waterbycounty
EPA SDWIS

Weber County Water Quality

Weber County, Utah

Water Grade

D

Water Score

49.3

Violations

47

State Rank

#14

of 29 (1 = best)

EPA SDWIS Compliance

Drinking Water Quality

Water Quality Grade

D

Based on EPA compliance history and violation data

Water Score

49.3/100

Higher = better quality

Health Violations

47

Health-based violations

Violation Rate

17.5%

Systems with violations

Water Advisory: Weber County

Water Verdict

Weber County receives a below-average water quality assessment with a grade of D and a score of 49.3 out of 100. Residents should review their utility's Consumer Confidence Report and may want to consider additional water filtration for drinking.

Violation Context

Weber County has recorded 47 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 17.5 violations per 1,000 residents, this rate is high and signals significant water quality management issues.

Consumer Guidance

Residents of Weber County are advised to use filtered or bottled water for drinking and cooking until water quality improves. A reverse-osmosis or activated-carbon filter certified to remove the contaminants listed in the utility's Consumer Confidence Report is recommended. With 47 recorded health violations, staying informed about utility communications and boil-water notices is especially important. For long-term peace of mind, request your utility's latest Consumer Confidence Report and consider independent water testing if you have specific health concerns.

Regional Context

Weber County has water quality close to the average county in Utah. Its water score is within 1.6 points of the state average, meaning its overall water system performance is broadly representative of Utah as a whole.

Past 5 years

Water Quality Monitoring

Monitoring Sites

68

Active in the past 5 years

Measurements Recorded

18K

18,396 total readings

Most Measured

  • Physical
  • Nutrient
  • Inorganics, Minor, Metals

Categories measured most frequently

Data from the EPA Water Quality Portal (WQP), aggregating monitoring records from federal, state, and tribal sources. Each measurement represents a single sample analyzed for a specific characteristic (e.g., E. coli, pH, dissolved oxygen, nitrogen).

Live USGS Streamgage

River & Stream Conditions

Current Discharge

65.9cfs

May 14, 6:45 PM UTC

vs Long-Term Average

15%

Well below typical

Primary Streamgage

WEBER RIVER NEAR PLAIN CITY, UT

USGS site
10141000
Drainage area
2,081 sq mi
Long-term mean
443 cfs

One representative streamgage (the one with the largest drainage area in the county). Many counties have multiple gauges — this view summarizes the primary one. The long-term mean is the full-record annual average; "% of typical" compares the latest reading against that average.

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Frequently Asked Questions

What is the water quality in Weber County, Utah?
Weber County, Utah has a drinking-water quality grade of D with a score of 49.3/100, based on EPA SDWIS compliance data. The county has 47 health-based drinking water violations over the past 5 years. Watershed health, monitoring records, and live streamflow are reported separately on this page.
Are there any water violations in Weber County?
Weber County has 47 health-based drinking water violations recorded by the EPA over the past 5 years. Health-based violations indicate instances where contaminant levels exceeded EPA Maximum Contaminant Levels (MCLs). Violations may have been resolved — check with your local water utility for current status.
How much water-quality monitoring happens in Weber County?
EPA's Water Quality Portal records 18,396 measurements from 68 monitoring sites in Weber County over the past five years. The most frequently measured characteristic groups are Physical, Nutrient, Inorganics, Minor, Metals. Each measurement is a single sample analyzed for one characteristic (E. coli, pH, dissolved oxygen, etc.). High monitoring density means more scientific evidence behind any reported signal — it does not by itself indicate water quality.
What's happening with rivers in Weber County right now?
Weber County's primary USGS streamgage on the WEBER RIVER is currently reading 65.9 cubic feet per second — 15% of the long-term mean of 442.98 cfs. This is well below typical — often a signal of drought stress on source water. For genuine real-time data, visit waterdata.usgs.gov.
How does Weber County water compare to the Utah average?
Weber County's SDWIS water quality score of 49.3/100 is higher than the Utah state average of 47.7. The average water quality grade across Utah is D, based on data from 29 counties with available SDWIS data.
Is tap water safe to drink in Weber County?
Based on EPA SDWIS data, Weber County has a water quality grade of D (49.3/100). This indicates below-average compliance with significant violations. Residents may want to consider home water filtration or independent testing. The grade speaks to the public water system, not the watershed — for watershed-level concerns, see the Watershed Health zone. For the most up-to-date information, contact your local water utility or review your Consumer Confidence Report (CCR).
Why does Weber County have so many water violations?
Weber County has 47 health-based drinking water violations on record from the EPA SDWIS database. A higher violation count can result from aging infrastructure, underfunded water utilities, agricultural runoff contamination, or industrial pollution. Counties with more water systems may also see more violations simply due to scale. Residents concerned about water quality should consider independent water testing and home filtration systems.
How does Weber County rank for water quality in Utah?
Weber County ranks #14 out of 29 counties in Utah by SDWIS water quality score (1 = best). With a score of 49.3/100, it falls in the middle third of counties statewide. The ranking reflects EPA SDWIS compliance only — not watershed impairment, monitoring density, or streamflow, which are tracked separately on this page.

Counties with Similar Water Quality

Duchesne County

Utah

D

50.7

Water score

Cache County

Utah

C

55.2

Water score

Box Elder County

Utah

C

55.4

Water score

Data Sources

Drinking-water compliance data from the EPA Safe Drinking Water Information System (SDWIS) via the ECHO enforcement database. Scores reflect compliance history and health-based violation counts.

Water-quality monitoring counts from the EPA Water Quality Portal (WQP) — federated USGS, EPA, and state agency sampling records over a rolling 5-year window.

Live streamflow from the USGS National Water Information System (NWIS) — continuous discharge measurements from the largest-drainage gauge in each county, compared against the full-record long-term annual mean.

Disclaimer: This data is informational only. It is not health, legal, or professional advice. For concerns about your specific water supply, contact your local water utility.

By Logan Johnson, Founder & Data EditorUpdated Reviewed by Logan Johnson, Founder & Data Editor

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