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Public water system record

Pioneer Water Company

Serves an area of Spokane County, WA · 443 people served

Federal records show no health-based violations and 26 monitoring/reporting issues for Pioneer Water Company in the last ten years.

  • WA5324885
  • MARSHALL
  • WA
  • 443 served

System profile

Source water Groundwater
ZIP 99020
EPA system ID WA5324885

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
26

Key facts

  • Pioneer Water Company draws water from 2 wells (1 of them for emergency, seasonal or other part-time use).
  • Most recent formal enforcement: compliance order (no penalty) by Washington, September 2025.
  • Record on file since 2004, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 183 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.

None since October 2016.

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Consumer Confidence Rule
OTHER
 Jul 1, 2024 Resolved
Nitrate
Monitoring and reporting
 Jan 1, 2024 Resolved
Consumer Confidence Rule
OTHER
 Jul 1, 2021 Resolved
Styrene
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Ethylbenzene
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Toluene
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Benzene
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
CHLOROBENZENE
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Tetrachloroethylene
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,1,2-Trichloroethane
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Trichloroethylene
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,2-Dichloropropane
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Carbon tetrachloride
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,1,1-Trichloroethane
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,2-Dichloroethane
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
trans-1,2-Dichloroethylene
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,1-Dichloroethylene
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Vinyl chloride
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
p-Dichlorobenzene
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
o-Dichlorobenzene
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
DICHLOROMETHANE
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
cis-1,2-Dichloroethylene
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,2,4-Trichlorobenzene
Monitoring and reporting
 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Revised Total Coliform Rule
Monitoring violation
 Sep 1, 2019 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jan 1, 2016 Resolved
Nitrate
Monitoring and reporting
 Jan 1, 2016 Resolved

Full record since 2004

EPA's records for Pioneer Water Company go back to 2004. Before October 19, 2016 they list no health-based violations and 20 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2000s 0 15
2010 to October 18, 2016 0 5
October 19, 2016 to 2019 0 1
2020s 0 23

Enforcement actions

Washington regulators took 1 formal enforcement action against Pioneer Water Company in 2025. The most recent was a compliance order (no penalty) in September 2025.

Date By Action Violations covered
Sep 4, 2025 Washington Compliance order (no penalty) 1 violation: Nitrate

Where the water comes from

Pioneer Water Company draws water from 2 wells (1 of them for emergency, seasonal or other part-time use). It also buys water from Consolidated Irrig Dist 19 System 1. 1 other community water system buys water from Pioneer Water Company.

Buys water from

Community systems that buy water from it

Annual water quality report

Pioneer Water Company 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.

Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Pioneer Water Company for a copy.

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 Washington.

Certified drinking water labs by state EPA guidance for private wells