Information provided for informational purposes only

Note: This information is provided for reference purposes only. Although the information provided here was accurate and current when first created, it is now outdated.


This web site provides query access to over 200 million monitoring records originally reported to EPA via the Legacy STORET System.


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Effluent Statistic
Code Name Print Format
I Average Concentration AC
J Minimum Concentration LC
K Maximum Concentration HC
M Average Loading (lbs/day assumed) AL
P Minimum Loading (lbs/day assumed) LL
Q Maximum Loading (lbs/day assumed) HL
R Number of Exceptions NE
T Frequency of Analysis FA
W Type of Sampling ST
! Minimum Concentration (30 days) LCX
? Maximum Concentration (30 days) HCX
@ Maximum Loading (30 days) HLX
& Mass Units. MU
= Number of analyses #A