Public water system · WA53AD282
ActiveEdwin Markham
At a glance
Edwin Markham (PWSID WA53AD282) is an active non-transient non-community water system in Franklin County, Washington. It reports serving 216 people through 4 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
216
Service connections
4
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Edwin Markham compare with other water systems in Franklin County?
By EPA's size categories, Edwin Markham is a very small system (500 people or fewer). Franklin County has 80 active public water systems. Its population served is well below the county average of 1,644 people per system, and accounts for 0.2% of the 131,535 people reported by systems filed under the county. Across Washington, the 4,705 active systems average 2,172 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Edwin Markham is about half of that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Washington has 400 active non-transient non-community water systems, 8.5% of the state's 4,705 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 4,370 Washington systems (93%) list groundwater as their primary source.
Who owns and regulates Edwin Markham?
EPA lists Edwin Markham as owned by a local government. The WA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 7 of the 80 active systems in Franklin County (8.8%) are also owned by a local government.
Does Edwin Markham have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2022. The violations listed here began between July 2022 and July 2022. By type: 12 monitoring and reporting. The contaminants or rules involved are Carbon tetrachloride, Dichloromethane, 1,2-Dichloroethane and 1,1,1-Trichloroethane. EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | No | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Vinyl chloridecode 2976 | No | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Edwin Markham: frequently asked questions
Who runs Edwin Markham?
Edwin Markham (PWSID WA53AD282) is a non-transient non-community water system owned by a local government. It is regulated by the WA state drinking water program.
How many people does Edwin Markham serve?
Edwin Markham reports serving 216 people through 4 service connections in Franklin County, Washington.
Where does Edwin Markham get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Edwin Markham have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2022. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Edwin Markham'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2022. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Edwin Markham's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Edwin Markham is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Franklin County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Pasco Water Department | Franklin | 115,102 | Community | Surface water |
| Connell City of | Franklin | 5,150 | Community | Groundwater |
| Basin City Water Sewer District | Franklin | 1,740 | Community | Groundwater |
| Lamb-Weston Pasco | Franklin | 620 | Non-transient non-community | Groundwater |
| Pasco Port of 210 | Franklin | 500 | Non-transient non-community | Purchased surface water |
| Mesa Water Department | Franklin | 495 | Community | Groundwater |
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, “Edwin Markham, PWSID WA53AD282, Washington”, https://aquacensus.com/water-systems/washington/edwin-markham-wa53ad282 (data as of October 1, 2026).