Twin Valley Inc.

ZipCheckup's reading of EPA SDWIS for Twin Valley Inc. (CA4300575): 21 past health-based violations, since resolved. Twin Valley Inc. carries 21 resolved violations in the five-year EPA record - each has been formally closed, and the supplier, which serves approximately 317 people, now meets all applicable federal drinking water standards with no open enforcement activity remaining.

Data: EPA SDWIS

System Overview

Twin Valley Inc. (EPA ID: CA4300575) is a community water system in California that serves approximately 317 people from groundwater sources.

This system serves ZIP code 95020 in Gilroy.

Violation History

Status breakdown for accepted records with record years 2021-2026: 0 resolved, 21 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.

Recent Violations

Contaminants Detected

The following contaminants have been flagged in EPA records for this water system:

Health Risk Details

Lead (EPA limit: 0.015 mg/L (action level))

Brain damage in children, kidney & blood pressure in adults At-risk groups: infants, children under 6, pregnant women.

Removal methods: reverse osmosis, distillation, certified carbon block filter (NSF/ANSI 53). Find the right filter →

Lead & Copper

EPA Lead and Copper Rule evidence attributed directly to this water system:

No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.

ZIP Codes Served

Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by CA or modeled from parcel and building-footprint data.

• 95020 - Gilroy

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Twin Valley Inc. (CA4300575) on EPA.gov.

Frequently Asked Questions

Is Twin Valley Inc. water safe to drink?

The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Twin Valley Inc.; its 21 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.

How many people does Twin Valley Inc. serve?

Twin Valley Inc. serves approximately 317 people across 1 ZIP code in California.

Where does Twin Valley Inc. get its water?

The primary water source is groundwater.

@misc{zipcheckup-water-system-ca4300575,
  author = {{ZipCheckup}},
  title  = {{Twin Valley Inc. (CA): 21 Health Violations}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/ca4300575/}
}