(a class of N-DBPs) as a contaminant group.
Currently, no MCLs exist for N-DBPs, but
five nitrosamines are on the agency’s
Contaminant Candidate List.
WaterRF studies have revealed that formation,
fate, and effective control of N-DBPs differ
from that of non-nitrogenous DBPs, and that
efforts to control the former may increase
the formation potential of the latter. By better
understanding this trade-off, researchers
can help utilities design more effective
Two projects are underway to better
understand and reduce N-DBP occurrence
and formation: “Development of a Protocol
to Predict the Formation of Nitrosamines
While Minimizing the Formation of
Regulated DBPs” (project #4180), and
“Fate of Non-Regulated DBPs in Distribution
Systems” (project #4242).
Long-Term 2 Enhanced Surface Water
Treatment (LT2) Rule
While source water protection (SWP) is
important to delivering safe drinking
water, no federal mandate or coordinated
framework currently exists, leaving water
utilities on their own to develop and advocate
effective SWP programs.
The USEPA has until 2015 to revise its LT2
Rule, and many industry insiders expect
increased emphasis on source water
monitoring and protection.
WaterRF’s Developing a Vision and
Roadmap for Source Water Protection
for Drinking Water Utilities, (order/
project #4176), is intended to serve as a
feasible, focused path for promoting SWP
for drinking water utilities.
Additionally, Watershed Pathogen Modeling
for Risk Management and Load Estimations
(2010, order/project #3124), developed an
online, event-based model that allows utilities
to estimate likely ranges of concentrations and
loads for key pathogens. WaterRF is presenting
the model to key USEPA staff in 2011.
The Foundation’s most recently published
study related to SWP, Selecting and
Standardizing the Most Appropriate
Tool for Regulatory Cryptosporidium
Genotyping (Genotyping Tools) (order/
project #4179) developed simple, sensitive,
specific, and validated Cryptosporidium
genotyping tools to allow the water industry
to assess human infective Cryptosporidium
oocysts in source water and to then track
the contamination to host groups in the
As the USEPA continues to evaluate existing
and potential new regulations that impact
water utility operations and compliance
costs, WaterRF will participate in the dialogue,
bringing relevant science to regulators in an
effort to promote pragmatic rulemaking on
behalf of its subscribers, and will continue to
provide utilities with the most cost-effective
compliance strategies and tools.