Is Marsing City Of water safe to drink?

Marsing City Of (PWS ID: ID3370013) has 65 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 1,300 people using Groundwater sources.

How many people does Marsing City Of serve?

EPA SDWIS reports that Marsing City Of serves 1,300 people (this public water system's service population, not the municipal population of Marsing or any other city). It is a Local-owned system using Groundwater water sources with 480 service connections. The operator address is listed in Marsing, Idaho.

What type of violations does Marsing City Of have?

Marsing City Of has 65 total violations: 4 health-based violations (MCL exceedances or treatment failures), 61 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in Marsing City Of water?

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

What water source does Marsing City Of use?

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

Where does this data come from?

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.

Where does Marsing City Of sit among U.S. public water systems?

According to EPA SDWIS population_served among sitemap-advertised systems (serving 500+), Marsing City Of ranks #17,133 of 29,740 by people served, and #102 of 249 in Idaho. Ordinals use population_served DESC among systems serving 500+ (the sitemap cohort). See /methodology#corpus-placement.

How does Marsing City Of's violation count compare nationally?

Marsing City Of has 65 recorded EPA SDWIS violations, fewer than 36% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 63% of that cohort has fewer violations than Marsing City Of. 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.

States → Idaho

Community Water System · PWS ID3370013

Marsing City Of

Operator location Marsing, Idaho - 6% of 65 violations are health-based (middle-third health share (≤ 23%)); groundwater source; 1,300 served per SDWIS.

Compiled by PlainWater · May 15, 2026

1,300
People served (this PWS) Middle third of systems: 65
EPA violations (this PWS) Middle third of systems: 4
Health-based (this PWS) Middle third by health-based share: Untested
UCMR5 (this PWS) No UCMR5 result

Follow published updates (RSS)

Marsing City Of standing, mid SDWIS violation third

6% of 65 recorded violations are health-based - middle-third health share (≤ 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 6% is middle-third health share (≤ 23%). Population rank #17,133 of 29,740 among systems serving 500+.

The verdict

Marsing City Of lands in the middle third by violation volume (65), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is mid-pack at 1,300 (mid served population (≤ 3,309)). Health-based share is 6% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.

#17,133 of 29,740
Population · /systems: #102 of 249
Population · ID: 65
Total EPA violations on record: 6%
Health-based (MCL / treatment failure)

Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.

Water Safety Score

36/100

Marsing City Of

Based on EPA SDWIS violation history and UCMR5 PFAS testing only, not water taste, odor, infrastructure age, or contaminants outside the federally tracked set.

Health-based violations D

EPA SDWIS health-based violations on record (MCL, MRDL, treatment technique)

Monitoring & reporting violations F

Non-health SDWIS violations (monitoring, reporting, and other compliance)

PFAS contamination N/A

Not UCMR5-tested

Highest PFAS compound level detected in UCMR5 testing

System Details

System Type: Community
Owner Type: Local
Connections: 480
County: Owyhee
School/Daycare: No
MCL Violations: 4
Monitoring Violations: 61
Treatment Tech Violations: 0

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Arsenic	MCL	3	2008
E. COLI	MR	3	2021
Carbon tetrachloride	MR	2	2002
1,1-Dichloroethylene	MR	2	2002
p-Dichlorobenzene	MR	2	2002
Ethylbenzene	MR	2	2002
CHLOROBENZENE	MR	2	2002
Toluene	MR	2	2002
Xylenes, Total	MR	2	2002
1,2,4-Trichlorobenzene	MR	2	2002
Nitrate	MR	2	2000
cis-1,2-Dichloroethylene	MR	2	2002
DICHLOROMETHANE	MR	2	2002
1,2-Dichloroethane	MR	2	2002
1,2-Dichloropropane	MR	2	2002
1,1,2-Trichloroethane	MR	2	2002
Tetrachloroethylene	MR	2	2002
Benzene	MR	2	2002
Styrene	MR	2	2002
Coliform (TCR)	MR	2	1995
1,1,1-Trichloroethane	MR	2	2002
Trichloroethylene	MR	2	2002
o-Dichlorobenzene	MR	2	2002
trans-1,2-Dichloroethylene	MR	2	2002
Barium	MR	1	1993
Mercury	MR	1	1993
Selenium	MR	1	1993
Antimony, Total	MR	1	1993
Beryllium, Total	MR	1	1993
Vinyl chloride	MR	1	2002

Violation Count vs. the National Corpus

Marsing City Of has 65 recorded EPA violations, 63% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 36% carry more. 6% of this system's own violations are health-based (4 of 65), and it ranks #17,133 of 29,740 by population served among that same cohort.

