Question 1

Is McDonalds Vernon water safe to drink?

Accepted Answer

McDonalds Vernon (PWS ID: WI2682450) has 118 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 1,250 people using Groundwater sources.

Question 2

How many people does McDonalds Vernon serve?

Accepted Answer

EPA SDWIS reports that McDonalds Vernon serves 1,250 people (this public water system's service population, not the municipal population of Waukesha or any other city). It is a Private-owned system using Groundwater water sources with 1 service connections. The operator address is listed in Waukesha, Wisconsin.

Question 3

What type of violations does McDonalds Vernon have?

Accepted Answer

McDonalds Vernon has 118 total violations: 29 health-based violations (MCL exceedances or treatment failures), 85 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Question 4

Has PFAS been detected in McDonalds Vernon water?

Accepted Answer

No PFAS testing data is available for McDonalds Vernon under the EPA's UCMR5 monitoring program.

Question 5

What water source does McDonalds Vernon use?

Accepted Answer

McDonalds Vernon uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.

Question 6

Where does this data come from?

Accepted Answer

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Question 7

Where does McDonalds Vernon sit among U.S. public water systems?

Accepted Answer

According to EPA SDWIS population_served among sitemap-advertised systems (serving 500+), McDonalds Vernon ranks #17,494 of 29,740 by people served, and #366 of 744 in Wisconsin. Ordinals use population_served DESC among systems serving 500+ (the sitemap cohort). See /methodology#corpus-placement.

Question 8

How does McDonalds Vernon's violation count compare nationally?

Accepted Answer

McDonalds Vernon has 118 recorded EPA SDWIS violations, fewer than 23% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 76% of that cohort has fewer violations than McDonalds Vernon. A system can have zero recorded violations and still be actively monitored, and a high violation count often reflects a system that reports thoroughly, not necessarily one with worse water.

Contaminant	Category	Count	Latest
Coliform (TCR)	MCL	29	2014
Coliform (TCR)	MR	16	2013
Lead and Copper Rule	MR	12	1995
Revised Total Coliform Rule	MON	8	2019
Nitrate	MR	5	2003
Public Notice	Other	4	2011
Toluene	MR	2	1995
Carbon tetrachloride	MR	2	1995
1,1-Dichloroethylene	MR	2	1995
o-Dichlorobenzene	MR	2	1995
DICHLOROMETHANE	MR	2	1995
CHLOROBENZENE	MR	2	1995
Tetrachloroethylene	MR	2	1995
1,1,2-Trichloroethane	MR	2	1995
1,1,1-Trichloroethane	MR	2	1995
1,2,4-Trichlorobenzene	MR	2	1995
Benzene	MR	2	1995
1,2-Dichloropropane	MR	2	1995
trans-1,2-Dichloroethylene	MR	2	1995
Xylenes, Total	MR	2	1995
Ethylbenzene	MR	2	1995
Glyphosate	MR	2	2001
Styrene	MR	2	1995
Trichloroethylene	MR	2	1995
p-Dichlorobenzene	MR	2	1995
Vinyl chloride	MR	2	1995
cis-1,2-Dichloroethylene	MR	2	1995
1,2-Dichloroethane	MR	2	1995

McDonalds Vernon

McDonalds Vernon standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Health-based violations on McDonalds Vernon

Nationwide peers

Cross-state systems with comparable violation load

Cross-state systems near this population served