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Changes on the Horizon: Safe Drinking Water Act glass of water

As summarized below, several Safe Drinking Water Act (SDWA) regulations are scheduled for changes or evaluations over the next few years.

Contaminant Candidate List, Perchlorate & Volatile Organic Compounds

An updated Contaminant Candidate List (CCL4) proposal will be released in October 2013 and is slated to be finalized in 2014. The USEPA also plans to have a proposal for regulating Perchlorate (ClO4) by February 2013, with a final decision on the matter in early 2015. Meanwhile, proposed changes to potentially carcinogenic Volatile Organic Compounds (VOC) regulations will be released in October 2013 and should be finalized two years later in 2015. Click here for more information about VOCs.

Revised Total Coliform Rule

The Revised Total Coliform Rule (RTCR) should be finalized by November of this year. Previously, the presence of total coliforms required monthly public notification meetings. Under the proposed rule, public notification will be necessary only when an E.coli Maximum Contaminant Level (MCL) violation occurs, or when a public water system fails to conduct the required assessment and corrective action.

Long-Term Lead and Copper Rule

The USEPA is also considering revisions to the Lead and Copper Rule via the development of the Long-Term Lead and Copper Rule (LT-LCR). The potential changes could affect at-the-tap sampling, how sampling sites are selected, sampling protocol, and optimized corrosion control provisions. The proposal is expected to come out in October of this year. The final decision on the new LT-LCR regulation requirements is expected in late 2014.

Long-Term 2 Enhanced Surface Water Treatment Rule

A review of the Long –Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR) is expected to start in January 2013 and continue through December 2015. The rule contains provisions to reduce risks from uncovered finished water reservoirs. It also requires that systems maintain certain protections to decrease the formation of by-products that result from chemical water treatment.

Consumer Confidence Report

The USEPA also plans to begin a review of its Consumer Confidence Report (CCR) regulations later this year. The review process is expected to take 12 to 14 months. Currently, every water system in the country is required to publish a CCR each year to give residents information about the water provided at their taps.

SDWA timeline

Unregulated Contaminant Monitoring Rule

Finally, the USEPA hopes to wrap up the next stage of its Unregulated Contaminant Monitoring Rule (UCMR3) later this year. After that, a two-year monitoring period of 30 contaminants will span between 2013 and 2015. The list of 30 includes new categories, such as hormones. A complete list of the UCMR3 list of 30 is provided below. The UCMR3 only directly applies to public water systems that serve more than 10,000 users. However, a random sample of systems that serve 10,000 users or less may also be selected for testing.

UCMR3 list of 30:

Hormones (6)

  • 17-α-ethynylestradiol
  • estriol
  • equilin
  • estrone
  • testosterone
  • 4-androstene-3,17-dione

Volatile Organic Compounds (9)

  • 1,2,3-trichloropropane
  • 1,3-butadiene
  • chloromethane
  • 1,1-dichloroethane
  • n-propylbenzene
  • bromomethane
  • sec-butylbenzene
  • chlorodifluoromethane (HCFC-22)
  • bromochloromethane (halon 1011)

Synthetic Organic Compound (1)

  • 1,4-dioxane

Metals (6)

  • vanadium
  • molybdenum
  • cobalt
  • strontium
  • oxyhalide anion
  • chlorate

Perfluorinated Compounds (6)

  • perfluorooctane sulfonic acid (PFOS)
  • perfluorooctanoic acid (PFOA)
  • perfluorononanoic acid (PFNA)
  • perfluorohexane sulfonic acid (PFHxS)
  • perfluoroheptanoic acid (PFHpA)
  • perfluorobutanesulfonic acid (PFBS)

Microbiological Contaminants (2)

  • enteroviruses
  • noroviruses



If you have any questions concerning the content of this newsletter,
please contact Heather Syverson at 701-364-9111 or Heather.Syverson@ae2s.com.
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