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N.C. Department of Environment and Natural Resources

NC Department of Environment and Natural Resources
Water Quality - MUR

Water Quality

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2007 Methods Update Rule (MUR)

The US EPA issued Guidelines for Establishing Test Procedures for the Analysis of Pollutants under the Clean Water Act; National Primary Drinking Water Regulations; Analysis and Sampling Procedures; Final Rule (3/12/2007). This rule became effective April 11, 2007. 

MUR Resources

2007 Methods Update Rule Announcement Letter (4/19/2007) 

Federal Register Notices

Guidelines Establishing Test Procedures for the Analysis of Pollutants - 40 CFR Part 136 (3/12/2007)

Guidelines Establishing Test Procedures for the Analysis of Pollutants - 40 CFR Part 136 (3/26/2007) 

Reference Tables

Deleted and Equivalent Methods for Clean Water Act (CWA) Table

New Test Methods for Clean Water Act (CWA) Table(per 3/12/2007 Federal Register)

New Test Methods for Clean Water Act (CWA) Table (per 3/26/2007 Federal Register)

Holding Time and Preservation Changes Summary Table 

Oil and Grease Methods

Letter Describing Federal Register Changes for Oil and Grease

No freon use after April 11, 2007

EPA email regarding Hexane purity for EPA 1664

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