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Tap water quality report

Desoto

EPA monitoring tested this supplier for 99 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

99
contaminants tested
15
detected
6,400
people served
24
health-based violations
Missouri rankingsLead in MissouriPFAS in Missouri
Water source
Ground water
Ownership
Local government
Counties served
Jefferson

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.

24
health-based violations
30
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2005-12-01 → 2005-12-31
MCL Health-based Resolved 2005-12-01 → 2005-12-31
MCL Health-based Resolved 2005-12-01 → 2005-12-31
MCL Health-based Resolved 2005-12-01 → 2005-12-31
MCL Health-based Resolved 1997-10-01 → 1999-09-30
MCL Health-based Resolved 1997-09-01 → 1997-09-30
MCL Health-based Resolved 1997-09-01 → 1997-09-30
MCL Health-based Resolved 1997-09-01 → 1997-09-30
MCL Health-based Resolved 1997-09-01 → 1997-09-30
MCL Health-based Resolved 1997-06-01 → 1997-06-30

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 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
Copper
327 µg/L 25%
of the EPA limit 1300 µg/L
 88/94 SYR4 2012–2019
Barium
138 µg/L 6.9%
of the EPA limit 2000 µg/L
 34/34 SYR4 2012–2019
Cadmium
5.93 µg/L 119%
of the EPA limit, in the worst sample — 5 µg/L
 32/34 SYR4 2012–2019
Lead
33.9 µg/L 226%
of the EPA limit, in the worst sample — 15 µg/L
 32/94 SYR4 2012–2019
Lead
0.0015 mg/L 9.7%
of the EPA limit 0.0150 mg/L
 22/22 LCR 2025
Arsenic
2.55 µg/L 26%
of the EPA limit 10 µg/L
 21/34 SYR4 2012–2019
Chromium
9.17 µg/L 9.2%
of the EPA limit 100 µg/L
 20/34 SYR4 2012–2019
Fluoride
130 µg/L 3.3%
of the EPA limit 4000 µg/L
 9/34 SYR4 2012–2019
Dibromochloromethane
0.8400 µg/L
No EPA limit set
 7/11 SYR4 2013–2019
Bromodichloromethane
1 µg/L
No EPA limit set
 6/11 SYR4 2013–2019
Chloroform
0.9800 µg/L
No EPA limit set
 4/11 SYR4 2013–2019
TTHM
2.72 µg/L 3.4%
of the EPA limit 80 µg/L
 3/7 SYR4 2013–2019
Dichloroacetic Acid
1.25 µg/L
No EPA limit set
 2/7 SYR4 2013–2019
Combined Radium (-226 And -228)
1.1 pCi/L 22%
of the EPA limit 5 pCi/L
 1/2 SYR4 2016
Mercury
0.2100 µg/L 11%
of the EPA limit 2 µg/L
 1/34 SYR4 2012–2019
84 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, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalBromoformChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitrate-NitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MELKUS, TODD
Phone
636-586-3326
Email
t.melkus@desotomo.com

Frequently asked questions about Desoto

Is Desoto tap water safe to drink?

EPA monitoring detected 15 contaminants in Desoto'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 Desoto's water?

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

How many people does Desoto serve?

Desoto reports serving 6,400 people in Missouri, per its EPA record.

Has Desoto had any water quality violations?

The EPA has 30 violations on file for Desoto, of which 24 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.