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Tap water quality report

Jefferson Water Department

EPA monitoring tested this supplier for 90 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

90
contaminants tested
19
detected
4,182
people served
5
health-based violations
Iowa rankingsLead in IowaPFAS in Iowa
Water source
Ground water
Ownership
Local government
Counties served
Greene

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.

5
health-based violations
24
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1995-10-01 → 1995-10-31
MCL Health-based Resolved 1995-10-01 → 1995-10-31
MCL Health-based Resolved 1995-10-01 → 1995-10-31
MCL Health-based Resolved 1995-10-01 → 1995-10-31
MCL Health-based Resolved 1995-10-01 → 1995-10-31
MR Monitoring Resolved 2020-04-01 → 2020-04-30
MR Monitoring Resolved 2020-04-01 → 2020-04-30
MR Monitoring Resolved 2020-04-01 → 2020-04-30
MR Monitoring Resolved 2020-04-01 → 2020-04-30
MR Monitoring Resolved 2020-04-01 → 2020-04-30

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
1910 µg/L 147%
of the EPA limit, in the worst sample — 1300 µg/L
 161/161 SYR4 2013–2019
Lead
21.7 µg/L 145%
of the EPA limit, in the worst sample — 15 µg/L
 44/161 SYR4 2013–2019
Bromodichloromethane
26.5 µg/L
No EPA limit set
 31/31 SYR4 2012–2019
Chloroform
77 µg/L
No EPA limit set
 31/31 SYR4 2012–2019
Dibromochloromethane
5.97 µg/L
No EPA limit set
 31/31 SYR4 2012–2019
TTHM
109 µg/L 136%
of the EPA limit, in the worst sample — 80 µg/L
 31/31 SYR4 2012–2019
Dichloroacetic Acid
20.9 µg/L
No EPA limit set
 30/31 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
61.6 µg/L 103%
of the EPA limit, in the worst sample — 60 µg/L
 30/31 SYR4 2012–2019
Trichloroacetic Acid
32 µg/L
No EPA limit set
 30/31 SYR4 2012–2019
Fluoride
930 µg/L 23%
of the EPA limit 4000 µg/L
 28/28 SYR4 2013–2019
Monochloroacetic Acid
15.9 µg/L
No EPA limit set
 24/31 SYR4 2012–2019
Dibromoacetic Acid
1.83 µg/L
No EPA limit set
 23/31 SYR4 2012–2019
Lead
0.00080 mg/L 5.3%
of the EPA limit 0.0150 mg/L
 19/19 LCR 2025
Nitrate
2200 µg/L 22%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
cis-1,2-Dichloroethylene
2.15 µg/L 3.1%
of the EPA limit 70 µg/L
 11/11 SYR4 2012–2019
Arsenic
3.5 µg/L 35%
of the EPA limit 10 µg/L
 4/4 SYR4 2013–2019
Monobromoacetic Acid
8.85 µg/L
No EPA limit set
 2/31 SYR4 2012–2019
Barium
191 µg/L 9.6%
of the EPA limit 2000 µg/L
 1/1 SYR4 2013
Bromoform
0.5000 µg/L
No EPA limit set
 1/31 SYR4 2012–2019
71 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBenzeneBenzo(A)PyreneChlorobenzeneCadmiumCarbon TetrachlorideChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylbenzeneGlyphosateHfpo-DaLassoMercuryNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, TotalLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JEFFERSON WATER DEPARTMENT
Phone
515-386-2611
Email
JEFFWATERPLANT@HOTMAIL.COM

Frequently asked questions about Jefferson Water Department

Is Jefferson Water Department tap water safe to drink?

EPA monitoring detected 19 contaminants in Jefferson Water Department'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 Water Department's water?

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

How many people does Jefferson Water Department serve?

Jefferson Water Department reports serving 4,182 people in Iowa, per its EPA record.

Has Jefferson Water Department had any water quality violations?

The EPA has 24 violations on file for Jefferson Water Department, of which 5 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.