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Tap water quality report

Washington Water Department

EPA monitoring tested this supplier for 80 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

80
contaminants tested
15
detected
7,362
people served
17
health-based violations
Iowa rankingsLead in IowaPFAS in Iowa
Water source
Ground water
Ownership
Local government
Counties served
Washington

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.

17
health-based violations
40
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1985-10-01 → 1986-09-30
MCL Health-based Archived 1985-10-01 → 1986-09-30
MCL Health-based Archived 1985-10-01 → 1986-09-30
MCL Health-based Archived 1985-10-01 → 1986-09-30
MCL Health-based Archived 1984-10-01 → 1985-09-30
MCL Health-based Archived 1983-10-01 → 1984-09-30
MCL Health-based Archived 1979-12-22 → 1980-12-21
MCL Health-based Archived 1979-12-22 → 1980-12-21
MCL Health-based Archived 1979-12-21 → 1980-10-20
MCL Health-based Resolved 1979-10-01 → 1983-09-30

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 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
Copper
419.5 µg/L 32%
of the EPA limit 1300 µg/L
worst single sample: 530 µg/L
62/80 SYR4 2014–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2023
Lead
19 µg/L 127%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 32 µg/L
11/80 SYR4 2014–2019
Bromodichloromethane
3.095 µg/L
No EPA limit set
worst single sample: 3.2 µg/L
4/7 SYR4 2013–2019
Bromoform
2.31 µg/L
No EPA limit set
worst single sample: 2.4 µg/L
4/7 SYR4 2013–2019
Combined Radium (-226 And -228)
4.965 pCi/L 99%
of the EPA limit 5 pCi/L
worst single sample: 5.4 pCi/L
4/5 SYR4 2012–2019
Dibromochloromethane
3.94 µg/L
No EPA limit set
worst single sample: 4 µg/L
4/7 SYR4 2013–2019
TTHM
10.82 µg/L 14%
of the EPA limit 80 µg/L
worst single sample: 11 µg/L
4/7 SYR4 2013–2019
Chloroform
2.08 µg/L
No EPA limit set
worst single sample: 2.2 µg/L
3/7 SYR4 2013–2019
Xylenes, Total
7.22 µg/L 0.1%
of the EPA limit 10000 µg/L
worst single sample: 7.8 µg/L
3/4 SYR4 2017–2019
Gross Alpha, Excl. Radon And U
17.365 pCi/L 116%
of the EPA limit, at the 95th percentile of samples — 15 pCi/L
worst single sample: 17.4 pCi/L
2/2 SYR4 2016
Nitrate
200 µg/L 2%
of the EPA limit 10000 µg/L
 2/16 SYR4 2012–2019
Lithium
38 µg/L
No EPA limit set
 2/2 UCMR-5 2024
Ethylbenzene
1.8 µg/L 0.3%
of the EPA limit 700 µg/L
 1/2 SYR4 2017
Monochloroacetic Acid
3 µg/L
No EPA limit set
 1/7 SYR4 2013–2019
65 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAsbestosAtrazineBenzeneChlorobenzeneCarbon TetrachlorideCombined UraniumDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDiquatGlyphosateHfpo-DaLassoMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Haloacetic Acids (HAA5)Trichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WASHINGTON WATER DEPARTMENT
Phone
319-653-1531
Email
[email protected]

Frequently asked questions about Washington Water Department

Is Washington Water Department tap water safe to drink?

EPA monitoring detected 15 contaminants in Washington 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 Washington Water Department's water?

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

How many people does Washington Water Department serve?

Washington Water Department reports serving 7,362 people in Iowa, per its EPA record.

Has Washington Water Department had any water quality violations?

The EPA has 40 violations on file for Washington Water Department, of which 17 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.