SPO CO WATER DIST 3 SYS 4

Q: Is SPO CO WATER DIST 3 SYS 4 water safe to drink?

SPO CO WATER DIST 3 SYS 4 (PWS ID: WA5393354) has 332 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 6,155 people using Groundwater sources.

Q: What type of violations does SPO CO WATER DIST 3 SYS 4 have?

SPO CO WATER DIST 3 SYS 4 has 332 total violations: 3 health-based violations (MCL exceedances or treatment failures), 329 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Q: Has PFAS been detected in SPO CO WATER DIST 3 SYS 4 water?

No. SPO CO WATER DIST 3 SYS 4 was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.

Q: What water source does SPO CO WATER DIST 3 SYS 4 use?

SPO CO WATER DIST 3 SYS 4 uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Q: 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.

Reviewed byPlainWater Editorial, Drinking Water Quality Editorial Team · June 4, 2026

PWS ID: WA5393354 · Spokane, Washington 99212

SPO CO WATER DIST 3 SYS 4 serves 6,155 people in Spokane, Washington using Groundwater water sources. It has 332 recorded EPA violations, including 3 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: SPO CO WATER DIST 3 SYS 4

SPO CO WATER DIST 3 SYS 4 is a local-owned community water system that delivers drinking water to 6,155 residents in Spokane, Washington (Spokane County) through 2,552 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 332 total violations for this system , of which 3 (1%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 329 monitoring and reporting violations are on file. The most recent violation on record dates to 2016.

The most frequently cited contaminant at this system is Diquat, recorded in 33 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. SPO CO WATER DIST 3 SYS 4's 332 violations sit above the Washington average. Statewide, 98 of 247 UCMR5-tested systems have reported PFAS detections (39.7%). 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

6,155

Total Violations

332

Health-Based Violations

Water Source

Groundwater

System Details

System Type: Community
Owner Type: Local
Connections: 2,552
County: Spokane
School/Daycare: No
MCL Violations: 3
Monitoring Violations: 329
Treatment Tech Violations: 0

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Diquat	MR	33	2007
ETHYLENE DIBROMIDE	MR	13	2007
1,2-DIBROMO-3-CHLOROPROPANE	MR	13	2007
DICHLOROMETHANE	MR	11	2016
o-Dichlorobenzene	MR	11	2016
Vinyl chloride	MR	11	2016
1,1-Dichloroethylene	MR	11	2016
1,2-Dichloropropane	MR	11	2016
Trichloroethylene	MR	11	2016
1,1,2-Trichloroethane	MR	11	2016
Tetrachloroethylene	MR	11	2016
Toluene	MR	11	2016
Styrene	MR	11	2016
1,2,4-Trichlorobenzene	MR	11	2016
p-Dichlorobenzene	MR	11	2016
trans-1,2-Dichloroethylene	MR	11	2016
1,2-Dichloroethane	MR	11	2016
Carbon tetrachloride	MR	11	2016
Benzene	MR	11	2016
Ethylbenzene	MR	11	2016
1,1,1-Trichloroethane	MR	11	2016
CHLOROBENZENE	MR	11	2016
cis-1,2-Dichloroethylene	MR	11	2016
Coliform (TCR)	MCL	3	1992
Aldicarb	MR	2	2005
Toxaphene	MR	2	2005
Di(2-ethylhexyl) phthalate	MR	2	2005
Dalapon	MR	2	2005
Aldicarb sulfoxide	MR	2	2005
Carbofuran	MR	2	2005

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 240 samples detected PFAS.

