County water report

Pershing County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for Pershing County, Nevada.

Water grade

Water score

86.0

State rank

of 16

Health violations

EPA SDWIS, 5-year lookback

Watershed impaired

Not reported

EPA ATTAINS coverage varies by state

Monitoring sites

3,234 recent measurements

Live streamflow

84%

HUMBOLDT RV NR RYE PATCH, NV

Water at a glance

Key Water Indicators for Pershing County

EPA SDWIS

Safety Grade

Score: 86.0 / 100

EPA SDWIS

Active Violations

5-year health-based lookback

EPA ATTAINS

Watershed Health

Not reported

Coverage varies by state

USGS NWIS

Streamflow Snapshot

84% of mean

HUMBOLDT RV NR RYE PATCH, NV

EPA WQP

Monitoring Sites

3,234 recent readings

Source: EPA SDWIS · Safe Drinking Water Information System

Drinking Water Compliance

Compliance grade

Based on EPA SDWIS compliance history.

Water score

Higher scores indicate cleaner recent compliance records.

86.0/100

Health violations

Health-based violations

Violations per 100K served

0.0

Population-normalized SDWIS rate

Data center water stress

Pershing County has 1 facility in the DCWSI dataset.

ByCounty's DCWSI ranks this county #163 nationally by combining its water score with mapped data center density.

DCWSI

51.6

0-100 index

Facility count

0.0 density percentile

Discharge estimate

Not reported

EPA CWA fields where available

Water vs median

+36.0

Compared with US county median

Named operators

Google

Mapped facilities

GOOGLE LLC
MCCARRAN · Google
EPA ECHO

See the Pershing County data-center report Review methodology

Data Center Water Budget Calculator

Estimate daily water use for a hypothetical facility in Pershing County.

Facility size: 100 MW

1 MW1,000 MW

Cooling type

Utilization: 70%

40%100%

799K gallons/dayData Unavailable

County-level industrial water use data is unavailable for this county. Contact the county water authority directly for industrial withdrawal capacity.

Based on USGS 2020 water-use data and EPA-standard cooling intensity constants. Not a substitute for site-specific water rights analysis.

Editorial analysis

Understanding Pershing County’s Water

Drinking Water Quality Overview

EPA SDWIS

Pershing County earns an A grade for drinking water quality, scoring 86.0 out of 100. EPA's Safe Drinking Water Information System (SDWIS) records zero health-based violations over the past five years — a strong compliance signal for a small county.

River & Streamflow Status

USGS NWIS

USGS NWIS gauge data (as of 2026-05-14T12:10:00.000-07:00) puts HUMBOLDT RV at 199.0 cfs — running somewhat below its historical average at 84% of mean. Streamflow is a leading indicator of drought stress, sediment load, and dilution capacity: low flows concentrate pollutants and warm water temperatures, stressing aquatic life and, in surface-water-dependent systems, the source water quality for treatment plants.

Monitoring Network

EPA WQP

EPA's Water Quality Portal (WQP) aggregates monitoring data from federal, state, and tribal agencies. Pershing County has moderate coverage with 10 active monitoring sites with 3,234 recent measurements on record. Predominant monitoring categories include inorganics, minor, metals and inorganics, minor, non-metals. More monitoring sites generally indicate greater scientific attention to local water conditions — and provide the baseline data that regulators use to set future impairment listings.

Editorial advisory

What the data suggests for Pershing County

Water Verdict

Pershing County, Nevada receives an excellent water quality assessment with a grade of A and a score of 86.0 out of 100. The water supply meets or exceeds federal safety standards, and residents can generally drink tap water with confidence. The county's primary USGS gauge drains roughly 16,100 square miles of upstream watershed, giving local source waters a regional footprint. At the most recent USGS reading, local streamflow was below its historical mean at 83.9% — worth watching in drier seasons.

Violation Context

EPA SDWIS records for Pershing County, Nevada show zero health-based violations, indicating that the county's water systems met all federal safety standards during the reporting period. The violation rate is zero per 100,000 people served, which is the best possible outcome. For independent context, 3,234 water-quality monitoring results have been recorded across the county in the EPA Water Quality Portal over the past five years.

