Public water system · WY5601622
ActiveTerrace Ii Mhc
At a glance
Terrace Ii Mhc (PWSID WY5601622) is an active community water system in Natrona County, Wyoming. It reports serving 320 people through 128 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
320
Service connections
128
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Terrace Ii Mhc compare with other water systems in Natrona County?
By EPA's size categories, Terrace Ii Mhc is a very small system (500 people or fewer). Natrona County has 48 active public water systems. Its population served is well below the county average of 1,680 people per system, and accounts for 0.4% of the 80,646 people reported by systems filed under the county. Across Wyoming, the 775 active systems average 838 people each. Nationally, the average active community water system reports serving 6,703 people, so Terrace Ii Mhc is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Wyoming has 332 active community water systems, 43% of the state's 775 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 79 Wyoming systems (10%) list purchased surface water as their primary source.
Who owns and regulates Terrace Ii Mhc?
EPA lists Terrace Ii Mhc as privately owned. The WY state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 25 of the 48 active systems in Natrona County (52%) are also privately owned.
Does Terrace Ii Mhc have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Terrace Ii Mhc. For the latest compliance status, check EPA ECHO for current compliance history.
Terrace Ii Mhc: frequently asked questions
Who runs Terrace Ii Mhc?
Terrace Ii Mhc (PWSID WY5601622) is a community water system privately owned. It is regulated by the WY state drinking water program.
How many people does Terrace Ii Mhc serve?
Terrace Ii Mhc reports serving 320 people through 128 service connections in Natrona County, Wyoming.
Where does Terrace Ii Mhc get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Terrace Ii Mhc have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Terrace Ii Mhc's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's Safe Drinking Water Act records list no violations for this system. For current results, consult the system's annual water quality report, EPA ECHO, or the WY state drinking water program.
Where can I find Terrace Ii Mhc's water quality report?
As a community water system, Terrace Ii Mhc must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Natrona County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Casper, City of | Natrona | 59,000 | Community | Purchased surface water |
| Mills, City of | Natrona | 4,050 | Community | Groundwater under influence of surface water |
| Bar Nunn, Town of | Natrona | 4,000 | Community | Purchased surface water |
| Evansville, Town of | Natrona | 2,873 | Community | Surface water |
| Vista West Water Company | Natrona | 1,600 | Community | Purchased surface water |
| Pioneer Water & Sewer District | Natrona | 1,500 | Community | Purchased surface water |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Terrace Ii Mhc, PWSID WY5601622, Wyoming”, https://aquacensus.com/water-systems/wyoming/terrace-ii-mhc-wy5601622 (data as of October 1, 2026).