MyTapWater.us

PWSID CA5301002

LEWISTON COMMUNITY SERVICES DISTRICT

Community water system based in Junction City, CA

Service area on file with EPA: Trinity County. EPA's recorded service area can be incomplete for regional authorities. The cities and counties above are what the utility has filed with EPA; the utility may serve additional areas.

Population served
677
Source
Surface water
Status
Active

At a glance

1 issue above the federal safety limit

Past 5 years: 2 health-based violations on file, all marked Resolved or Archived. See compliance history below.

No recent lead, copper, or PFAS test data on file from this system. Most other contaminants are tracked through violation reports rather than per-page test tables.

Risk classification follows EPA's published values for safe drinking water, with caution and concern bands reviewed by a clinician. Past resolved violations do not influence this card. See methodology.

Lead service line inventory

Lead or galvanized-requiring-replacement service lines confirmed in this system

LEWISTON COMMUNITY SERVICES DISTRICT reports 0 confirmed lead service lines, 6 galvanized requiring replacement, 230 non-lead, 0 unknown (total 236) in the EPA SDWIS service line inventory (2026Q1).

  • 0 confirmed lead service lines
  • 6 galvanized requiring replacement (LCRI treats these as lead)
  • 0 unknown (0.0% of total)
  • 230 confirmed non-lead (97.5%)
  • 236 total service lines in the system

Why this is a health concern. A galvanized iron service line that was ever installed downstream of a historic lead component (a lead service line, a lead gooseneck connector, or lead solder) absorbed lead into its corrosion layer over decades. The pipe continues to release that accumulated lead into water for years after the upstream lead source is removed. That is why EPA's LCRI treats GRR lines as lead and requires their replacement on the same 10-year schedule as confirmed lead lines. Read our plain-English lead guide.

What to do if your service line might be lead
  1. Ask your utility to check the service-line classification for your specific address. Many utilities provide a public address-lookup tool linked from the inventory page.
  2. Get on the replacement queue. Under the LCRI, utilities must replace all lead and galvanized-requiring- replacement lines within 10 years (clock generally starts November 2027). Some prioritize requests.
  3. Until the line is replaced: flush the tap 30 seconds after long stagnation, use cold water for drinking and cooking, and consider an NSF/ANSI 53 lead-rated tap filter.
  4. Talk to your clinician about a blood lead test for anyone in the home, especially a pregnant person or a child under 6. Lead in drinking water guide.

Inventory data sourced from LEWISTON COMMUNITY SERVICES DISTRICT ( retrieved May 24, 2026 ; curator confidence: high ). Confirmed against the original source automatically each month; see methodology.

Lead and copper test results

The most recent measurement per contaminant from EPA's Lead and Copper Rule sampling.

Why only lead and copper, and not arsenic, nitrate, or others?

EPA's bulk SDWIS download is the only nationwide per-system sample data they publish, and it only includes the Lead and Copper Rule table. Values for other regulated contaminants (TTHMs, nitrate, arsenic, etc.) appear on this page only when they trigger a violation. For the full per-system contaminant suite, see the utility's annual Consumer Confidence Report (link further down the page).

No recent Lead and Copper sample data

EPA's national SDWIS bulk dataset does not include Lead and Copper Rule sampling rows for this system in the most recent release. That can mean the system is small enough to be on a reduced sampling schedule, or that recent samples have not yet been submitted to EPA. Check the system's annual Consumer Confidence Report (see below) for the most recent local measurements.

Data from EPA SDWIS (Lead and Copper Rule sample table) , last refreshed May 24, 2026.

Fluoride

Per CDC My Water's Fluoride

LEWISTON COMMUNITY SERVICES DISTRICT does not add fluoride to its drinking water.

This system has not reported adding fluoride to its water on CDC's My Water's Fluoride listing. Natural fluoride may still be present at trace levels from the source water; the utility's annual water quality report has the latest measured concentration.

Source: CDC My Water's Fluoride, listed under Lewiston Valley Water Co., Inc. (Trinity County). Verify on CDC's site .

Area context

Trinity County, CA (2020 data)

Community water systems
0 of 17 add fluoride
Population on fluoridated water
0 of 8,486 (0.0%)

California statewide (2020 data)

Population on fluoridated water
21,879,582 of 38,051,212 (57.5%)
Community water systems adding fluoride
417 of 3,057

Data from CDC My Water's Fluoride (per-system status) , last refreshed May 19, 2026.

Data from CDC Water Fluoridation Reporting System (state and county aggregates) , last refreshed May 16, 2026.

Compliance history

EPA-recorded violations against this system over the last 5 years.

How to read this section

Health-based violations are when a measured limit was exceeded; the measured concentration is shown alongside the EPA federal limit where SDWIS published it. Monitoring and reporting items are paperwork issues (missed sample dates, late filings) that do not themselves indicate unsafe water.

2 resolved health-based violations in the last 5 years

All 2 health-based violations in the last 5 years are marked Resolved or Archived. Past violations do not represent current water quality.

Health-based violations in the last 5 years
Period start Contaminant What happened Measured level Status
March 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
March 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
4 older violation s (5-10 years ago) · all paperwork (monitoring/reporting), none health-based , all resolved
Violations 5-10 years ago (4 total)
Period start Relates to Item Measured level Status
November 1, 2020 Surface Water Treatment Rule Monitoring of Treatment (SWTR-Filter) — Resolved
November 1, 2020 Surface Water Treatment Rule Monitoring of Treatment (SWTR-Filter) — Resolved
November 1, 2020 Revised Total Coliform Rule Recordkeeping Violations (RTCR) — Resolved
November 1, 2020 Revised Total Coliform Rule Recordkeeping Violations (RTCR) — Resolved

Data from EPA SDWIS (violation records) , last refreshed May 24, 2026.

Where to see every contaminant this utility tested for

EPA's bulk SDWIS dataset gives MyTapWater.us per-system measured values for lead and copper, plus violation records for everything else. To see every regulated contaminant this utility tested for in the past year (TTHMs, HAA5, nitrate, arsenic, fluoride, chromium, etc.) with measured values, read the utility's Consumer Confidence Report (CCR).

Every community water system is required by EPA to publish a CCR annually, by July 1, listing every contaminant they sampled, the measured value, the federal limit, and any health-based exceedances. Most utilities post the report online; some mail it with your bill.

How to find LEWISTON COMMUNITY SERVICES DISTRICT's CCR:

Other water systems in Trinity County, CA

Compare nearby utilities by population served.

Contact this utility

Public administrative contact information for this water system, as filed with the EPA. Use this to ask about your service line, request your home's lead status, or report a water quality issue.

Administrator
PELTON, DOROTHY
Phone
530-778-0306
Email
lewistoncsdap@gmail.com
Mailing address
PO box 55
JUNCTION CITY, CA 96048

Where this page's data comes from

Bundle released 2026-Q2, regenerated May 24, 2026. Each section above also shows its own source date so you can tell at a glance how fresh that part of the page is.

Every value on this page is cross-verified before publication; read our methodology for the verification steps and corrections process.