Question 1

Is Sumner Water Supply water safe to drink?

Accepted Answer

Sumner Water Supply (PWS ID: IA0970006) has 156 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 2,030 people using Groundwater sources.

Question 2

How many people does Sumner Water Supply serve?

Accepted Answer

EPA SDWIS reports that Sumner Water Supply serves 2,030 people (this public water system's service population, not the municipal population of Sumner or any other city). It is a Local-owned system using Groundwater water sources with 900 service connections. The operator address is listed in Sumner, Iowa.

Question 3

What type of violations does Sumner Water Supply have?

Accepted Answer

Sumner Water Supply has 156 total violations: 0 health-based violations (MCL exceedances or treatment failures), 156 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 Sumner Water Supply water?

Accepted Answer

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

Question 5

What water source does Sumner Water Supply use?

Accepted Answer

Sumner Water Supply 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 Sumner Water Supply sit among U.S. public water systems?

Accepted Answer

According to EPA SDWIS population_served among sitemap-advertised systems (serving 500+), Sumner Water Supply ranks #13,424 of 29,740 by people served, and #201 of 545 in Iowa. Ordinals use population_served DESC among systems serving 500+ (the sitemap cohort). See /methodology#corpus-placement.

Question 8

How does Sumner Water Supply's violation count compare nationally?

Accepted Answer

Sumner Water Supply has 156 recorded EPA SDWIS violations, fewer than 18% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 82% of that cohort has fewer violations than Sumner Water Supply. 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
Nitrate	MR	12	2008
Total Haloacetic Acids (HAA5)	MR	4	2008
o-Dichlorobenzene	MR	4	2003
p-Dichlorobenzene	MR	4	2003
Vinyl chloride	MR	4	2003
trans-1,2-Dichloroethylene	MR	4	2003
1,2-Dichloroethane	MR	4	2003
Carbon tetrachloride	MR	4	2003
1,1,2-Trichloroethane	MR	4	2003
CHLOROBENZENE	MR	4	2003
1,2,4-Trichlorobenzene	MR	4	2003
Xylenes, Total	MR	4	2003
Simazine	MR	4	2003
Picloram	MR	4	2003
Dinoseb	MR	4	2003
2,4-D	MR	4	2003
2,4,5-TP	MR	4	2003
Benzo(a)pyrene	MR	4	2003
Coliform (TCR)	MR	4	2006
1,1,1-Trichloroethane	MR	4	2003
1,1-Dichloroethylene	MR	4	2003
Di(2-ethylhexyl) adipate	MR	4	2003
Di(2-ethylhexyl) phthalate	MR	4	2003
Toluene	MR	4	2003
Ethylbenzene	MR	4	2003
Trichloroethylene	MR	4	2003
DICHLOROMETHANE	MR	4	2003
Pentachlorophenol	MR	4	2003
Atrazine	MR	4	2003
Styrene	MR	4	2003

Sumner Water Supply

Sumner Water Supply standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Health-based violations on Sumner Water Supply

Nationwide peers

Cross-state systems with comparable violation load

Cross-state systems near this population served