waterbycounty
EPA SDWIS

Nemaha County Water Quality

Nemaha County, Kansas

Water Grade

D

Water Score

46.9

Violations

2

State Rank

#41

of 105 (1 = best)

EPA SDWIS Compliance

Drinking Water Quality

Water Quality Grade

D

Based on EPA compliance history and violation data

Water Score

46.9/100

Higher = better quality

Health Violations

2

Health-based violations

Violation Rate

20.8%

Systems with violations

Water Advisory: Nemaha County

Water Verdict

Nemaha County receives a below-average water quality assessment with a grade of D and a score of 46.9 out of 100. Residents should review their utility's Consumer Confidence Report and may want to consider additional water filtration for drinking.

Violation Context

Nemaha County has recorded 2 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 20.8 violations per 1,000 residents, this rate is high and signals significant water quality management issues.

Consumer Guidance

Residents of Nemaha 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 2 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

Nemaha County has water quality close to the average county in Kansas. Its water score is within 4.3 points of the state average, meaning its overall water system performance is broadly representative of Kansas as a whole.

Past 5 years

Water Quality Monitoring

Monitoring Sites

2

Active in the past 5 years

Measurements Recorded

1.7K

1,655 total readings

Most Measured

  • Organics, Pesticide
  • Nutrient
  • Physical

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

13.2cfs

May 14, 6:45 PM UTC

vs Long-Term Average

11%

Well below typical

Primary Streamgage

TURKEY C NR SENECA, KS

USGS site
06814000
Drainage area
276 sq mi
Long-term mean
118 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 Nemaha County, Kansas?
Nemaha County, Kansas has a drinking-water quality grade of D with a score of 46.9/100, based on EPA SDWIS compliance data. The county has 2 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 Nemaha County?
Nemaha County has 2 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 Nemaha County?
EPA's Water Quality Portal records 1,655 measurements from 2 monitoring sites in Nemaha County over the past five years. The most frequently measured characteristic groups are Organics, Pesticide, Nutrient, Physical. 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 Nemaha County right now?
Nemaha County's primary USGS streamgage on the TURKEY C is currently reading 13.2 cubic feet per second — 11% of the long-term mean of 118.47 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 Nemaha County water compare to the Kansas average?
Nemaha County's SDWIS water quality score of 46.9/100 is higher than the Kansas state average of 42.6. The average water quality grade across Kansas is D, based on data from 105 counties with available SDWIS data.
Is tap water safe to drink in Nemaha County?
Based on EPA SDWIS data, Nemaha County has a water quality grade of D (46.9/100). 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).
Does Nemaha County have clean drinking water?
Nemaha County has 2 health-based drinking water violations according to EPA records. With a water quality score of 46.9/100 and grade D, 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 Nemaha County rank for water quality in Kansas?
Nemaha County ranks #41 out of 105 counties in Kansas by SDWIS water quality score (1 = best). With a score of 46.9/100, 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

Shawnee County

Kansas

D

42.1

Water score

Geary County

Kansas

D

41.7

Water score

Finney County

Kansas

C

52.1

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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