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Tap water quality report

Medical Lake City of

EPA monitoring tested this supplier for 103 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

103
contaminants tested
15
detected
4,982
people served
6
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.

6
health-based violations
11
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2000-03-01 → 2000-03-31
MCL Health-based Archived 2000-03-01 → 2000-03-31
MCL Health-based Archived 2000-03-01 → 2000-03-31
MCL Health-based Archived 1992-02-01 → 1992-02-29
MCL Health-based Archived 1992-02-01 → 1992-02-29
MCL Health-based Archived 1992-02-01 → 1992-02-29
MR Monitoring Resolved 2021-01-01 → 2021-12-31
MR Monitoring Resolved 2021-01-01 → 2021-12-31
Other Monitoring Resolved 2016-07-01
Other Monitoring Resolved 2015-07-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFHXS 0.0053 µg/L 2/4 2024
PFOS 0.0044 µg/L 1/4 2024

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
2870 µg/L 29%
of the EPA limit 10000 µg/L
 16/30 SYR4 2012–2019
Lead
0.0011 mg/L 7.3%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Bromodichloromethane
2.77 µg/L
No EPA limit set
worst single sample: 2.81 µg/L
11/12 SYR4 2012–2019
Bromoform
2.2 µg/L
No EPA limit set
worst single sample: 2.32 µg/L
11/12 SYR4 2012–2019
Chloroform
2.275 µg/L
No EPA limit set
worst single sample: 2.28 µg/L
11/12 SYR4 2012–2019
Dibromochloromethane
2.94 µg/L
No EPA limit set
worst single sample: 2.98 µg/L
11/12 SYR4 2012–2019
TTHM
9.565 µg/L 12%
of the EPA limit 80 µg/L
worst single sample: 10.3 µg/L
11/11 SYR4 2012–2019
Lithium
13.3 µg/L
No EPA limit set
 4/4 UCMR-5 2024
Dichloroacetic Acid
1.4525 µg/L
No EPA limit set
worst single sample: 1.47 µg/L
2/9 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
1.4525 µg/L 2.4%
of the EPA limit 60 µg/L
worst single sample: 1.47 µg/L
2/8 SYR4 2013–2018
Barium
13.7 µg/L 0.7%
of the EPA limit 2000 µg/L
 1/1 SYR4 2019
Fluoride
222 µg/L 5.6%
of the EPA limit 4000 µg/L
 1/1 SYR4 2019
Nitrate-Nitrite
1500 µg/L 15%
of the EPA limit 10000 µg/L
 1/1 SYR4 2019
88 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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOAPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JW Scott Duncan

Frequently asked questions about Medical Lake City of

Is Medical Lake City of tap water safe to drink?

EPA monitoring detected 15 contaminants in Medical Lake City of'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 Medical Lake City of's water?

EPA monitoring detected Nitrate, Lead, Bromodichloromethane, Bromoform, Chloroform, and others. The full list with the level and data source for each is above.

How many people does Medical Lake City of serve?

Medical Lake City of reports serving 4,982 people in Washington, per its EPA record.

Has Medical Lake City of had any water quality violations?

The EPA has 11 violations on file for Medical Lake City of, of which 6 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.