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Public water system record

City of Nyssa

Serves Nyssa, Malheur County, OR · 3,285 people served

Federal records show 8 health-based violations and 13 monitoring/reporting issues for City of Nyssa in the last ten years. The most serious issue in this window was a resolved Arsenic violation.

  • OR4100579
  • NYSSA
  • OR
  • 3,285 served

System profile

Source water Groundwater
ZIP 97913
EPA system ID OR4100579

Verify this system on EPA ECHO →

Health-based violations, last 10 years
8
Resolved
8
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
13

Key facts

  • City of Nyssa draws water from 5 wells.
  • Highest measured level in the last 10 years: Arsenic, 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit), 2018.
  • Most recent formal enforcement: compliance order with a penalty by Oregon, May 2018.
  • Record on file since 1976, with 27 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 864 unknown out of 1,192 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
 330 Jul 1, 2018 Resolved No
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
 330 Apr 1, 2018 Resolved No
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
 330 Jan 1, 2018 Resolved No
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
 330 Oct 1, 2017 Resolved No
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
 330 Jul 1, 2017 Resolved No
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
 330 Apr 1, 2017 Resolved No
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
 330 Jan 1, 2017 Resolved No
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
 330 Oct 1, 2016 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Revised Total Coliform Rule
Monitoring violation
 Jun 1, 2025 Resolved
Consumer Confidence Rule
OTHER
 Jul 1, 2024 Resolved
Revised Total Coliform Rule
Monitoring violation
 May 1, 2024 Resolved
Consumer Confidence Rule
OTHER
 Oct 1, 2023 Resolved
Consumer Confidence Rule
OTHER
 Jul 1, 2023 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Oct 1, 2022 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Oct 1, 2022 Resolved
Arsenic
Monitoring and reporting
 Apr 1, 2019 Resolved
Nitrate
Monitoring and reporting
 Jan 1, 2019 Resolved
Public Notice
OTHER
 Nov 25, 2018 Resolved
Public Notice
OTHER
 Aug 31, 2017 Resolved
Public Notice
OTHER
 Jun 3, 2017 Resolved
COLIPHAGE
Monitoring and reporting
 Jan 1, 2017 Resolved

Full record since 1976

EPA's records for City of Nyssa go back to 1976. Before October 19, 2016 they list 27 health-based violations (27 resolved) and 27 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1970s 0 2
1990s 4 11
2000s 3 11
2010 to October 18, 2016 20 3
October 19, 2016 to 2019 7 6
2020s 0 7

Most recent health-based violation before October 19, 2016: Arsenic, began October 2016, Resolved.

Show all 27 health-based violations before October 19, 2016
Contaminant Start date Status
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
 Oct 1, 2016 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Jul 1, 2016 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Apr 1, 2016 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Jan 1, 2016 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Oct 1, 2015 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.016 mg/L, federal limit 0.01 mg/L (1.6 times the limit)
 Jul 1, 2015 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.016 mg/L, federal limit 0.01 mg/L (1.6 times the limit)
 Apr 1, 2015 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Jan 1, 2015 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
 Oct 1, 2014 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Jul 1, 2014 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Apr 1, 2014 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
 Jan 1, 2014 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
 Oct 1, 2013 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
 Jul 1, 2013 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
 Apr 1, 2013 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
 Jan 1, 2013 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
 Oct 1, 2012 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
 Jul 1, 2012 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Apr 1, 2012 Resolved
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
 Jan 1, 2012 Resolved
Total Coliform
Contaminant limit exceeded
 Jun 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
 Apr 1, 2000 Resolved
Total Coliform (acute)
Contaminant limit exceeded
 Apr 1, 2000 Resolved
Total Coliform
Contaminant limit exceeded
 Oct 1, 1999 Resolved
Total Coliform
Contaminant limit exceeded
 Jun 1, 1995 Resolved
Total Coliform (acute)
Contaminant limit exceeded
 Jun 1, 1995 Resolved
Total Coliform
Contaminant limit exceeded
 May 1, 1995 Resolved

Enforcement actions

Oregon regulators took 1 formal enforcement action against City of Nyssa in 2018. The most recent was a compliance order with a penalty in May 2018.

Date By Action Violations covered
May 9, 2018 Oregon Compliance order with a penalty 32 violations (27 health-based): Public Notice, Arsenic

What the violations mean

Arsenic

8 incidents

Arsenic exceeded the federal limit

Long-term arsenic exposure is linked to cancer and cardiovascular effects

Where the water comes from

City of Nyssa draws water from 5 wells.

Annual water quality report

City of Nyssa must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Oregon.

Certified drinking water labs by state EPA guidance for private wells