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Tap water quality report

Spo Co Water Dist 3 Sys 4

EPA monitoring tested this supplier for 110 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

110
contaminants tested
14
detected
6,233
people served
3
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Local government
Counties served
Spokane

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

3
health-based violations
332
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1992-06-01 → 1992-06-30
MCL Health-based Archived 1992-06-01 → 1992-06-30
MCL Health-based Archived 1992-06-01 → 1992-06-30
MR Monitoring Resolved 2016-07-01 → 2016-09-30
MR Monitoring Resolved 2016-07-01 → 2016-09-30
MR Monitoring Resolved 2016-07-01 → 2016-09-30
MR Monitoring Resolved 2016-07-01 → 2016-09-30
MR Monitoring Resolved 2016-07-01 → 2016-09-30
MR Monitoring Resolved 2016-07-01 → 2016-09-30
MR Monitoring Resolved 2016-07-01 → 2016-09-30

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
6800 µg/L 68%
of the EPA limit 10000 µg/L
worst single sample: 7440 µg/L
50/54 SYR4 2012–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 6/6 LCR 2023
Nitrate-Nitrite
3784 µg/L 38%
of the EPA limit 10000 µg/L
worst single sample: 4310 µg/L
5/5 SYR4 2013–2019
Arsenic
2.795 µg/L 28%
of the EPA limit 10 µg/L
worst single sample: 2.9 µg/L
4/5 SYR4 2013–2019
TTHM
6.4315 µg/L 8%
of the EPA limit 80 µg/L
worst single sample: 6.97 µg/L
4/4 SYR4 2012–2016
Dibromochloromethane
1.372 µg/L
No EPA limit set
worst single sample: 1.42 µg/L
3/14 SYR4 2012–2019
Bromodichloromethane
1.8925 µg/L
No EPA limit set
worst single sample: 1.93 µg/L
2/14 SYR4 2012–2019
Chloroform
3.502 µg/L
No EPA limit set
worst single sample: 3.62 µg/L
2/14 SYR4 2012–2019
Combined Uranium
3.1995 µg/L 11%
of the EPA limit 30 µg/L
worst single sample: 3.21 µg/L
2/2 SYR4 2013–2016
Barium
37 µg/L 1.9%
of the EPA limit 2000 µg/L
 1/5 SYR4 2013–2019
Bromoform
0.5300 µg/L
No EPA limit set
 1/14 SYR4 2012–2019
Fluoride
240 µg/L 6%
of the EPA limit 4000 µg/L
 1/5 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
1.44 µg/L 2.4%
of the EPA limit 60 µg/L
 1/6 SYR4 2012–2018
Trichloroacetic Acid
1.44 µg/L
No EPA limit set
 1/7 SYR4 2012–2019
96 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Kelly Williquette

Frequently asked questions about Spo Co Water Dist 3 Sys 4

Is Spo Co Water Dist 3 Sys 4 tap water safe to drink?

EPA monitoring detected 14 contaminants in Spo Co Water Dist 3 Sys 4's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Spo Co Water Dist 3 Sys 4's water?

EPA monitoring detected Nitrate, Lead, Nitrate-Nitrite, Arsenic, TTHM, and others. The full list with the level and data source for each is above.

How many people does Spo Co Water Dist 3 Sys 4 serve?

Spo Co Water Dist 3 Sys 4 reports serving 6,233 people in Washington, per its EPA record.

Has Spo Co Water Dist 3 Sys 4 had any water quality violations?

The EPA has 332 violations on file for Spo Co Water Dist 3 Sys 4, of which 3 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.