Category: Water Quality

Read the ReportThe Division of Water Quality worked with Animas Environmental Services to conduct an E. coli analysis in the San Juan River watershed. The study relied on existing monitoring data collected under EPA-approved quality assurance project plans. The consultant made the following recommendations based on its data analysis: Create a multijurisdictional protocol for collecting, assembling, and sharing E. coli datasets. Develop a regional or watershed E.

Gunnison Bend Reservoir is located on the lower Sevier River near Delta in Millard County. DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent Gunnison Bend monitoring information below.Looks Good!There are no current health advisories for this water body. Conditions may change quickly. Check before entering the water

Our program develops plans to ensure clean water for drinking, recreation, fish and wildlife, and agriculture. We collaborate with stakeholders and partners, collect and analyze water quality and ecological data, identify pollution sources, and select projects and management practices to reduce pollution and restore waterways. We use total maximum daily load (TMDL) studies, nine-element watershed plans, and other planning mechanisms

The Division of Water Quality (DWQ) prioritized waterbodies for water quality restoration and protection over the next 10 years. Restoration and protection planning will help facilitate robust and efficient monitoring, more effective partnerships, watershed group development, strategic implementation, and clarity in protecting and restoring Utah’s waters. DWQ has outlined our approach to the prioritization in Utah’s Prioritization 2.0: Approach to Restoration and

On this page: Water quality monitoring and assessment  |  Our monitoring programs  |  Assessment: How we decide if waters are healthyWater quality monitoring and assessment The Division of Water Quality regularly monitors and assesses Utah’s streams, rivers, lakes, and reservoirs to see whether they are supporting their designated beneficial uses, such as drinking water, recreation, aquatic life, and agricultural use

This permit covers discharges of biological pesticides, biochemical pesticides, and chemical pesticides as defined in the permit to surface waters of the state. In addition, the discharge of residues resulting from the application of biological agents and chemicals are covered under the permit.

Newcastle Reservoir is located southeast of Newcastle in Iron County. DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent monitoring information below. UpdatesOctober 13, 2026: Water quality monitoring has ended for the season Recreational water quality monitoring in this waterbody has ended for the season. Routine monitoring

Baker Reservoir is located approximately 25 miles northwest of St. George in Washington County. DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent monitoring information below.Warning AdvisoryHarmful Algae Present Do not swim or water ski Avoid areas of algae when boating Keep animals away Do not drink the

Panguitch Lake is located southwest of Panguitch City in Garfield County. DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent monitoring information below. Warning AdvisoryHarmful Algae Present Do not swim or water ski Avoid areas of algae when boating Keep animals away Do not drink the water Clean fish

Matt Warner Reservoir is located on Diamond Mountain, north of Vernal in Uintah County. DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent monitoring information below.Warning AdvisoryHarmful Algae Present Do not swim or water ski Avoid areas of algae when boating Keep animals away Do not drink the water

Calf Creek is located within the Grand Staircase-Escalante National Monument. DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent monitoring information below.Check FirstHarmful algae mats may be present Do not touch or eat algae mats Keep dogs and young children away from mats Wading and paddling are ok

This webpage is updated monthly with information provided by Zion National Park. The Utah Division of Water Quality does not routinely conduct HAB sampling within the Virgin River Watershed. If you have additional questions, please contact Zion National Park by calling (435) 772-3256.

Yuba Lake is located approximately 25 miles south of Nephi and not far from I-15 in Juab and Sanepete counties. DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent monitoring information below.Looks Good!There are no current health advisories for this water body. Conditions may change quickly. Check before

Willard Peak Pond is located inside of Willard Bay State Park at 900 W. 650 N., Willard in Box Elder County. It is west of I-15, exit 357. DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent monitoring information below. Warning AdvisoryHarmful Algae Present Do not swim or water

Willard Bay Reservoir is located at 900 W. 650 N., Willard in Box Elder County. It is west of I-15, exit 357. DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent monitoring information below. Looks Good!There are no current health advisories for this water body. Conditions may change

Weber River runs along I-84 in Weber, Davis, and Morgan counties. DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent Weber River monitoring information below. Looks Good!There are no current health advisories for this water body. Conditions may change quickly. Check before entering the water and know