Public water system · IA2817710
ActiveRocky Nook Association, Inc..
At a glance
Rocky Nook Association, Inc.. (PWSID IA2817710) is an active transient non-community water system in Delaware County, Iowa. It reports serving 50 people through 46 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in March 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
50
Service connections
46
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Rocky Nook Association, Inc.. compare with other water systems in Delaware County?
By EPA's size categories, Rocky Nook Association, Inc.. is a very small system (500 people or fewer). Delaware County has 28 active public water systems. Its population served is well below the county average of 336 people per system, and accounts for 0.5% of the 9,400 people reported by systems filed under the county. Across Iowa, the 1,828 active systems average 1,718 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Rocky Nook Association, Inc.. is about 65% below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Iowa has 626 active transient non-community water systems, 34% of the state's 1,828 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,502 Iowa systems (82%) list groundwater as their primary source.
Who owns and regulates Rocky Nook Association, Inc..?
EPA lists Rocky Nook Association, Inc.. as privately owned. The IA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 16 of the 28 active systems in Delaware County (57%) are also privately owned.
Does Rocky Nook Association, Inc.. have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in March 2018. The violations listed here began between July 2013 and March 2018. By type: 6 monitoring and reporting, 5 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Public Notice (5 of them). 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 |
|---|---|---|---|---|
| 2018-03-01 | Required treatment not metTreatment Technique Startup Procedures (RTCR) · code 2D | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2016-08-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2016-04-24 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2016-04-24 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2016-04-23 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2016-04-23 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2015-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2015-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2014-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | 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.
Rocky Nook Association, Inc..: frequently asked questions
Who runs Rocky Nook Association, Inc..?
Rocky Nook Association, Inc.. (PWSID IA2817710) is a transient non-community water system privately owned. It is regulated by the IA state drinking water program.
How many people does Rocky Nook Association, Inc.. serve?
Rocky Nook Association, Inc.. reports serving 50 people through 46 service connections in Delaware County, Iowa.
Where does Rocky Nook Association, Inc.. 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 Rocky Nook Association, Inc.. have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in March 2018. 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 Rocky Nook Association, Inc..'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, one is health-based, and the most recent began in March 2018. For current results, consult EPA ECHO, or the IA state drinking water program.
Where can I find Rocky Nook Association, Inc..'s water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Rocky Nook Association, Inc.. is a 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 Delaware County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Manchester Water Supply | Delaware | 5,077 | Community | Groundwater |
| Earlville Muni Water Supply | Delaware | 724 | Community | Groundwater |
| Hopkinton Municipal Utilities | Delaware | 622 | Community | Groundwater |
| Backbone State Park | Delaware | 508 | Transient non-community | Groundwater |
| Delhi Water Supply | Delaware | 420 | Community | Groundwater |
| Colesburg Water Supply | Delaware | 386 | Community | Groundwater |
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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, “Rocky Nook Association, Inc.., PWSID IA2817710, Iowa”, https://aquacensus.com/water-systems/iowa/rocky-nook-association-inc-ia2817710 (data as of October 1, 2026).