Changes are on the way for total coliform testing MCL's.
This will affect all systems classified as community water systems
or non-community water systems - approximately 154,000 PWS's around
the country with over 300 million people served. The new rule
will provide criteria for well ran systems to qualify for reduced
monitoring, along with increased monitoring for high-risk systems
with bad compliance history. The proposed rule sets a health goal
for E. coli and eliminates the MCL for total coliform by replacing
with treatment technique requirements and corrective actions.
The proposed E. coli MCLG and MCL is zero (0). Positive coliform
results would trigger an assessment for any sanitary defects
followed by correction. A change in the rule will be the
elimination of monthly public notifications on the presence of
total coliforms. Once revised public notification would only
be required when a positive E. coli violation occurs or a PWZ fails
to conduct a required assessment and corrective actions. It is
anticipated that final action on this rule will occur around
November 2012.
Have Questions / Need Help?
Should you have any questions regarding the TCR revisions and
how they may affect your community, please feel free to contact our
Potable Water Team Leader, Pat Zaharako, P.E., at 800-289-1177 or
by email at pzaharako@contactcei.com.
