Question 1

Is Viola water safe to drink?

Accepted Answer

Viola (PWS ID: IL1310450) has 861 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 970 people using Groundwater sources.

Question 2

How many people does Viola serve?

Accepted Answer

EPA SDWIS reports that Viola serves 970 people (this public water system's service population, not the municipal population of Viola or any other city). It is a Local-owned system using Groundwater water sources with 458 service connections. The operator address is listed in Viola, Illinois.

Question 3

What type of violations does Viola have?

Accepted Answer

Viola has 861 total violations: 179 health-based violations (MCL exceedances or treatment failures), 573 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 Viola water?

Accepted Answer

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

Question 5

What water source does Viola use?

Accepted Answer

Viola 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 Viola sit among U.S. public water systems?

Accepted Answer

According to EPA SDWIS population_served among sitemap-advertised systems (serving 500+), Viola ranks #20,148 of 29,740 by people served, and #897 of 1,310 in Illinois. Ordinals use population_served DESC among systems serving 500+ (the sitemap cohort). See /methodology#corpus-placement.

Question 8

How does Viola's violation count compare nationally?

Accepted Answer

Viola has 861 recorded EPA SDWIS violations, fewer than 1% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 99% of that cohort has fewer violations than Viola. 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
Combined Radium (-226 and -228)	MCL	142	2006
Coliform (TCR)	MR	55	2011
Public Notice	Other	44	2012
Gross Alpha, Excl. Radon and U	MCL	32	2005
cis-1,2-Dichloroethylene	MR	27	1993
o-Dichlorobenzene	MR	27	1993
1,1-Dichloroethylene	MR	27	1993
trans-1,2-Dichloroethylene	MR	27	1993
1,2-Dichloroethane	MR	27	1993
1,1,1-Trichloroethane	MR	27	1993
Carbon tetrachloride	MR	27	1993
1,2-Dichloropropane	MR	27	1993
Trichloroethylene	MR	27	1993
CHLOROBENZENE	MR	27	1993
Benzene	MR	27	1993
Toluene	MR	27	1993
Xylenes, Total	MR	27	1993
Tetrachloroethylene	MR	27	1993
Ethylbenzene	MR	27	1993
p-Dichlorobenzene	MR	27	1993
Styrene	MR	26	1993
Consumer Confidence Rule	Other	22	2010
Combined Radium (-226 and -228)	MR	19	2005
Combined Uranium	MR	19	2005
Gross Alpha, Excl. Radon and U	MR	17	2004
Coliform (TCR)	MCL	5	1999
Chlorine	MR	4	2011
Lead and Copper Rule	MR	1	1993

Viola

Viola standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Population served record for Viola

Nationwide peers

Cross-state systems with comparable violation load

Cross-state systems with smaller service footprints