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Community Water System · PWS ND0900945

Tower City City Of

Valley City, North Dakota 58072 - drinking water served from groundwater sources to 253 people, tracked in EPA SDWIS and UCMR5.

253
People served
63
EPA violations
12
Health-based
Untested
UCMR5 result

The verdict

EPA records 63 drinking-water violations at Tower City City Of, 19% of them health-based - above the North Dakota per-system average.

63
Total EPA violations on record
19%
Health-based (MCL / treatment failure)
253
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Tower City City Of

Tower City City Of is a local-owned community water system that delivers drinking water to 253 residents in Valley City, North Dakota (Cass County) through 98 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 63 total violations for this system , of which 12 (19%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 36 monitoring and reporting violations are on file. The most recent violation on record dates to 2015.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 24 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across North Dakota, EPA tracks 368 public water systems serving 712,349 people, with 13,624 cumulative violations and 2,673 health-based violations on record. About 94% of systems in the state carry at least one violation, and state-wide the average per system is 37 violations. Statewide, 34 of 38 UCMR5-tested systems have reported PFAS detections (89.5%).

Tower City City Of's 63 violations sit above the North Dakota average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
253
Total Violations
63
Health-Based Violations
12
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
98
County
Cass
School/Daycare
No
MCL Violations
12
Monitoring Violations
36
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 24 2015
Chlorine MR 11 2015
Coliform (TCR) MCL 7 2002
Nitrate-Nitrite MCL 5 1993
Coliform (TCR) Other 3 1992
Public Notice Other 2 2003
Lead and Copper Rule MR 1 2015

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Tower City City Of.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID ND0900945 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

North Dakota Drinking Water Authority

North Dakota's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find ND regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2015 Coliform (TCR) MR 24 SDWIS / ND0900945 / 3100
2015 Chlorine MR 11 SDWIS / ND0900945 / 0999
2015 Lead and Copper Rule MR 1 SDWIS / ND0900945 / 5000
2003 Public Notice Other 2 SDWIS / ND0900945 / 7500
2002 Coliform (TCR) MCL 7 SDWIS / ND0900945 / 3100
1993 Nitrate-Nitrite MCL 5 SDWIS / ND0900945 / 1038
1992 Coliform (TCR) Other 3 SDWIS / ND0900945 / 3100

How Tower City City Of Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Tower City City Of North Dakota avg Federal benchmark
Total violations 63 37 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 12 7.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 89.5% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 253 1,936 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 368 regulated public water systems in North Dakota.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Tower City City Of water safe to drink? ▼
Tower City City Of (PWS ID: ND0900945) has 63 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 253 people using Groundwater sources.
How many people does Tower City City Of serve? ▼
Tower City City Of serves 253 people in Valley City, North Dakota. It is a Local-owned system using Groundwater water sources with 98 service connections.
What type of violations does Tower City City Of have? ▼
Tower City City Of has 63 total violations: 12 health-based violations (MCL exceedances or treatment failures), 36 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Tower City City Of water? ▼
No PFAS testing data is available for Tower City City Of under the EPA's UCMR5 monitoring program.
What water source does Tower City City Of use? ▼
Tower City 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.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

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

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