0420.53 Maximum Contaminant Level Goals for Disinfection Byproducts.

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25.0420.530 What is a disinfection profile and who must develop one?

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25.0420.531 What criteria must a State use to determine that a profile is unnecessary?

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25.0420.532 How does my system develop a disinfection profile and when must it begin?

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25.0420.533 What data must my system collect to calculate a disinfection profile?

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