States ›Oregon ›Malheur County ›Nyssa

Nyssa, OR Tap Water Quality 2026

Water quality report for Nyssa, OR — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Nyssa's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Nyssa, City Of PWSID: OR4100579 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 1.63 ppb, 11% of the action level and no violations are open. PFAS has never been sampled at this system.

C

Nyssa earns a C for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 1.63 ppb — 11% of the federal action level
PFAS never sampled at this system
29 violations since 2015, 15 health-based
No violations currently open
Nyssa's lead level vs. all Oregon community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.63 ppb — 11% of the federal action level
✓ Lower lead than 72% of Oregon utilities
Population Served
3189
~1126 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
29 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
11% of EPA action level
1.63 ppb
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
162.3% of EPA action level
2,110 ppb
Action level: 1,300 ppb
The 90th-percentile lead result is 1.63 ppb, 11% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Resolved
Consumer Confidence Rule OTHER — — 2024 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Resolved
Consumer Confidence Rule OTHER — — 2023 Resolved
Consumer Confidence Rule OTHER — — 2023 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2022–2023 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2022–2023 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2019 Resolved
Nitrate MONITORING AND REPORTING — 10 mg/L 2019 Resolved
Public Notice OTHER — — 2018 Resolved
Arsenic MCL EXCEEDANCE 0.012 MG/L 0.010 mg/L 2018 Resolved
Arsenic MCL EXCEEDANCE 0.013 MG/L 0.010 mg/L 2018 Resolved
Arsenic MCL EXCEEDANCE 0.013 MG/L 0.010 mg/L 2018 Resolved
Arsenic MCL EXCEEDANCE 0.013 MG/L 0.010 mg/L 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Arsenic MCL EXCEEDANCE 0.012 MG/L 0.010 mg/L 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Arsenic MCL EXCEEDANCE 0.012 MG/L 0.010 mg/L 2017 Resolved
Arsenic MCL EXCEEDANCE 0.013 MG/L 0.010 mg/L 2017 Resolved
COLIPHAGE MONITORING AND REPORTING — — 2017 Resolved
Arsenic MCL EXCEEDANCE 0.013 MG/L 0.010 mg/L 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Arsenic MCL EXCEEDANCE 0.014 MG/L 0.010 mg/L 2016 Resolved
Arsenic MCL EXCEEDANCE 0.014 MG/L 0.010 mg/L 2016 Resolved
Arsenic MCL EXCEEDANCE 0.015 MG/L 0.010 mg/L 2016 Resolved
Arsenic MCL EXCEEDANCE 0.015 MG/L 0.010 mg/L 2015 Resolved
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2015 Resolved
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2015 Resolved
Arsenic MCL EXCEEDANCE 0.015 MG/L 0.010 mg/L 2015 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

29 violations are on record since 2015, of which 15 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Nyssa, City Of
PWSID OR4100579
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 3,189
Service connections 1,126
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Nyssa tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 1.63 ppb, 11% of the action level.
Does Nyssa water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Nyssa? ▼
Nyssa, City Of (PWSID OR4100579). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2024-08-07. No significant deficiencies were recorded.

What Should Nyssa Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

Nearby Cities in Oregon

Ontario, Or Tap Water Quality 2026 Malheur Vale, Or Tap Water Quality 2026 Malheur Adrian, Or Tap Water Quality 2026 Malheur Jordan Valley, Or Tap Water Quality 2026 Malheur