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Tap water quality report

Washington

EPA monitoring tested this supplier for 99 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

99
contaminants tested
9
detected
14,068
people served
75
health-based violations
Missouri rankingsLead in MissouriPFAS in Missouri
Water source
Ground water
Ownership
Local government
Counties served
Franklin

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.

75
health-based violations
87
violations on file
1
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-07-09
TT Health-based Resolved 2024-07-09
TT Health-based Resolved 2024-07-09
TT Health-based Resolved 2024-07-09
MCL Health-based Resolved 2015-07-01 → 2015-07-31
MCL Health-based Resolved 2015-07-01 → 2015-07-31
MCL Health-based Resolved 2015-07-01 → 2015-07-31
MCL Health-based Resolved 2015-07-01 → 2015-07-31
MCL Health-based Resolved 2015-07-01 → 2015-07-31
MCL Health-based Resolved 2015-07-01 → 2015-07-31

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate-Nitrite
210 µg/L 2.1%
of the EPA limit 10000 µg/L
 126/140 SYR4 2012–2019
Copper
170 µg/L 13%
of the EPA limit 1300 µg/L
 105/108 SYR4 2012–2018
Lead
12.6 µg/L 84%
of the EPA limit 15 µg/L
 56/108 SYR4 2012–2018
Lead
0.0026 mg/L 17%
of the EPA limit 0.0150 mg/L
 26/26 LCR 2024
Barium
447 µg/L 22%
of the EPA limit 2000 µg/L
 18/18 SYR4 2014–2017
Chromium
2.19 µg/L 2.2%
of the EPA limit 100 µg/L
 12/38 SYR4 2013–2017
Fluoride
150 µg/L 3.8%
of the EPA limit 4000 µg/L
 5/18 SYR4 2014–2017
Chloroform
1.56 µg/L
No EPA limit set
 1/19 SYR4 2016–2019
Toluene
17.2 µg/L 1.7%
of the EPA limit 1000 µg/L
 1/21 SYR4 2014–2019
90 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-GammaBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDibromoacetic AcidDibromochloromethaneDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTotal Haloacetic Acids (HAA5)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
QUAETHEM, KEVIN
Phone
636-390-1076
Email
kquaethem@washmo.gov

Frequently asked questions about Washington

Is Washington tap water safe to drink?

EPA monitoring detected 9 contaminants in Washington'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 Washington's water?

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

How many people does Washington serve?

Washington reports serving 14,068 people in Missouri, per its EPA record.

Has Washington had any water quality violations?

The EPA has 87 violations on file for Washington, of which 75 are health-based (a contaminant limit or required treatment was breached) and 1 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.