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Federal water data

County water report

Monroe County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for Monroe County, New York.

Water grade

B

Water score

68.6

State rank

#6

of 57

Health violations

4

EPA SDWIS, 5-year lookback

Watershed impaired

Not reported

EPA ATTAINS coverage varies by state

Monitoring sites

42

17,081 recent measurements

Live streamflow

242%

GENESEE RIVER AT FORD STREET BRIDGE, ROCHESTER NY

Water at a glance

Key Water Indicators for Monroe County

EPA SDWIS

Safety Grade

B

Score: 68.6 / 100

EPA SDWIS

Active Violations

4

5-year health-based lookback

EPA ATTAINS

Watershed Health

Not reported

Coverage varies by state

USGS NWIS

Streamflow Snapshot

242% of mean

GENESEE RIVER AT FORD STREET BRIDGE, ROCHESTER NY

EPA WQP

Monitoring Sites

42

17,081 recent readings

Source: EPA SDWIS · Safe Drinking Water Information System

Drinking Water Compliance

Compliance grade

B

Based on EPA SDWIS compliance history.

Water score

Higher scores indicate cleaner recent compliance records.

68.6/100

Health violations

4

Health-based violations

Violations per 100K served

1.6

Population-normalized SDWIS rate

Editorial analysis

Understanding Monroe County’s Water

Drinking Water Quality Overview

EPA SDWIS

Monroe County earns a B grade for drinking water quality, scoring 68.6 out of 100. Over the past five years, EPA SDWIS records 4 health-based violations — a pattern that public water utilities are required to disclose and correct.

River & Streamflow Status

USGS NWIS

USGS NWIS gauge data (as of 2026-05-14T13:30:00.000-05:00) puts GENESEE RIVER at 7.0k cfs — running significantly above its long-term average at 242% of mean flow. 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. Monroe County has moderate coverage with 42 active monitoring sites with 17,081 recent measurements on record. Predominant monitoring categories include nutrient and physical. 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 Monroe County

Water Verdict

Monroe County receives a fair water quality assessment with a grade of B and a score of 68.6 out of 100. The water supply meets baseline federal standards, but there may be periods of elevated contaminant levels or infrastructure concerns worth monitoring.

Violation Context

Monroe County has recorded 4 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 1.6 violations per 100,000 people served, this rate is relatively low compared to many U.S. counties.

Consumer Guidance

Tap water in Monroe County meets baseline safety standards, though the compliance record shows some violations worth watching. Monroe County's drinking-water compliance score is 68.6 out of 100. The violation rate for Monroe County is 1.6 per 100,000 people served. Running tap water for 30 seconds before drinking can reduce any localized lead exposure from household plumbing. Requesting your utility's most recent Consumer Confidence Report is the fastest way to identify which specific contaminants were flagged. With 42 active water-quality monitoring sites in Monroe County, data coverage is strong. A pipeline streamflow snapshot from the GENESEE RIVER gauge is also available on this page.

Regional Context

Monroe County has better water quality than the average county in New York. Its water score is 28.5 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.

Contaminants & Resources

Key issues flagged in Monroe County's water environment

Official EPA Resources for Monroe County

EPA How's My Waterway

Interactive watershed health data for Monroe County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for Monroe County

Consumer Confidence Reports (NY)

Annual water quality reports from utilities in New York

Past 5 years

Water Quality Monitoring

Monitoring Sites

42

Active in the past 5 years

Measurements Recorded

17K

17,081 total readings

Most Measured

  • Nutrient
  • Physical
  • Organics, Other

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

6,980cfs

May 14, 6:30 PM UTC

vs Long-Term Average

242%

Well above typical

Primary Streamgage

GENESEE RIVER AT FORD STREET BRIDGE, ROCHESTER NY

USGS site
04231600
Drainage area
2,474 sq mi
Long-term mean
2,879 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

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Water Cost Estimate

3

3 people  ·  ~225 gal/day

Annual Total

$558

Monthly

$47

Water Bill

$558/yr

Filter Cost

$0/yr

Safety Grade for Monroe County:C — Moderate

Some violations or watershed impairment detected.

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.

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Frequently Asked Questions

What is the water quality in Monroe County, New York?
Monroe County, New York has a drinking-water quality grade of B with a score of 68.6/100, based on EPA SDWIS compliance data. The county has 4 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 Monroe County?
Monroe County has 4 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 Monroe County?
EPA's Water Quality Portal records 17,081 measurements from 42 monitoring sites in Monroe County over the past five years. The most frequently measured characteristic groups are Nutrient, Physical, Organics, Other. 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 Monroe County right now?
Monroe County's primary USGS streamgage on the GENESEE RIVER has a pipeline snapshot of 6,980 cubic feet per second — 242% of the long-term mean of 2,879.49 cfs. This is well above typical — often a signal of recent precipitation or storm runoff. For the latest gauge feed, visit waterdata.usgs.gov.
How does Monroe County water compare to the New York average?
Monroe County's SDWIS water quality score of 68.6/100 is higher than the New York state average of 40.1. The average water quality grade across New York is D, based on data from 57 counties with available SDWIS data.
Is tap water safe to drink in Monroe County?
Based on EPA SDWIS data, Monroe County has a water quality grade of B (68.6/100). 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 Monroe County have clean drinking water?
Monroe County has 4 health-based drinking water violations according to EPA records. With a water quality score of 68.6/100 and grade B, the county's drinking water has had some compliance issues but continues to be monitored. 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 Monroe County rank for water quality in New York?
Monroe County ranks #6 out of 57 counties in New York by SDWIS water quality score (1 = best). With a score of 68.6/100, 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

St. Lawrence County

New York

B

68.6

Water score

Nassau County

New York

B

68.8

Water score

Chemung County

New York

B

69.5

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 Reviewed by Evan Brooks, Data Editor

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