LT2 Monitoring
LT2 Monitoring
The Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR or LT2 rule) addresses the health effects associated with Cryptosporidium in surface water used as a drinking water supply. All public water systems using surface water or groundwater under the direct influence of surface water are required to monitor under LT2.
EMSL Qualifications:
- EMSL is fully approved by the USEPA for LT2 Round 2 Cryptosporidium monitoring program using EPA method 1623/1623.1.
- EMSL is cerified in most states to analyze LT2 samples.
- EMSL is a leading laboratory with the largest sample capacity for LT2 testing.
- EMSL surpassed other laboratories participating in the most recent EPA’s performance testing (PT) studies with 72.5% to 68.0% for recoveries of Cryptosporidium (national average is 59.5%).
Frequently Asked Questions:
- Can you take samples from my state?
We can take Cryptosporidium samples from most states. Please contact Aquatic Sciences Laboratory for our capability to analyze Cryptostropridium in your state.
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Schedule
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System Serving Population
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Begin Date
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Tests to perform
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Schedule 1
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≥100,000
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April 1, 2015
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Cryptosporidium,
E. coli, Turbidity
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Schedule 2
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50,000 - 99,000
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Oct. 1, 2015
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Cryptosporidium,
E. coli, Turbidity
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Schedule 3
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10,000 - 49,999
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Oct. 1, 2016
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Cryptosporidium,
E. coli, Turbidity
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Schedule 4
(E. Coli)
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<10,000
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Oct. 1, 2017
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E. coli
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Schedule 4
(Crypto)
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<10,000
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April 1, 2019
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Cryptosporidium
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