Contaminant	Date	Result	MRL	Status
PFTrDA	9/27/2023	<0.007 µg/L	0.007 µg/L	Not Detected
NEtFOSAA	9/27/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFPeA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFTA	9/27/2023	<0.008 µg/L	0.008 µg/L	Not Detected
PFHpS	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeS	9/27/2023	<0.004 µg/L	0.004 µg/L	Not Detected
NFDHA	9/27/2023	<0.02 µg/L	0.02 µg/L	Not Detected
NMeFOSAA	9/27/2023	<0.006 µg/L	0.006 µg/L	Not Detected
PFMBA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFMPA	9/27/2023	<0.004 µg/L	0.004 µg/L	Not Detected
8:2 FTS	9/27/2023	<0.005 µg/L	0.005 µg/L	Not Detected
lithium	9/27/2023	<9 µg/L	9 µg/L	Not Detected
4:2 FTS	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
6:2 FTS	9/27/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFBA	9/27/2023	<0.005 µg/L	0.005 µg/L	Not Detected
HFPO-DA	9/27/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFHxS	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFEESA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
ADONA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFUnA	9/27/2023	<0.002 µg/L	0.002 µg/L	Not Detected
9Cl-PF3ONS	9/27/2023	<0.002 µg/L	0.002 µg/L	Not Detected
PFHpA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFNA	9/27/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFOS	9/27/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFOA	9/27/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFDA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFDoA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
11Cl-PF3OUdS	9/27/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFBS	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFBS	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFOS	9/27/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFNA	9/27/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFHxS	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHpA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFHpS	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeS	9/27/2023	<0.004 µg/L	0.004 µg/L	Not Detected
PFMBA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeA	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFOA	9/27/2023	<0.004 µg/L	0.004 µg/L	Not Detected
lithium	9/27/2023	<9 µg/L	9 µg/L	Not Detected
PFBA	9/27/2023	<0.005 µg/L	0.005 µg/L	Not Detected
4:2 FTS	9/27/2023	<0.003 µg/L	0.003 µg/L	Not Detected
PFUnA	9/27/2023	<0.002 µg/L	0.002 µg/L	Not Detected
8:2 FTS	9/27/2023	<0.005 µg/L	0.005 µg/L	Not Detected
NMeFOSAA	9/27/2023	<0.006 µg/L	0.006 µg/L	Not Detected
NEtFOSAA	9/27/2023	<0.005 µg/L	0.005 µg/L	Not Detected
PFTrDA	9/27/2023	<0.007 µg/L	0.007 µg/L	Not Detected
PFTA	9/27/2023	<0.008 µg/L	0.008 µg/L	Not Detected
NFDHA	9/27/2023	<0.02 µg/L	0.02 µg/L	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 4.

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 WA5393354 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 4 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
2016	DICHLOROMETHANE	MR	11	SDWIS / WA5393354 / 2964
2016	o-Dichlorobenzene	MR	11	SDWIS / WA5393354 / 2968
2016	Vinyl chloride	MR	11	SDWIS / WA5393354 / 2976
2016	1,1-Dichloroethylene	MR	11	SDWIS / WA5393354 / 2977
2016	1,2-Dichloropropane	MR	11	SDWIS / WA5393354 / 2983
2016	Trichloroethylene	MR	11	SDWIS / WA5393354 / 2984
2016	1,1,2-Trichloroethane	MR	11	SDWIS / WA5393354 / 2985
2016	Tetrachloroethylene	MR	11	SDWIS / WA5393354 / 2987
2016	Toluene	MR	11	SDWIS / WA5393354 / 2991
2016	Styrene	MR	11	SDWIS / WA5393354 / 2996
2016	1,2,4-Trichlorobenzene	MR	11	SDWIS / WA5393354 / 2378
2016	p-Dichlorobenzene	MR	11	SDWIS / WA5393354 / 2969
2016	trans-1,2-Dichloroethylene	MR	11	SDWIS / WA5393354 / 2979
2016	1,2-Dichloroethane	MR	11	SDWIS / WA5393354 / 2980
2016	Carbon tetrachloride	MR	11	SDWIS / WA5393354 / 2982

How SPO CO WATER DIST 3 SYS 4 Compares

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

Metric	SPO CO WATER DIST 3 SYS 4	Washington avg	Federal benchmark
Total violations	332	69	SDWA compliance — any non-zero count is a recorded breach
Health-based violations	3	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	6,155	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
Nitrate (as N)	10 mg/L	Acute health risk for infants

Frequently Asked Questions

Is SPO CO WATER DIST 3 SYS 4 water safe to drink? ▼

SPO CO WATER DIST 3 SYS 4 (PWS ID: WA5393354) has 332 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 6,155 people using Groundwater sources.

How many people does SPO CO WATER DIST 3 SYS 4 serve? ▼

SPO CO WATER DIST 3 SYS 4 serves 6,155 people in Spokane, Washington. It is a Local-owned system using Groundwater water sources with 2,552 service connections.

What type of violations does SPO CO WATER DIST 3 SYS 4 have? ▼

SPO CO WATER DIST 3 SYS 4 has 332 total violations: 3 health-based violations (MCL exceedances or treatment failures), 329 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 4 water? ▼

No. SPO CO WATER DIST 3 SYS 4 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 4 use? ▼

SPO CO WATER DIST 3 SYS 4 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.

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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.

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