EPA violations vs. the national water-system corpus

Public water systems serving 500+ people (EPA SDWIS)

65 Around the middle fewer violations than 36% of 29,740 water systems

the national water-system corpus, bucketed by value

Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source EPA SDWIS · 2026-05-15

How many violations vs. how serious, among peer systems

Marsing City Of plotted against 29 peer public water systems (500+ people served), by total violation count (x) and the share of those violations that are health-based (y). The crosshair sits at this sample's own median on each axis. A high violation count does not automatically mean a serious record: most monitoring and reporting violations are minor, not health-based.

30 public water systems (500+ people served), EPA SDWIS current release.

How to read this

Each dot is one public water system; the highlighted dot is Marsing City Of. A system to the right has more recorded violations; a system higher up has a larger share of those violations classified health-based rather than monitoring or reporting.

Rare but serious: few violations, but most of them are health-based.
Frequent, mostly paperwork: many violations, but mostly monitoring or reporting, not health-based.
Clean record: below-median on both counts, the tinted corner.

View all 30 systems as a list

City of Ballinger: 372 violations, 85% health-based
Nooksack Valley Water Association: 16 violations, 31% health-based
Montgomery Co RWD 12: 7 violations, 29% health-based
Irvin Water District #6: 11 violations, 27% health-based
Ticonderoga WD: 47 violations, 26% health-based
Pine Valley Plantation: 37 violations, 24% health-based
McLouth, City Of: 29 violations, 17% health-based
Kipling Oaks 1: 25 violations, 16% health-based
South Deerfield Water Supply District: 96 violations, 16% health-based
Sunset Ridge Water District: 82 violations, 15% health-based
Orange Water Dept: 136 violations, 14% health-based
Mount Pleasant Water Sys #1: 167 violations, 11% health-based
Marsing City Of: 65 violations, 6% health-based (this system)
Lake Gibson Estates: 42 violations, 2% health-based
Benson Culinary Improvement District: 212 violations, 1% health-based
Conemaugh Twp Muni Auth: 567 violations, 1% health-based
Miccosukee Service Plaza: 0 violations, 0% health-based
Brazoria - Fort Bend Counties MUD 3: 0 violations, 0% health-based
Tanglewilde Thompson Place 600: 2 violations, 0% health-based
Center Water Co: 5 violations, 0% health-based
Spring Mills Elem School/Hvs: 9 violations, 0% health-based
Great Bend Industrial Park: 14 violations, 0% health-based
Glen Park Village: 19 violations, 0% health-based
Camp Is-Sho-Da: 22 violations, 0% health-based
Hamilton: 33 violations, 0% health-based
Town of Welaka: 54 violations, 0% health-based
Township of Blairstown Dpw: 61 violations, 0% health-based
McIntosh Water & Fire Pro Authority: 71 violations, 0% health-based
Clarkdale Municipal Water System: 114 violations, 0% health-based
Eureka Water Association: 273 violations, 0% health-based

Health-based violations on Marsing City Of

4 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for ID3370013.

EPA SDWIS · PWS ID3370013

Sources: EPA SDWIS

Nationwide peers

65 violations · 1,300 served: nearest cross-state SDWIS matches.

Cross-state systems near this violation count

Nearest cross-state community systems (500+ served) by total SDWIS violations on record.

4 peers

Cross-state systems near this population served

Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).

4 peers

What to do with Marsing City Of

Use this system's EPA-reported record as a starting filter, not a final verdict.

See how every tracked system in Idaho compares on the same EPA violation measures. Idaho systems
Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
Find and compare another public water system by name or PWSID. Search systems

EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Compiled by PlainWater, Drinking Water Quality Editorial Process · May 15, 2026

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.