Tap WaterIndex

Tap water quality report

Medina Co/Northwest

EPA monitoring tested this supplier for 44 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

44
contaminants tested
15
detected
46,324
people served
4
health-based violations
Water source
SWP
Ownership
Local government
Counties served
Medina

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.

4
health-based violations
20
violations on file
3
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1994-09-01 → 1994-09-30
MCL Health-based Resolved 1994-09-01 → 1994-09-30
MCL Health-based Resolved 1994-09-01 → 1994-09-30
MCL Health-based Resolved 1994-09-01 → 1994-09-30
Other Monitoring Unaddressed 2022-12-07
Other Monitoring Unaddressed 2021-01-13
Other Monitoring Unaddressed 2020-05-21
MR Monitoring Resolved 2019-01-01 → 2019-03-31
MR Monitoring Resolved 2019-01-01 → 2019-03-31
MR Monitoring Resolved 2019-01-01 → 2019-03-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0155 µg/L 1/2 2023

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
Bromodichloromethane
17.34 µg/L
No EPA limit set
worst single sample: 21.5 µg/L
124/124 SYR4 2012–2019
Chloroform
58.67 µg/L
No EPA limit set
worst single sample: 67.1 µg/L
124/124 SYR4 2012–2019
Dibromochloromethane
6.685 µg/L
No EPA limit set
worst single sample: 9.9 µg/L
124/124 SYR4 2012–2019
Dichloroacetic Acid
23.17 µg/L
No EPA limit set
worst single sample: 26.8 µg/L
124/124 SYR4 2012–2019
TTHM
81.34 µg/L 102%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 99.4 µg/L
124/124 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
42.71 µg/L 71%
of the EPA limit 60 µg/L
worst single sample: 46.6 µg/L
124/124 SYR4 2012–2019
Trichloroacetic Acid
16.405 µg/L
No EPA limit set
worst single sample: 22.4 µg/L
120/124 SYR4 2012–2019
Copper
566.1 µg/L 44%
of the EPA limit 1300 µg/L
worst single sample: 940 µg/L
83/235 SYR4 2012–2019
Dibromoacetic Acid
2 µg/L
No EPA limit set
worst single sample: 6.6 µg/L
81/124 SYR4 2012–2019
Bromoform
0.9340 µg/L
No EPA limit set
worst single sample: 0.9700 µg/L
34/124 SYR4 2012–2019
Monochloroacetic Acid
3.655 µg/L
No EPA limit set
worst single sample: 4 µg/L
30/124 SYR4 2012–2019
Lead
0.0013 mg/L 8.7%
of the EPA limit 0.0150 mg/L
 24/24 LCR 2025
Monobromoacetic Acid
1.765 µg/L
No EPA limit set
worst single sample: 1.8 µg/L
8/124 SYR4 2012–2019
Lead
37.71 µg/L 251%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 46.2 µg/L
7/235 SYR4 2012–2019
29 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaHfpo-DaNetfosaaNfdhaNmefosaaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaLithium

Frequently asked questions about Medina Co/Northwest

Is Medina Co/Northwest tap water safe to drink?

EPA monitoring detected 15 contaminants in Medina Co/Northwest'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 Medina Co/Northwest's water?

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

How many people does Medina Co/Northwest serve?

Medina Co/Northwest reports serving 46,324 people, per its EPA record.

Has Medina Co/Northwest had any water quality violations?

The EPA has 20 violations on file for Medina Co/Northwest, of which 4 are health-based (a contaminant limit or required treatment was breached) and 3 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.