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Tap water quality report

Mendota Mental Health Inst

EPA monitoring tested this supplier for 74 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

74
contaminants tested
19
detected
2,787
people served
1
health-based violations
Wisconsin rankingsLead in WisconsinPFAS in Wisconsin
Water source
Ground water
Ownership
State government
Counties served
Dane

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.

1
health-based violations
17
violations on file
1
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2012-01-01
MON Monitoring Resolved 2020-11-01 → 2020-11-30
MON Monitoring Resolved 2020-11-01 → 2020-11-30
MON Monitoring Resolved 2020-11-01 → 2020-11-30
MON Monitoring Resolved 2020-11-01 → 2020-11-30
MON Monitoring Resolved 2020-07-01 → 2020-07-31
MON Monitoring Resolved 2020-07-01 → 2020-07-31
MON Monitoring Resolved 2020-07-01 → 2020-07-31
MON Monitoring Resolved 2020-07-01 → 2020-07-31
MR Monitoring Resolved 2014-01-01

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
Copper
1300 µg/L 100%
of the EPA limit 1300 µg/L
worst single sample: 2300 µg/L
175/176 SYR4 2012–2019
Lead
7.71 µg/L 51%
of the EPA limit 15 µg/L
worst single sample: 55 µg/L
139/176 SYR4 2012–2019
Fluoride
1360 µg/L 34%
of the EPA limit 4000 µg/L
worst single sample: 1590 µg/L
101/196 SYR4 2012–2019
Lead
0.0070 mg/L 47%
of the EPA limit 0.0150 mg/L
 25/25 LCR 2025
Nitrate
4640 µg/L 46%
of the EPA limit 10000 µg/L
worst single sample: 4700 µg/L
24/24 SYR4 2012–2019
TTHM
2.974 µg/L 3.7%
of the EPA limit 80 µg/L
worst single sample: 3.16 µg/L
7/7 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
1.797 µg/L 3%
of the EPA limit 60 µg/L
worst single sample: 1.83 µg/L
7/7 SYR4 2013–2019
Dibromoacetic Acid
0.7050 µg/L
No EPA limit set
worst single sample: 0.7300 µg/L
6/7 SYR4 2013–2019
Dibromochloromethane
1.158 µg/L
No EPA limit set
worst single sample: 1.2 µg/L
5/9 SYR4 2013–2019
Barium
73.1 µg/L 3.7%
of the EPA limit 2000 µg/L
worst single sample: 80 µg/L
4/4 SYR4 2014–2017
Chromium
3.48 µg/L 3.5%
of the EPA limit 100 µg/L
worst single sample: 3.6 µg/L
4/4 SYR4 2014–2017
Nitrate-Nitrite
4275 µg/L 43%
of the EPA limit 10000 µg/L
worst single sample: 4500 µg/L
4/4 SYR4 2014–2017
Combined Radium (-226 And -228)
3.887 pCi/L 78%
of the EPA limit 5 pCi/L
worst single sample: 4.081 pCi/L
3/3 SYR4 2014–2017
Dichloroacetic Acid
0.5930 µg/L
No EPA limit set
worst single sample: 0.6000 µg/L
3/7 SYR4 2013–2019
Bromodichloromethane
0.9560 µg/L
No EPA limit set
worst single sample: 0.9800 µg/L
2/8 SYR4 2013–2019
Gross Alpha, Excl. Radon And U
3.074 pCi/L 20%
of the EPA limit 15 pCi/L
worst single sample: 3.18 pCi/L
2/2 SYR4 2014
Monobromoacetic Acid
0.4790 µg/L
No EPA limit set
worst single sample: 0.4800 µg/L
2/7 SYR4 2013–2019
Bromoform
0.8000 µg/L
No EPA limit set
 1/7 SYR4 2013–2019
Trichloroacetic Acid
0.2300 µg/L
No EPA limit set
 1/7 SYR4 2013–2019
55 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDinosebDiquatEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Frequently asked questions about Mendota Mental Health Inst

Is Mendota Mental Health Inst tap water safe to drink?

EPA monitoring detected 19 contaminants in Mendota Mental Health Inst'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 Mendota Mental Health Inst's water?

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

How many people does Mendota Mental Health Inst serve?

Mendota Mental Health Inst reports serving 2,787 people in Wisconsin, per its EPA record.

Has Mendota Mental Health Inst had any water quality violations?

The EPA has 17 violations on file for Mendota Mental Health Inst, of which 1 is 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.