Trinity County, California — public water systems

43 active public water systems serve Trinity County, reporting 14.7K people served.

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

Active systems

Population served

14.7K

Community systems

Groundwater share

65.1%

Water systems in Trinity County

Active public water systems in Trinity County, California
#	Water system	County	Population served	Type	Source
1	Weaverville C.S.D.	Trinity	3,975	Community	Surface water
2	Trinity Co. W.W. Dist #1	Trinity	2,324	Community	Surface water
3	Trinity Center M.W.C.	Trinity	729	Community	Surface water
4	Lewiston Community Services District	Trinity	677	Community	Surface water
5	Clark System	Trinity	450	Transient non-community	Groundwater
6	Hayward Flat Campground	Trinity	440	Transient non-community	Groundwater
7	Tannery Gulch Campground	Trinity	410	Transient non-community	Groundwater
8	Caltrans-Salyer Safety Rest Stop	Trinity	400	Transient non-community	Groundwater
9	Trinity Knolls Mutual Water Company	Trinity	338	Community	Groundwater
10	Trinity Village Mutual Water	Trinity	332	Community	Surface water
11	Fawn & Stoney Campground	Trinity	327	Transient non-community	Groundwater
12	Trinity Lake Marinas, LLC.	Trinity	317	Transient non-community	Groundwater
13	Trinity Alps Resort	Trinity	307	Transient non-community	Surface water
14	Fish Tail Inn	Trinity	274	Transient non-community	Surface water
15	Ruth Lake Recreation Area	Trinity	252	Transient non-community	Groundwater
16	Salyer Mutual Wc (Formerly Riverview Ac)	Trinity	231	Community	Surface water
17	Pinewood Cove Resort	Trinity	230	Transient non-community	Groundwater
18	Alpine View Campground	Trinity	215	Transient non-community	Groundwater
19	Ruth Lake Marina	Trinity	202	Transient non-community	Groundwater
20	Bridge Camp	Trinity	190	Transient non-community	Groundwater
21	Del Loma Rv Park & Cg	Trinity	157	Transient non-community	Groundwater
22	Bar 717 Ranch	Trinity	145	Transient non-community	Surface water
23	Treasure Creek Woods Mwc	Trinity	131	Community	Groundwater
24	Salyer Heights W.S., Inc.	Trinity	130	Community	Surface water
25	Burnt Ranch School	Trinity	125	Non-transient non-community	Groundwater
26	Cal Fire-Trinity River Conservation Camp	Trinity	120	Non-transient non-community	Groundwater
27	Burnt Ranch Estates	Trinity	115	Community	Surface water
28	Journey S End Resort	Trinity	106	Transient non-community	Groundwater
29	Rush Creek Mutual Water System	Trinity	102	Community	Surface water
30	So Trinity Unified School Dist.	Trinity	100	Non-transient non-community	Groundwater
31	Ackerman Campground	Trinity	100	Transient non-community	Groundwater
32	Covington Mill Mwc-Division B	Trinity	99	Community	Groundwater
33	Mary Smith Campground	Trinity	90	Transient non-community	Groundwater
34	Junction City School	Trinity	80	Non-transient non-community	Surface water
35	Lakeview Terrace Resort	Trinity	79	Transient non-community	Groundwater under influence of surface water
36	Redding Odd Fellows Camp	Trinity	65	Transient non-community	Groundwater
37	Mad River Compound - Usfs	Trinity	61	Non-transient non-community	Groundwater
38	Covington Mill - A	Trinity	60	Community	Groundwater
39	Indian Creek Trailer Park	Trinity	43	Community	Surface water
40	Bucktail Mutual Water Company	Trinity	42	Community	Groundwater
41	Seymour'S Mutual Water System	Trinity	40	Community	Groundwater
42	Bud Fine Mwc	Trinity	37	Transient non-community	Surface water
43	Flux River Resort	Trinity	34	Transient non-community	Groundwater