Delta County, Colorado — public water systems

At a glance

42 active public water systems are filed under Delta County, Colorado in EPA's SDWIS records, together reporting 27,718 people served. The largest is City of Delta, which reports serving 8,700 people. 30 are community water systems serving people where they live; the other 12 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

Population served

27.7K

Community systems

Groundwater share

66.7%

How does Delta County compare with other Colorado counties?

Delta County has the 19th-most active public water systems among the 113 counties listed for active Colorado systems in EPA records; among the 65 with 3 or more systems, the median has 18. Its systems report 27,718 people served in total, the 25th-largest county figure in the state and 0.4% of the statewide total. The average system here reports serving 660 people, well below the Colorado average of 3,400. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Delta County's drinking water come from?

By primary water source, Delta County's active systems draw on groundwater (17, 40%), purchased surface water (11, 26%), groundwater under influence of surface water (8, 19%) and surface water (3, 7.1%). Overall, 67% rely mainly on groundwater (including purchased groundwater) and 33% on surface water, compared with 74% and 26% across Colorado. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, City of Delta, draws primarily on purchased surface water.

What kinds of water systems operate in Delta County?

Delta County's active systems break down as 30 community systems (71%) and 12 transient non-community systems (29%). 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. 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. EPA lists their owner types as private (71%), local government (24%) and federal government (4.8%).

Water systems in Delta County

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Active public water systems in Delta County, Colorado
#	Water system	County	Population served	Type	Source
1	Delta City of	Delta	8,700	Community	Purchased surface water
2	Orchard City Town of	Delta	3,100	Community	Groundwater under influence of surface water
3	Upper Surface Creek Domestic Wua	Delta	2,800	Community	Surface water
4	Paonia Town of	Delta	2,499	Community	Groundwater under influence of surface water
5	Cedaredge Town of	Delta	2,400	Community	Surface water
6	Hotchkiss Town of	Delta	2,050	Community	Surface water
7	Rogers Mesa Wc	Delta	840	Community	Purchased surface water
8	Crawford Mesa Wa	Delta	486	Community	Groundwater
9	Crawford Town of	Delta	477	Community	Groundwater
10	Grand Mesa Visitor Center	Delta	406	Transient non-community	Groundwater
11	Bone Mesa Domestic Wd	Delta	400	Community	Groundwater under influence of surface water
12	Camp Cedaredge	Delta	367	Transient non-community	Groundwater
13	Pitkin Mesa Pipeline Co	Delta	295	Community	Groundwater under influence of surface water
14	Stewart Mesa Wc	Delta	250	Community	Purchased groundwater under influence
15	Hanson Mesa Domestic Pipeline Co Inc.	Delta	250	Community	Purchased surface water
16	Deutsch Domestic Water	Delta	246	Community	Groundwater
17	Coalby Domestic Wc	Delta	239	Community	Groundwater under influence of surface water
18	Cathedral Wc	Delta	200	Community	Groundwater under influence of surface water
19	Lazear Domestic Wc	Delta	178	Community	Groundwater
20	Grand Mesa Christian Assn Camp	Delta	161	Transient non-community	Groundwater
21	Hidden Valley Hoa Water Company	Delta	120	Community	Purchased surface water
22	Wide Acres MHP	Delta	96	Community	Purchased surface water
23	Cherry Acres MHP	Delta	95	Community	Purchased groundwater under influence
24	Island Lake Cg	Delta	83	Transient non-community	Groundwater
25	Big B'S Delicious Orchards	Delta	77	Transient non-community	Groundwater
26	Sunshine Mesa Domestic Wc	Delta	76	Community	Groundwater
27	Minnesota Pipeline	Delta	72	Community	Purchased surface water
28	Hammond Pipeline	Delta	70	Community	Purchased groundwater under influence
29	Redwood Arms Motel	Delta	66	Transient non-community	Groundwater
30	Ginters Grove Domestic Water Corp	Delta	62	Community	Purchased surface water
31	Grand Mesa Lodge	Delta	62	Transient non-community	Groundwater
32	Mad Dog Wc	Delta	60	Community	Groundwater under influence of surface water
33	Alexander Lake Lodge	Delta	58	Transient non-community	Groundwater
34	West Paonia Domestic Water Company	Delta	57	Community	Purchased surface water
35	Gunnison River Pleasure Park	Delta	49	Transient non-community	Groundwater
36	South Lamborn Mesa Water Company	Delta	47	Community	Purchased surface water
37	Mountain Top Resort Campground	Delta	40	Transient non-community	Groundwater
38	Mountain Valley Meadows Rv Park	Delta	39	Transient non-community	Groundwater
39	Western Extension Domestic Water Company	Delta	37	Community	Purchased surface water
40	Riverwood Mobile Home Park	Delta	37	Community	Purchased surface water
41	Stucker Mesa Domestic Wc	Delta	36	Community	Groundwater under influence of surface water
42	Root and Vine Market	Delta	35	Transient non-community	Groundwater

Delta County water systems: frequently asked questions

How many public water systems are in Delta County, Colorado?

EPA's SDWIS records file 42 active public water systems under Delta County, Colorado: 30 community systems (71%) and 12 transient non-community systems (29%).

Who supplies drinking water in Delta County, CO?

The largest community water systems filed under Delta County are City of Delta (8,700 people served), Town of Orchard City (3,100 people served) and Upper Surface Creek Domestic Wua (2,800 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does Delta County's drinking water come from groundwater or surface water?

Of the 42 active public water systems in Delta County, 67% draw mainly on groundwater and 33% on surface water, counting purchased supplies. The largest system, City of Delta, uses purchased surface water.

Where can I find a water quality report for Delta County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 30 community systems are filed under Delta County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in Delta County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More Colorado water systems

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, “Public water systems in Delta County, Colorado”, https://aquacensus.com/water-systems/colorado/delta (data as of October 1, 2026).