The City of North Liberty Water Department (NLWD) produces, on average, 474,000 gallons per day. Our capacity is 1,968,000 GPD. We take pride in producing clean water for drinking, fire protection and industrial use.

Well Supply

North Liberty gets its water from four (4) Silurian aquifers and from two (2) Jordan aquifers. Approximately 75% of the water is produced from the Jordan aquifers. We pump approximately 750 gallons per minute (GPM) from our two Jordan wells. On average the Jordan wells run 8.4 hours per day. The Silurian wells can pump from 100 (GPM) to 175 (GPM) depending on which well is operating. The four Silurian wells are alternated daily with the Jordan wells for blending purposes.

Water Towers

Two variable-speed (high service) pumps replenish the water towers on demand. These pumps were part of a recent plant upgrade and are capable of producing over 1,000 gallons per minute. The pumps are alternated on a weekly basis so only one runs at a time.

The two water towers can hold 600,000 gallons of water when full. The 200,000-gallon tower is located at the corner of Cherry and Main Streets. The 400,000-gallon tower is located on 240th Street.

Water Quality Reports

We monitor daily for water quality at the Water Treatment Plant as well as have our water analyzed on a regular basis through the University of Iowa Hygienic Laboratory. Water quality is our first priority.

2014 Water Quality Report (PDF)
2013 Water Quality Report (PDF)
2012 Water Quality Report (PDF)
2011 Water Quality Report (PDF)
2010 Water Quality Report (PDF)
2009 Water Quality Report (PDF)
2008 Water Quality Report (PDF)
2007 Water Quality Report (PDF)
2006 Water Quality Report (PDF)
2005 Water Quality Report (PDF)