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Tap water quality report

Aqua Ohio - Tiffin

EPA monitoring tested this supplier for 99 contaminants and detected 25. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

99
contaminants tested
25
detected
20,279
people served
30
health-based violations
Ohio rankingsLead in OhioPFAS in Ohio
Water source
Surface water
Ownership
Private
Counties served
Seneca

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.

30
health-based violations
37
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2002-12-01 → 2002-12-31
MCL Health-based Resolved 2002-12-01 → 2002-12-31
MCL Health-based Resolved 2002-12-01 → 2002-12-31
MCL Health-based Resolved 2002-12-01 → 2002-12-31
TT Health-based Resolved 1993-12-01 → 1993-12-31
TT Health-based Resolved 1993-12-01 → 1993-12-31
TT Health-based Resolved 1993-12-01 → 1993-12-31
TT Health-based Resolved 1993-11-01 → 1993-11-30
TT Health-based Resolved 1993-11-01 → 1993-11-30
TT Health-based Resolved 1993-11-01 → 1993-11-30

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
Nitrate
7928.5 µg/L 79%
of the EPA limit 10000 µg/L
worst single sample: 11100 µg/L
222/228 SYR4 2012–2019
Bromodichloromethane
21.205 µg/L
No EPA limit set
worst single sample: 28.1 µg/L
134/134 SYR4 2012–2019
Chloroform
55.99 µg/L
No EPA limit set
worst single sample: 77.4 µg/L
134/134 SYR4 2012–2019
Dichloroacetic Acid
22.745 µg/L
No EPA limit set
worst single sample: 32.3 µg/L
132/132 SYR4 2012–2019
TTHM
82.995 µg/L 104%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 97.6 µg/L
132/132 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
51.145 µg/L 85%
of the EPA limit 60 µg/L
worst single sample: 76.8 µg/L
132/132 SYR4 2012–2019
Trichloroacetic Acid
25.625 µg/L
No EPA limit set
worst single sample: 42.1 µg/L
132/132 SYR4 2012–2019
Dibromochloromethane
10.15 µg/L
No EPA limit set
worst single sample: 14.3 µg/L
131/131 SYR4 2012–2019
Copper
254 µg/L 20%
of the EPA limit 1300 µg/L
worst single sample: 730 µg/L
93/124 SYR4 2013–2019
Dibromoacetic Acid
2.585 µg/L
No EPA limit set
worst single sample: 3.4 µg/L
64/132 SYR4 2012–2019
Lead
14.7 µg/L 98%
of the EPA limit 15 µg/L
worst single sample: 53 µg/L
47/124 SYR4 2013–2019
Bromoform
2.05 µg/L
No EPA limit set
worst single sample: 3.5 µg/L
46/132 SYR4 2012–2019
Lead
0.0054 mg/L 36%
of the EPA limit 0.0150 mg/L
 26/26 LCR 2025
Monochloroacetic Acid
5.375 µg/L
No EPA limit set
worst single sample: 6.3 µg/L
26/132 SYR4 2012–2019
Atrazine
3.815 µg/L 127%
of the EPA limit, at the 95th percentile of samples — 3 µg/L
worst single sample: 5.3 µg/L
24/35 SYR4 2012–2019
Nitrate-Nitrite
4382.5 µg/L 44%
of the EPA limit 10000 µg/L
worst single sample: 4420 µg/L
22/25 SYR4 2013–2019
Simazine
0.3590 µg/L 9%
of the EPA limit 4 µg/L
worst single sample: 0.3800 µg/L
15/35 SYR4 2012–2019
Fluoride
998 µg/L 25%
of the EPA limit 4000 µg/L
worst single sample: 1010 µg/L
9/9 SYR4 2012–2019
Barium
83.825 µg/L 4.2%
of the EPA limit 2000 µg/L
worst single sample: 91 µg/L
8/9 SYR4 2012–2019
Monobromoacetic Acid
3.66 µg/L
No EPA limit set
worst single sample: 3.8 µg/L
8/132 SYR4 2012–2019
Lithium
14.7 µg/L
No EPA limit set
 2/4 UCMR-5 2024
Cadmium
0.8000 µg/L 16%
of the EPA limit 5 µg/L
 1/9 SYR4 2012–2019
Combined Radium (-226 And -228)
1.3 pCi/L 26%
of the EPA limit 5 pCi/L
 1/1 SYR4 2018
Gross Beta Particle Activity
7.4 pCi/L
No EPA limit set
 1/1 SYR4 2018
Toluene
0.6100 µg/L 0.1%
of the EPA limit 1000 µg/L
 1/9 SYR4 2012–2019
74 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-PF3ONSAdonaAntimony, TotalArsenicAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCarbofuranCarbon TetrachlorideChromiumDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDiquatEndothallEthylbenzeneGlyphosateHfpo-DaLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTotal Polychlorinated Biphenyls (PCB)TrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
AQUA OHIO INC - TIFFIN
Phone
740-383-0939
Email
[email protected]

Frequently asked questions about Aqua Ohio - Tiffin

Is Aqua Ohio - Tiffin tap water safe to drink?

EPA monitoring detected 25 contaminants in Aqua Ohio - Tiffin'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 Aqua Ohio - Tiffin's water?

EPA monitoring detected Nitrate, Bromodichloromethane, Chloroform, Dichloroacetic Acid, TTHM, and others. The full list with the level and data source for each is above.

How many people does Aqua Ohio - Tiffin serve?

Aqua Ohio - Tiffin reports serving 20,279 people in Ohio, per its EPA record.

Has Aqua Ohio - Tiffin had any water quality violations?

The EPA has 37 violations on file for Aqua Ohio - Tiffin, of which 30 are health-based (a contaminant limit or required treatment was breached) and 1 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.