EarthSoft, Inc

Montana EQuIS water quality exchange (MT-eWQX) support


Source: EarthSoft, Inc

This site provides guidance for submitting water quality data to Montana DEQ’s MT-eWQX database. MT-eWQX is DEQ’s main repository for storing water quality monitoring data, which includes physical, chemical, biological, and habitat data from a variety of projects across the state. Data submitted to MT-eWQX gets submitted to EPA’s National STORET Warehouse, which fulfills the STORET requirement of environmental monitoring projects funded by federal monies, such as 319 grants or 106 funds.

MT-eWQX ListServ Receive important updates about MT-eWQX, including when updated reference value lists are posted, anticipated outages for maintenance, or training opportunities.

Step 1: Prepare Your EDD

Environmental monitoring data must be submitted to MT-eWQX in a specific format. Data providers are required to download the MT-eWQX EDD and populate it with their project’s data. Detailed guidance for populating the MT-eWQX EDD can be found in the MT-eWQX Guidance Manual.


MT-eWQX Guidance Manual

Appendices (Reference Values)

STORET to WQX Characteristics with Method Speciation

Step 2: Validate Your EDD

After Step 1 is complete, your MT-eWQX EDD is ready for data validation using the EQuIS Data Processor (EDP). The EDP is a standalone application that allows data providers to check their EDD files prior to submission to ensure they are formatted as described in the MT-eWQX Guidance Manual. If the EDP detects errors, the errors will be identified and most can be corrected directly within the EDP. After the errors are corrected, the EDP must be re-run to ensure that no errors remain. Your EDD must have a clean validation from the EDP prior to data submission to DEQ.

Information specific to using the EDP can be found within the EDP Guidance Manual, which will be published by November 1, 2009.

Step 3: Submit Your EDD

After Step 2 is complete and your EDD has no errors, you’re ready to submit your EDD to MT-eWQX. In order to submit an EDD, you must have an:

Information about all the above requirements can be found within the MT-eWQX Guidance Manual.

Follow the link below to submit your EDD to MT-eWQX (send file to Jolene McQuillan):

Additional Information

To access data submitted to MT-eWQX, go to EPA’s National STORET Warehouse. The following link provides guidance on how to download data from the Warehouse: STORET Warehouse Guidance.

The following field forms are provided by DEQ to assist with project data management:

Information for Laboratories

Laboratory MT-eWQX EDD: This link is provided to assist laboratories in producing a MT-eWQX compatible EDD. The requirements provided in this document are specific for laboratories and should not be used by data providers submitting data to DEQ.

The following templates are provided by DEQ to assist labs in producing a MT-eWQX compatible EDD:

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