www.ecoli.utah.gov
Sampling Data
The Utah Division of Water Quality (DWQ) samples water for levels of E. coli. All surface waters contain some E. coli whether or not they have been monitored or an advisory has been issued. DWQ, in coordination with the Utah E. coli Workgroup, has focused monitoring efforts on highly recreated water bodies currently protected for direct and indirect human contact. The result values are screened to make sure E. coli counts are below a certain threshold to protect for human health. There are different thresholds for water bodies protected for direct contact, named 2A water bodies, and water bodies protected for indirect contact, named 2B water bodies. Additionally, DWQ routinely monitors for E. coli in rivers and streams sampled around the State. All current and archived E. coli data are stored on this page.
For more information about the sampled water bodies, screening values and what the result numbers mean, please visit the Home link above.
Current Sampling Data
Lakes and Reservoirs
Currently, the following water bodies are being monitored for E. coli. Three samples are collected at each site on a regular basis.
Water bodies designated as 2A are monitored to not exceed a one-time result of 409 most probable number of E. coli per 100mL of water sample (MPN). If a result exceeds 409 MPN (screening value) at a location, the DWQ recommends to avoid swimming in that area.
Several 2B water bodies are also monitored to not exceed a one-time result of 668 most probable number of E. coli per 100mL of water sample (MPN). These sites are not designated by the State of Utah as direct contact water bodies, but are still protected for indirect contact (ie. boating). If a result exceeds 668 MPN at a 2B location, the DWQ recommends to avoid direct contact with the water in that area.
Since some of the 2B water bodies are more highly recreated than others the State of Utah has decided to use the 2A screening value (409 MPN) which is more protective of human health. These water bodies are listed in the table below but have been identified with an *.
Results are updated frequently. All results collected so far at each water body have been stored in a PDF file in the "Compiled Data" column. Navigate sampling locations alphabetically, or scroll through the table below.
A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
| Location (A-Z) | Designation | Last Date Sampled | Results of Last Sample | Comments | Local Health Dept. | Compiled Data |
|---|---|---|---|---|---|---|
| Bountiful Pond | 2B | 2011 | Davis | |||
| Calder Reservoir | 2B | 2011 | Tricounty | |||
| Causey Reservoir | 2B | 2011 | Weber-Morgan | |||
| Clinton Pond | 2B | 2011 | Davis | |||
| Cutler Reservoir | 2B | 2011 | Samples collected at Benson Marina Day Use area | Bear River | ||
| East CanyonReservoir | 2A | 2010 | Samples collected at Pratt Group Pavilion and Taylor Hollow | Weber-Morgan | ||
| Farmington Pond | 2B | 2011 | Davis | |||
| Highland Glen Park | 2B | 2011 | Utah | |||
| Holmes Reservoir | 2B | 2011 | Davis | |||
| *Huntington State Park North | 2B* | 2011 | * | Samples collected East and West of Boat Launch Ramp | Southeast | |
| Joe's Valley State Park | 2A | 2011 | Samples collected at Marina Day Use Area and Pavilion Group Site | Southeast | ||
| Kaysville Pond/ Botanical Garden | 2B | 2011 | Davis | |||
| Ken's Lake Beach | 2A | 2011 | Samples collected at Lake Beach and Lake West | Southeast | ||
| Maple Dell Boyscout Camp | 2B | Utah | ||||
| Matt Warner Reservoir | 2B | 2011 | Tricounty | |||
| Maybey Pond | 2B | 2011 | Davis | |||
| Millsite Reservoir | 2A | 2011 | Samples collected West of State Park at Beach, and at Day Use Area near Pavilion | Southeast | ||
| Mueller Park | 2B | 2011 | Davis | |||
| Otter Creek Reservoir | 2B | 2010 | Central | |||
| Payson Lake | 2B | Utah | ||||
| Pelican Lake | 2B | 2011 | Tricounty | |||
| Pineview Reservoir | 2A | 2011 | Samples collected at Anderson Cove, Cemetery Beach, and Middle Inlet | Weber-Morgan | ||
| Piute State Park | 2B | 2010 | Samples collected at West Beach | Central | ||
| Salem Pond | 2A | 2011 | Due to repeated past samples exceeding the 409 mpn threshold, the City of Salem has posted advisory notices. These are advisory only - the beach is still open. Samples collected at Knoll Park Beach, North Arm, and South Arm. |
Utah | ||
| *Scofield State Park | 2B* | 2011 | * | Samples collected at Madsen Bay and Mountain View | Southeast | |
| Spanish Fork Reservoir | 2B | 2011 | Utah | |||
| Spring Lake | 2B | Utah | ||||
| Steed Pond | 2B | 2011 | Davis | |||
| Syracuse Pond/Jensen Nature Park | 2B | 2011 | Davis | |||
| Utah Lake | 2B | 2010 | Samples collected at State Park | Utah | ||
| Weber Basin Job Corp | 2B | 2011 | Davis | |||
| Willard Bay State Park | 2A | 2011 | Samples collected at Eagle and Pelican Beach | Bear River | ||
| Yuba Lake State Park | 2A | 2011 | Samples collected at Eagle View (East Beach), North Beach, Painted Rocks, and West Beach | Central |
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Rivers and Streams
Currently, the following rivers and streams are being monitored for E. coli.
These data are collected and used in Total Daily Maximum Load analyses and 303 (d) impairment listings, or de-listings. All result values collected will be stored in a PDF file in the "Compiled Data" column. More sites that are not impaired but currently sampled for E. coli as part of other projects and programs, will be added as the data are compiled.
| Location (A-Z) | Impairment Status | Comments |
|---|---|---|
| Emmigration Creek | TMDL in progress | For more information visit the DWQ Monitoring Bacteriological Special Areas of Focus Web page |
| North Fork of the Virgin River | Impaired for E. coli | For more information visit the DWQ Monitoring Bacteriological Special Areas of Focus Web page |
| Parley's Creek | Impaired for E. coli | For more information visit the DWQ Monitoring Bacteriological Special Areas of Focus Web page |
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Archived Sampling Data
Revised: May 21, 2012