Question 1

Is Hortonville Water Utility water safe to drink?

Accepted Answer

Hortonville Water Utility (PWS ID: WI4450411) has 54 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 3,028 people using Groundwater sources.

Question 2

How many people does Hortonville Water Utility serve?

Accepted Answer

EPA SDWIS reports that Hortonville Water Utility serves 3,028 people (this public water system's service population, not the municipal population of Hortonville or any other city). It is a Local-owned system using Groundwater water sources with 1,137 service connections. The operator address is listed in Hortonville, Wisconsin.

Question 3

What type of violations does Hortonville Water Utility have?

Accepted Answer

Hortonville Water Utility has 54 total violations: 2 health-based violations (MCL exceedances or treatment failures), 49 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Question 4

Has PFAS been detected in Hortonville Water Utility water?

Accepted Answer

No PFAS testing data is available for Hortonville Water Utility under the EPA's UCMR5 monitoring program.

Question 5

What water source does Hortonville Water Utility use?

Accepted Answer

Hortonville Water Utility uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

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 Hortonville Water Utility sit among U.S. public water systems?

Accepted Answer

According to EPA SDWIS population_served among sitemap-advertised systems (serving 500+), Hortonville Water Utility ranks #10,530 of 29,740 by people served, and #204 of 744 in Wisconsin. Ordinals use population_served DESC among systems serving 500+ (the sitemap cohort). See /methodology#corpus-placement.

Question 8

How does Hortonville Water Utility's violation count compare nationally?

Accepted Answer

Hortonville Water Utility has 54 recorded EPA SDWIS violations, fewer than 41% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 59% of that cohort has fewer violations than Hortonville Water Utility. 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
Revised Total Coliform Rule	MON	4	2025
LEAD AND COPPER RULE REVISIONS	TT	2	2024
Coliform (TCR)	MR	2	1994
cis-1,2-Dichloroethylene	MR	2	1998
DICHLOROMETHANE	MR	2	1998
o-Dichlorobenzene	MR	2	1998
p-Dichlorobenzene	MR	2	1998
Vinyl chloride	MR	2	1998
1,1-Dichloroethylene	MR	2	1998
trans-1,2-Dichloroethylene	MR	2	1998
1,2-Dichloroethane	MR	2	1998
1,1,1-Trichloroethane	MR	2	1998
1,1,2-Trichloroethane	MR	2	1998
CHLOROBENZENE	MR	2	1998
Benzene	MR	2	1998
Toluene	MR	2	1998
1,2,4-Trichlorobenzene	MR	2	1998
Carbon tetrachloride	MR	2	1998
1,2-Dichloropropane	MR	2	1998
Trichloroethylene	MR	2	1998
Tetrachloroethylene	MR	2	1998
Ethylbenzene	MR	2	1998
Styrene	MR	2	1998
Xylenes, Total	MR	2	1998
Lead and Copper Rule	MR	1	1994
Public Notice	Other	1	2024

Hortonville Water Utility

Hortonville Water Utility standing, mid SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Health-based violations on Hortonville Water Utility

Nationwide peers

Cross-state systems near this violation count

Cross-state systems near this population served