Existing COGCC monitoring program (Rule 609) [1]


Groundwater monitoring

Manual periodic sampling and testing by COGCC.

Fewer manual sampling plus real-time continuous automated monitoring.

Groundwater contamination

Sampling before and after oil & gas well drilling. At all other times, public or personnel reporting to COGCC based on visual, olfactory or gustatory suspicion of contamination.

CWW data continuously scanned and analyzed by anomaly detection algorithm to look for contamination events. Automated alerts to CWW personnel in case of an anomaly detection.

Monitoring location

Samples collected and tested from two groundwater sources within a 0.8 km radius or reported event or proposed oil & gas well.

Monitoring stations selected and installed in close vicinity or midst of oil and gas operations.

Monitoring schedule

Sampling in case of a reported contamination suspicion or once within 12 months prior to a proposed oil and gas well drilling. Two subsequent sampling routines: One within 6 - 12 months and the other within 5 - 6 years after the well completion.

Data collected and published on the website once every hour.

Data management and analysis


Automate, data analysis using sophisticated event detection algorithms.

Data access

Upon request and the COGCC website

Easy-to-access and publically available CWW website.

Historical data


All historical data stored on the CWW database and can be easily accessed through the website.