Is Tioga City of Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
Counties served: Williams

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

violations on file

still open

Violation	Type	Status	Period
MR	Monitoring	Archived	2009-11-01 → 2009-11-30
MR	Monitoring	Archived	2009-11-01 → 2009-11-30
MR	Monitoring	Archived	2009-11-01 → 2009-11-30
MR	Monitoring	Resolved	2009-10-01 → 2009-12-31
MR	Monitoring	Resolved	2009-10-01 → 2009-12-31
MR	Monitoring	Resolved	2009-10-01 → 2009-12-31
MR	Monitoring	Resolved	2009-10-01 → 2009-12-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Dichloroacetic Acid	10.18 µg/L No EPA limit set worst single sample: 12.8 µg/L	25/25	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	12.568 µg/L 21% of the EPA limit 60 µg/L worst single sample: 13.58 µg/L	25/25	SYR4	2013–2019
Chloroform	12.2425 µg/L No EPA limit set worst single sample: 18.36 µg/L	24/25	SYR4	2013–2019
TTHM	18.304 µg/L 23% of the EPA limit 80 µg/L worst single sample: 24.32 µg/L	24/25	SYR4	2013–2019
Bromodichloromethane	4.769 µg/L No EPA limit set worst single sample: 4.98 µg/L	23/25	SYR4	2013–2019
Copper	39.3 µg/L 3% of the EPA limit 1300 µg/L worst single sample: 62.1 µg/L	16/20	SYR4	2014–2017
Dibromochloromethane	1.676 µg/L No EPA limit set worst single sample: 1.76 µg/L	15/25	SYR4	2013–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	6/6	LCR	2023
Trichloroacetic Acid	1.682 µg/L No EPA limit set worst single sample: 1.71 µg/L	5/25	SYR4	2013–2019
Lead	1.23 µg/L 8.2% of the EPA limit 15 µg/L	1/20	SYR4	2014–2017
Monochloroacetic Acid	2.69 µg/L No EPA limit set	1/25	SYR4	2013–2019

3 contaminants tested, none detected

BromoformDibromoacetic AcidMonobromoacetic Acid

Utility contact

Contact: SALINAS, ABBY
Phone: 701-664-2807
Email: [email protected]

Frequently asked questions about Tioga City of

Is Tioga City of tap water safe to drink?

EPA monitoring detected 11 contaminants in Tioga City of'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 Tioga City of's water?

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

How many people does Tioga City of serve?

Tioga City of reports serving 2,202 people in North Dakota, per its EPA record.

Has Tioga City of had any water quality violations?

The EPA has 7 violations on file for Tioga City of, 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.