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Community Water System · PWS WA5393351

Spo Co Water Dist 3 Sys 1

Spokane, Washington 99212 - drinking water served from groundwater sources to 18,983 people, tracked in EPA SDWIS and UCMR5.

18,983
People served
124
EPA violations
0
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 124 drinking-water violations at Spo Co Water Dist 3 Sys 1 - above the Washington per-system average.

124
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
18,983
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Spo Co Water Dist 3 Sys 1

Spo Co Water Dist 3 Sys 1 is a local-owned community water system that delivers drinking water to 18,983 residents in Spokane, Washington (Spokane County) through 7,916 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 124 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 124 monitoring and reporting violations are on file. The most recent violation on record dates to 2017.

The most frequently cited contaminant at this system is Diquat, recorded in 24 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across Washington, EPA tracks 4,557 public water systems serving 9,736,844 people, with 314,648 cumulative violations and 20,590 health-based violations on record. About 92% of systems in the state carry at least one violation, and state-wide the average per system is 69 violations. Statewide, 98 of 247 UCMR5-tested systems have reported PFAS detections (39.7%).

Spo Co Water Dist 3 Sys 1's 124 violations sit above the Washington average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
18,983
Total Violations
124
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
7,916
County
Spokane
School/Daycare
No
MCL Violations
0
Monitoring Violations
124
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Diquat MR 24 2007
ETHYLENE DIBROMIDE MR 6 2007
1,2-DIBROMO-3-CHLOROPROPANE MR 6 2007
TTHM MR 4 2015
Total Haloacetic Acids (HAA5) MR 4 2015
Dalapon MR 3 2005
Dinoseb MR 3 2005
2,4,5-TP MR 3 2005
Pentachlorophenol MR 3 2005
OXAMYL MR 3 2005
Aldicarb MR 3 2005
Picloram MR 3 2005
Carbofuran MR 3 2005
Aldicarb sulfoxide MR 3 2005
Aldicarb sulfone MR 3 2005
HEXACHLOROBENZENE MR 2 2005
Benzo(a)pyrene MR 2 2005
Heptachlor MR 2 2005
Toxaphene MR 2 2005
BHC-GAMMA MR 2 2005
Chlordane MR 2 2005
LASSO MR 2 2005
Di(2-ethylhexyl) phthalate MR 2 2005
Atrazine MR 2 2005
Endrin MR 2 2005
Methoxychlor MR 2 2005
Hexachlorocyclopentadiene MR 2 2005
Di(2-ethylhexyl) adipate MR 2 2005
Simazine MR 2 2005
Nitrate MR 1 2017

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 290 samples detected PFAS.

Contaminant Date Result MRL Status
PFBA 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFTA 9/13/2023 <8.00 ppt 8.00 ppt Not Detected
PFEESA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
HFPO-DA 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFPeA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
NFDHA 9/13/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 9/13/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 9/13/2023 <6.00 ppt 6.00 ppt Not Detected
ADONA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 9/13/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 9/13/2023 <2.00 ppt 2.00 ppt Not Detected
PFOA 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
9Cl-PF3ONS 9/13/2023 <2.00 ppt 2.00 ppt Not Detected
PFUnA 9/13/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFBS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 9/13/2023 <20.00 ppt 20.00 ppt Not Detected
11Cl-PF3OUdS 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 9/13/2023 <6.00 ppt 6.00 ppt Not Detected
4:2 FTS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFTA 9/13/2023 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 9/13/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 9/13/2023 <5.00 ppt 5.00 ppt Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Spo Co Water Dist 3 Sys 1.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID WA5393351 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Washington Drinking Water Authority

Washington State Department of Health, Office of Drinking Water is the primacy agency that licenses and inspects Spo Co Water Dist 3 Sys 1 under EPA-delegated authority.

Open WA regulator portal

Source: Washington State Department of Health, Office of Drinking Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2017 Nitrate MR 1 SDWIS / WA5393351 / 1040
2015 TTHM MR 4 SDWIS / WA5393351 / 2950
2015 Total Haloacetic Acids (HAA5) MR 4 SDWIS / WA5393351 / 2456
2007 Diquat MR 24 SDWIS / WA5393351 / 2032
2007 ETHYLENE DIBROMIDE MR 6 SDWIS / WA5393351 / 2946
2007 1,2-DIBROMO-3-CHLOROPROPANE MR 6 SDWIS / WA5393351 / 2931
2007 DICHLOROMETHANE MR 1 SDWIS / WA5393351 / 2964
2007 CHLOROBENZENE MR 1 SDWIS / WA5393351 / 2989
2007 trans-1,2-Dichloroethylene MR 1 SDWIS / WA5393351 / 2979
2007 1,1-Dichloroethylene MR 1 SDWIS / WA5393351 / 2977
2007 Styrene MR 1 SDWIS / WA5393351 / 2996
2007 Vinyl chloride MR 1 SDWIS / WA5393351 / 2976
2007 Ethylbenzene MR 1 SDWIS / WA5393351 / 2992
2007 o-Dichlorobenzene MR 1 SDWIS / WA5393351 / 2968
2007 1,2,4-Trichlorobenzene MR 1 SDWIS / WA5393351 / 2378

How Spo Co Water Dist 3 Sys 1 Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Spo Co Water Dist 3 Sys 1 Washington avg Federal benchmark
Total violations 124 69 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 4.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 39.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 18,983 2,137 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 4,557 regulated public water systems in Washington.

Federal MCL reference, Safe Drinking Water Act thresholds
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Spo Co Water Dist 3 Sys 1 water safe to drink?
Spo Co Water Dist 3 Sys 1 (PWS ID: WA5393351) has 124 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 18,983 people using Groundwater sources.
How many people does Spo Co Water Dist 3 Sys 1 serve?
Spo Co Water Dist 3 Sys 1 serves 18,983 people in Spokane, Washington. It is a Local-owned system using Groundwater water sources with 7,916 service connections.
What type of violations does Spo Co Water Dist 3 Sys 1 have?
Spo Co Water Dist 3 Sys 1 has 124 total violations: 0 health-based violations (MCL exceedances or treatment failures), 124 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Spo Co Water Dist 3 Sys 1 water?
No. Spo Co Water Dist 3 Sys 1 was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Spo Co Water Dist 3 Sys 1 use?
Spo Co Water Dist 3 Sys 1 uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from?
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.