Is Corning Muni Water Department Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
Counties served: Adams

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.

health-based violations

528

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2016-11-01 → 2016-11-30
MCL	Health-based	Resolved	2016-11-01 → 2016-11-30
MCL	Health-based	Resolved	2016-11-01 → 2016-11-30
MCL	Health-based	Resolved	2016-11-01 → 2016-11-30
MCL	Health-based	Resolved	2016-11-01 → 2016-11-30
TT	Health-based	Resolved	2016-07-01 → 2016-07-31
TT	Health-based	Resolved	2016-07-01 → 2016-07-31
TT	Health-based	Resolved	2016-07-01 → 2016-07-31
MR	Monitoring	Resolved	2024-07-01 → 2025-06-30
MR	Monitoring	Resolved	2024-07-01 → 2025-06-30

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 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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Chlorite	784.5 µg/L 78% of the EPA limit 1000 µg/L worst single sample: 1140 µg/L	242/291	SYR4	2012–2019
Fluoride	720 µg/L 18% of the EPA limit 4000 µg/L worst single sample: 1000 µg/L	79/98	SYR4	2012–2019
Bromodichloromethane	15.345 µg/L No EPA limit set worst single sample: 18.5 µg/L	72/72	SYR4	2012–2019
Chloroform	71.4 µg/L No EPA limit set worst single sample: 77.7 µg/L	72/72	SYR4	2012–2019
Dibromochloromethane	5.6705 µg/L No EPA limit set worst single sample: 6.51 µg/L	72/72	SYR4	2012–2019
Dichloroacetic Acid	28.515 µg/L No EPA limit set worst single sample: 40.4 µg/L	72/72	SYR4	2012–2019
TTHM	89.075 µg/L 111% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 95.9 µg/L	72/72	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	56.22 µg/L 94% of the EPA limit 60 µg/L worst single sample: 87.3 µg/L	72/72	SYR4	2012–2019
Trichloroacetic Acid	16.385 µg/L No EPA limit set worst single sample: 27.3 µg/L	72/72	SYR4	2012–2019
Dibromoacetic Acid	1.947 µg/L No EPA limit set worst single sample: 2.4 µg/L	67/72	SYR4	2012–2019
Monochloroacetic Acid	21.07 µg/L No EPA limit set worst single sample: 50 µg/L	48/72	SYR4	2012–2019
Copper	241.1 µg/L 19% of the EPA limit 1300 µg/L worst single sample: 243 µg/L	20/20	SYR4	2014–2017
Lead	6.2 µg/L 41% of the EPA limit 15 µg/L worst single sample: 9.5 µg/L	16/20	SYR4	2014–2017
Lead	0.0025 mg/L 17% of the EPA limit 0.0150 mg/L	12/12	LCR	2023
Nitrate	300 µg/L 3% of the EPA limit 10000 µg/L	6/16	SYR4	2012–2019
Bromoform	0.7570 µg/L No EPA limit set worst single sample: 0.7600 µg/L	4/72	SYR4	2012–2019
Monobromoacetic Acid	22.6295 µg/L No EPA limit set worst single sample: 26 µg/L	4/72	SYR4	2012–2019
Atrazine	0.3510 µg/L 12% of the EPA limit 3 µg/L worst single sample: 0.3600 µg/L	3/11	SYR4	2012–2019
1,2,4-Trichlorobenzene	2.48 µg/L 3.5% of the EPA limit 70 µg/L	1/3	SYR4	2013–2019
Barium	70.7 µg/L 3.5% of the EPA limit 2000 µg/L	1/1	SYR4	2013
Combined Radium (-226 And -228)	2.5 pCi/L 50% of the EPA limit 5 pCi/L	1/2	SYR4	2012–2018
Nitrite	220 µg/L 22% of the EPA limit 1000 µg/L	1/10	SYR4	2014–2019

41 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosBenzeneBenzo(A)PyreneChlorobenzeneCadmiumCarbon TetrachlorideChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylbenzeneGlyphosateLassoMercuryPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: PEOPLE SERVICE INC (CORNING)
Phone: 641-247-1614
Email: ndrake@peopleservice.com

Frequently asked questions about Corning Muni Water Department

Is Corning Muni Water Department tap water safe to drink?

EPA monitoring detected 22 contaminants in Corning Muni 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 Corning Muni Water Department's water?

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

How many people does Corning Muni Water Department serve?

Corning Muni Water Department reports serving 1,735 people in Iowa, per its EPA record.

Has Corning Muni Water Department had any water quality violations?

The EPA has 528 violations on file for Corning Muni Water Department, of which 8 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.