Consumer Guidance

The EPA compliance record for Pershing County shows no recent health-based violations. No health-based violations have been recorded, placing Pershing County in the top tier for drinking-water safety. Pershing County's drinking-water compliance score is 86.0 out of 100. As a routine precaution, requesting your utility's annual Consumer Confidence Report each July gives you a full list of detected contaminants and their treatment levels. There are 10 active water-quality monitoring sites in Pershing County. A pipeline streamflow snapshot from the HUMBOLDT RV gauge is also available on this page.

Regional Context

Pershing County has better water quality than the average county in Nevada. Its water score is 37.5 points higher than the state average, indicating stronger water system performance relative to neighboring counties.

Advisory text summarizes county-level public records and is not a replacement for your utility's current Consumer Confidence Report or direct local notices.

Past 5 years

Water Quality Monitoring

Monitoring Sites

Active in the past 5 years

Measurements Recorded

3.2K

3,234 total readings

Most Measured

Inorganics, Minor, Metals
Inorganics, Minor, Non-metals
Inorganics, Major, 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

199cfs

May 14, 7:10 PM UTC

vs Long-Term Average

84%

Below typical

Primary Streamgage

HUMBOLDT RV NR RYE PATCH, NV

USGS site: 10335000
Drainage area: 16,100 sq mi
Long-term mean: 237 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; the percent-of-typical value compares the latest reading against that average.

Free tool

Estimate Your Water Costs

Water Cost Estimate

Household size

3 people · ~225 gal/day

Filter type

Annual Total

$558

Monthly

$47

Water Bill

$558/yr

Filter Cost

$0/yr

Safety Grade for Pershing County:B — Good

Minor violations; waterways mostly healthy.

Estimates use the national average residential water rate ($0.0068/gal, EPA/AWWA 2023) and EPA WaterSense per-person consumption baseline (75 gal/person/day). Actual bills vary by utility, usage tier, and local infrastructure fees. For informational purposes only.

Try the full calculator →

Pershing County has good water quality

Learn about water restrictions and conservation in your area.

Water Restrictions →

Frequently Asked Questions

What is the water quality in Pershing County, Nevada?

Pershing County, Nevada has a drinking-water quality grade of A with a score of 86.0/100, based on EPA SDWIS compliance data. The county has 0 health-based drinking water violations over the past 5 years. Watershed health, monitoring records, and streamflow snapshots are reported separately on this page.

Are there any water violations in Pershing County?

Pershing County has 0 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). Zero violations is an excellent record indicating consistent compliance with federal drinking water standards.

How much water-quality monitoring happens in Pershing County?

EPA's Water Quality Portal records 3,234 measurements from 10 monitoring sites in Pershing County over the past five years. The most frequently measured characteristic groups are Inorganics, Minor, Metals, Inorganics, Minor, Non-metals, Inorganics, Major, 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 Pershing County right now?

Pershing County's primary USGS streamgage on the HUMBOLDT RV has a pipeline snapshot of 199 cubic feet per second — 84% of the long-term mean of 237.13 cfs. Flow is within typical range for this gauge. For the latest gauge feed, visit waterdata.usgs.gov.

How does Pershing County water compare to the Nevada average?

Pershing County's SDWIS water quality score of 86.0/100 is higher than the Nevada state average of 48.5. The average water quality grade across Nevada is D, based on data from 16 counties with available SDWIS data.

Is tap water safe to drink in Pershing County?

Based on EPA SDWIS data, Pershing County has a water quality grade of A (86.0/100). This indicates good to excellent water quality with strong SDWIS compliance. 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).

Does Pershing County have clean drinking water?

Pershing County has 0 health-based drinking water violations according to EPA records. With a water quality score of 86.0/100 and grade A, the county's drinking water meets EPA standards with no recorded health violations. Note: drinking-water compliance speaks to the public water system, not necessarily to the watershed itself — check the Watershed Health zone for ATTAINS §303(d) data.

How does Pershing County rank for water quality in Nevada?

Pershing County ranks #3 out of 16 counties in Nevada by SDWIS water quality score (1 = best). With a score of 86.0/100, it falls in the top 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

Elko County

Nevada

86.0

Water score

Lincoln County

Nevada

86.0

Water score

Storey County

Nevada

86.0

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 Evan Brooks, Data EditorUpdated May 14, 2026Reviewed by Evan Brooks, Data Editor

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