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Tap water quality report

Jefferson Co Cons Pwsd C 1

EPA monitoring tested this supplier for 44 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

44
contaminants tested
12
detected
37,000
people served
2
health-based violations
Missouri rankingsLead in MissouriPFAS in Missouri
Water source
SWP
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.

2
health-based violations
2
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2010-02-01 → 2010-02-28
MCL Health-based Resolved 2010-02-01 → 2010-02-28

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
Bromodichloromethane
9.5795 µg/L
No EPA limit set
worst single sample: 13.2 µg/L
110/110 SYR4 2012–2019
Chloroform
75.325 µg/L
No EPA limit set
worst single sample: 103 µg/L
110/110 SYR4 2012–2019
TTHM
79.505 µg/L 99%
of the EPA limit 80 µg/L
worst single sample: 106 µg/L
110/110 SYR4 2012–2019
Dichloroacetic Acid
39.1 µg/L
No EPA limit set
worst single sample: 54.8 µg/L
109/110 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
43.82 µg/L 73%
of the EPA limit 60 µg/L
worst single sample: 61 µg/L
98/110 SYR4 2012–2019
Trichloroacetic Acid
5.1035 µg/L
No EPA limit set
worst single sample: 6.19 µg/L
98/110 SYR4 2012–2019
Copper
20.42 µg/L 1.6%
of the EPA limit 1300 µg/L
worst single sample: 29.5 µg/L
90/90 SYR4 2013–2019
Dibromochloromethane
3.076 µg/L
No EPA limit set
worst single sample: 4.2 µg/L
88/110 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 21/21 LCR 2025
Dibromoacetic Acid
2.1695 µg/L
No EPA limit set
worst single sample: 2.35 µg/L
20/110 SYR4 2012–2019
Lead
12.408 µg/L 83%
of the EPA limit 15 µg/L
worst single sample: 45 µg/L
17/90 SYR4 2013–2019
Monochloroacetic Acid
10.784 µg/L
No EPA limit set
worst single sample: 11.1 µg/L
2/110 SYR4 2012–2019
32 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaBromoformHfpo-DaMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaLithium

Utility contact

Contact
EDWARDS, LYNNE
Phone
636-948-2500
Email
[email protected]

Frequently asked questions about Jefferson Co Cons Pwsd C 1

Is Jefferson Co Cons Pwsd C 1 tap water safe to drink?

EPA monitoring detected 12 contaminants in Jefferson Co Cons Pwsd C 1'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 Jefferson Co Cons Pwsd C 1's water?

EPA monitoring detected Bromodichloromethane, Chloroform, TTHM, Dichloroacetic Acid, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Jefferson Co Cons Pwsd C 1 serve?

Jefferson Co Cons Pwsd C 1 reports serving 37,000 people in Missouri, per its EPA record.

Has Jefferson Co Cons Pwsd C 1 had any water quality violations?

The EPA has 2 violations on file for Jefferson Co Cons Pwsd C 1, of which 2 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.