Marshalltown Water Quality
Iowa
According to EPA SDWIS, Marshalltown, Iowa is served by 16 community water systems covering about 35,420 people. The same extract lists 22 health-based violation records, most recently coded 1040 in 2024. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Marshalltown, Iowa is delivered through 16 EPA-regulated community water systems serving an estimated 35,420 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 22 violation records across the 16 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 1 distinct EPA contaminant code: Nitrate. 5 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Iowa drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| MARSHALLTOWN WATER WORKS | 27,680 | 0 | Clean |
| ACKLEY MUNICIPAL WATER WORKS | 1,599 | 0 | Clean |
| CLARKSVILLE WATER SUPPLY | 1,254 | 0 | Clean |
| CRESCENT WATER SUPPLY | 778 | 0 | Clean |
| HOSPERS MUNICIPAL WATER DEPT | 718 | 0 | Clean |
| DUMONT WATER SUPPLY | 635 | 0 | Clean |
| NEW HARTFORD WATER SUPPLY | 570 | 0 | Clean |
| MARSHALLTOWN ESTATES | 382 | 0 | Clean |
| ANDREW WATER SUPPLY | 380 | 0 | Clean |
| MONDAMIN WATER SUPPLY | 339 | 0 | Clean |
| SILVER CITY WATER SUPPLY | 245 | 0 | Clean |
| LA MOTTE WATER SUPPLY | 237 | 0 | Clean |
| RANDOLPH WATER WORKS | 192 | 0 | Clean |
| HASTINGS WATER SUPPLY | 152 | 22 | Health |
| SWALEDALE WATER SUPPLY | 144 | 0 | Clean |
| HICKORY ACRES | 115 | 0 | Clean |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| HASTINGS WATER SUPPLY | Nitrate | 2024-04-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2024-04-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2024-04-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2024-03-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2024-03-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2024-03-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-12-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-12-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-12-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-11-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-11-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-11-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-05-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-05-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-05-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-05-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-05-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-04-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-04-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-04-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-04-01 |
| HASTINGS WATER SUPPLY | Nitrate | 2023-04-01 |
What are Marshalltown's health-based records for?
Every health-based violation record in Marshalltown carries one EPA contaminant or rule code. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Nitrate | 22 | 1 |
TRI Facilities in Marshalltown
| Facility | Total Releases |
|---|---|
| Swift Pork | 9.2M lbs |
| Diamond Vogel Inc. | 5.5K lbs |
| Fisher Controls International LLC | 1.7K lbs |
| Lennox Industries Inc | 102 lbs |
| Forterra Concrete Products - Marshalltown | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Marshalltown, Iowa? ▼
How many water violations does Marshalltown have in this EPA extract? ▼
What contaminants were found in Marshalltown water? ▼
How many water systems serve Marshalltown? ▼
Where does Marshalltown get its drinking water? ▼
Are there pollution sources near Marshalltown? ▼
How does Marshalltown compare in Iowa?
Of the 598 Iowa places with at least one community water system on file, Marshalltown ranks #6 by number of systems (16).
Either side of it: Fort Dodge (18), Cedar Rapids (17), Iowa City (15), Davenport (14)
About This Data
Figures here are the current EPA SDWIS extract joined to the 16 community water systems whose service area lists Marshalltown, ranked against the 598 Iowa places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.