The Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR) is being
proposed to supplement existing regulations to reduce disease incidences associated with
pathogenic microorganisms, in particular Cryptosporidium. Under the proposed rule,
public water systems that use surface water sources with a bin classification signifying
vulnerability to Cryptosporidium will be required to meet additional Cryptosporidium
removal requirements. The regulation provides a range of treatment and management
strategies that a system can conduct to meet additional removal requirements in the
"microbial toolbox". A watershed control program is listed as a strategy to meet additional
Cryptosporidium removal requirements. This paper presents approaches to developing a
watershed protection plan that meets the requirements of regulatory agencies and assists
in reducing the vulnerability to specific pathogenic organisms.
The approach to developing a watershed protection plan includes periodic evaluations of
data from existing and future water resources and an examination of future land
development activities. Management measures considered include programmatic needs,
rules, design standards, and regulations, as well as projects for the protection/preservation
of sensitive areas including drinking water intake locations. Watershed control activities
included in the presentation address:
developing and implementing a water quality and biologic monitoring plan;
using an integrated approach to protecting and sustaining the natural resources;
minimizing the stressors related to impacts from urbanization; and,
using water protection measures to comply with the National Pollutant Discharge
Elimination System (NPDES).
The use of a watershed control program as a tool to meet microbial removal/reduction
requirements allows utilities to comply with the future requirements of LT2ESWTR
while meeting objectives of other water protection programs (source water protection,
NPDES, etc.). Obtaining credits for microbial protection via watershed control measures
can potentially lead to significant cost savings and the elimination of major capital
improvements projects that might be required to meet additional Cryptosporidium
requirements. Includes table, figure.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 280 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 4 |
| Published : | 06/17/2004 |
