Are you a Public Water System (PWS) required to monitor for Cryptosporidium under the LT2 Enhanced Surface Water Treatment Rule? Are you or your Water Quality Manager interested in knowing the true risk posed by Cryptosporidium and Giardia that are with all certainty in your surface water sources at measurable concentrations? Do you believe that the risk is negligible based on the Phase 1 monitoring that your PWS conducted?
If your answer to any of these questions is yes then it will interest you to read the new post under the Current Topics tab on this website. The risk due to Cryptosporidium and Giardia in every surface water used by PWSs throughout the USA (and elsewhere) is not negligible and it is measurable. An efficient monitoring program for effective use of a monitoring budget is achievable. The cost of the program will be greater than for meeting the minimum requirements of Phase 2 monitoring. BUT, the data produced will actually be usable and will provide concrete and reliable data for guiding watershed management and treatment system management planning, in addition to an accurate definition of where each source stands in the risk spectrum...high, low, or in between.
Elements of an efficient and effective monitoring plan include:
For more information or answers to questions, contact.
If your answer to any of these questions is yes then it will interest you to read the new post under the Current Topics tab on this website. The risk due to Cryptosporidium and Giardia in every surface water used by PWSs throughout the USA (and elsewhere) is not negligible and it is measurable. An efficient monitoring program for effective use of a monitoring budget is achievable. The cost of the program will be greater than for meeting the minimum requirements of Phase 2 monitoring. BUT, the data produced will actually be usable and will provide concrete and reliable data for guiding watershed management and treatment system management planning, in addition to an accurate definition of where each source stands in the risk spectrum...high, low, or in between.
Elements of an efficient and effective monitoring plan include:
- Sample volumes...enough to give ca. 50-75% of analytical results NOT zero
- Analyze all samples for both Cryptosporidium and Giardia
- Measure the recovery efficiency for each sample
- Use the measured recovery efficiency to calculate concentration
- Express all data as concentration...that is...organisms/L
- Analyze all samples for all Cryprosporidium and all Giardia regardless of type or condition
For more information or answers to questions, contact.