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Tap water quality report

Delhi Water Supply

EPA monitoring tested this supplier for 60 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

60
contaminants tested
19
detected
420
people served
0
health-based violations
Iowa rankingsLead in IowaPFAS in Iowa
Water source
Ground water
Ownership
Local government
Counties served
Delaware

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.

0
health-based violations
325
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2022-10-01 → 2022-12-31
MR Monitoring Resolved 2022-10-01 → 2022-12-31
MR Monitoring Resolved 2022-10-01 → 2022-12-31
MR Monitoring Resolved 2022-10-01 → 2022-12-31
MON Monitoring Resolved 2021-05-01 → 2021-05-31
MON Monitoring Resolved 2021-05-01 → 2021-05-31
MON Monitoring Resolved 2021-05-01 → 2021-05-31
MON Monitoring Resolved 2021-05-01 → 2021-05-31
MR Monitoring Resolved 2016-03-01 → 2016-03-31
MR Monitoring Resolved 2016-03-01 → 2016-03-31

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 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
Nitrate
6790 µg/L 68%
of the EPA limit 10000 µg/L
worst single sample: 7200 µg/L
72/82 SYR4 2012–2019
Copper
153.3 µg/L 12%
of the EPA limit 1300 µg/L
worst single sample: 161 µg/L
15/15 SYR4 2012–2018
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2024
Lead
13.49 µg/L 90%
of the EPA limit 15 µg/L
worst single sample: 15.5 µg/L
4/15 SYR4 2012–2018
Bromodichloromethane
4.761 µg/L
No EPA limit set
worst single sample: 5.03 µg/L
3/3 SYR4 2013–2019
Chloroform
28.035 µg/L
No EPA limit set
worst single sample: 30.9 µg/L
3/3 SYR4 2013–2019
Dibromoacetic Acid
1.126 µg/L
No EPA limit set
worst single sample: 1.15 µg/L
3/3 SYR4 2013–2019
Dibromochloromethane
2.772 µg/L
No EPA limit set
worst single sample: 2.84 µg/L
3/3 SYR4 2013–2019
TTHM
36.675 µg/L 46%
of the EPA limit 80 µg/L
worst single sample: 40 µg/L
3/3 SYR4 2013–2019
Barium
58.845 µg/L 2.9%
of the EPA limit 2000 µg/L
worst single sample: 59.7 µg/L
2/2 SYR4 2012
Dichloroacetic Acid
4.6125 µg/L
No EPA limit set
worst single sample: 4.75 µg/L
2/3 SYR4 2013–2019
Fluoride
100 µg/L 2.5%
of the EPA limit 4000 µg/L
 2/2 SYR4 2012
Monochloroacetic Acid
4.588 µg/L
No EPA limit set
worst single sample: 4.7 µg/L
2/3 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
12.4555 µg/L 21%
of the EPA limit 60 µg/L
worst single sample: 12.8 µg/L
2/3 SYR4 2013–2019
Trichloroacetic Acid
2.1645 µg/L
No EPA limit set
worst single sample: 2.25 µg/L
2/3 SYR4 2013–2019
Antimony, Total
0.4000 µg/L 6.7%
of the EPA limit 6 µg/L
 1/2 SYR4 2012
Bromoform
1.2 µg/L
No EPA limit set
 1/3 SYR4 2013–2019
Combined Radium (-226 And -228)
1.02 pCi/L 20%
of the EPA limit 5 pCi/L
 1/3 SYR4 2012–2018
Selenium
2.9 µg/L 5.8%
of the EPA limit 50 µg/L
 1/2 SYR4 2012
41 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DArsenicAtrazineBenzeneBenzo(A)PyreneChlorobenzeneCadmiumCarbon TetrachlorideChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylbenzeneGlyphosateLassoMercuryMonobromoacetic AcidPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
DELHI WATER SUPPLY
Phone
563-929-6978
Email
[email protected]

Frequently asked questions about Delhi Water Supply

Is Delhi Water Supply tap water safe to drink?

EPA monitoring detected 19 contaminants in Delhi Water Supply'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 Delhi Water Supply's water?

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

How many people does Delhi Water Supply serve?

Delhi Water Supply reports serving 420 people in Iowa, per its EPA record.

Has Delhi Water Supply had any water quality violations?

The EPA has 325 violations on file for Delhi Water Supply, of which 0 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.