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Marianapolis Prep School - St Johns

EPA monitoring tested this supplier for 73 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

73
contaminants tested
11
detected
128
people served
43
health-based violations
Connecticut rankingsLead in ConnecticutPFAS in Connecticut
Water source
Ground water
Ownership
Private
Counties served
Windham

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.

43
health-based violations
395
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2024-10-17
MCL Health-based Resolved 2007-07-01 → 2007-09-30
MCL Health-based Resolved 2007-07-01 → 2007-09-30
MCL Health-based Resolved 2007-07-01 → 2007-09-30
MCL Health-based Resolved 2007-07-01 → 2007-09-30
MCL Health-based Resolved 2003-06-01 → 2003-06-30
MCL Health-based Resolved 2003-06-01 → 2003-06-30
MCL Health-based Resolved 2003-06-01 → 2003-06-30
MCL Health-based Resolved 2003-06-01 → 2003-06-30
MCL Health-based Resolved 2003-04-01 → 2003-04-30

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
Copper
352 µg/L 27%
of the EPA limit 1300 µg/L
worst single sample: 487 µg/L
21/21 SYR4 2012–2019
Lead
0.0074 mg/L 49%
of the EPA limit 0.0150 mg/L
 19/19 LCR 2025
Nitrate
2370 µg/L 24%
of the EPA limit 10000 µg/L
 10/20 SYR4 2012–2019
Lead
6.6 µg/L 44%
of the EPA limit 15 µg/L
worst single sample: 9 µg/L
9/21 SYR4 2012–2019
Nitrate-Nitrite
1902 µg/L 19%
of the EPA limit 10000 µg/L
worst single sample: 2370 µg/L
5/10 SYR4 2012–2019
P-Dichlorobenzene
2.6795 µg/L 3.6%
of the EPA limit 75 µg/L
worst single sample: 2.9 µg/L
4/23 SYR4 2012–2019
Barium
7 µg/L 0.4%
of the EPA limit 2000 µg/L
 1/2 SYR4 2016–2019
Bromodichloromethane
0.7100 µg/L
No EPA limit set
 1/23 SYR4 2012–2019
Bromoform
0.5900 µg/L
No EPA limit set
 1/23 SYR4 2012–2019
Chloroform
9.7 µg/L
No EPA limit set
 1/23 SYR4 2012–2019
Dibromochloromethane
0.6900 µg/L
No EPA limit set
 1/23 SYR4 2012–2019
62 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndrinEthylbenzeneFluorideGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
VITALIS, RANDY
Phone
860-923-9565
Email
[email protected]

Frequently asked questions about Marianapolis Prep School - St Johns

Is Marianapolis Prep School - St Johns tap water safe to drink?

EPA monitoring detected 11 contaminants in Marianapolis Prep School - St Johns'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 Marianapolis Prep School - St Johns's water?

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

How many people does Marianapolis Prep School - St Johns serve?

Marianapolis Prep School - St Johns reports serving 128 people in Connecticut, per its EPA record.

Has Marianapolis Prep School - St Johns had any water quality violations?

The EPA has 395 violations on file for Marianapolis Prep School - St Johns, of which 43 are health-based (a contaminant limit or required treatment was breached) and 2 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.