# Eastside Water Association — Midway City, Ca, CA — Drinking Water Quality (2022)

> Contaminant levels for the Eastside Water Association — Midway City, Ca, CA public water system from its 2022 Consumer Confidence Report, compared to federal limits.

- Page: https://www.thewatermap.com/water/ca/eastside-water-association-midway-city-ca/2022
- JSON API: https://www.thewatermap.com/api/water/ca/eastside-water-association-midway-city-ca/2022
- Source: the utility's annual Consumer Confidence Report (CCR)
- Verification: transcribed by a model, cross-checked by a second model, approved before publishing
- Reporting year: 2022
- Contaminants measured: 13
- Contaminants with a federal limit: 3
- Contaminants at or above the federal limit: 0
- Part of The Water Map — https://www.thewatermap.com

## Contaminants measured

| Contaminant | Category | Measured level | Sampling context | Federal limit | Status |
|---|---|---|---|---|---|
| Fluoride | Inorganic chemicals | 0.5 mg/L (Range) | System-wide | 4 mg/L (MCL) | Within the limit |
| Arsenic | Metals | 2.8–8.4 ug/L (Range) | System-wide | No federal limit | Approaching the limit |
| Calcium | Metals | 52–57.5 mg/L (Range) | System-wide | No federal limit | Detected — no federal limit |
| Chromium, Hexavalent | Metals | 0.99 ug/L (Reported level) | System-wide | No federal limit | Detected — no federal limit |
| Copper | Metals | 0.13 mg/L (90th percentile) | At the tap | 1.3 mg/L (Action level) | Within the limit |
| Lead | Metals | Not detected ug/L (90th percentile) | At the tap | No federal limit | Within the limit |
| Magnesium | Metals | 5.6–9.1 mg/L (Range) | System-wide | No federal limit | Detected — no federal limit |
| Potassium | Metals | 2.1–2.8 mg/L (Range) | System-wide | No federal limit | Detected — no federal limit |
| Escherichia coli (E. coli) | Microbial | 0 (Reported level) | Total No. of Detections | No federal limit | None detected |
| Alkalinity | Physical & aggregate | 171–176 mg/L (Range) | System-wide | No federal limit | Detected — no federal limit |
| Bicarbonate | Physical & aggregate | 208.4–215 mg/L (Range) | System-wide | No federal limit | Detected — no federal limit |
| pH | Physical & aggregate | 8 (Range) | System-wide | No federal limit | Detected — no federal limit |
| Uranium | Radionuclides | 2.38 pCi/L (Reported level) | System-wide | 20 pCi/L (MCL) | Detected — no federal limit |

## What these contaminants are

- **Fluoride** — A mineral often added to drinking water to help prevent tooth decay. Beneficial at low levels, but long-term exposure above the federal limit can cause bone disease and tooth mottling.
- **Arsenic** — A naturally occurring element that also enters water from industry and agriculture. A known human carcinogen; long-term exposure is linked to skin, bladder, and lung cancer.
- **Calcium** — A naturally occurring mineral that contributes to water hardness. Not federally regulated for health; affects scaling and taste.
- **Chromium, Hexavalent** — Hexavalent chromium ('chromium-6') — the more toxic form of chromium. A known carcinogen by inhalation; regulated nationally only within the total-chromium limit, with stricter limits in some states.
- **Copper** — A metal that enters water from corroding household plumbing. Short-term exposure causes stomach distress; long-term exposure can damage the liver and kidneys.
- **Lead** — A toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. There is no safe level of lead; it harms brain development in children and raises blood pressure in adults. The EPA sets an action level, not a health goal above zero.
- **Magnesium** — A naturally occurring mineral that contributes to water hardness. Not federally regulated for health; affects scaling and taste.
- **Potassium** — A naturally occurring mineral from rock and soil. Not federally regulated for health.
- **Escherichia coli (E. coli)** — Escherichia coli — bacteria found in the gut of humans and animals. Its presence in drinking water indicates fecal contamination and a real risk of waterborne illness.
- **Alkalinity** — A measure of the water's capacity to neutralize acids. Not federally regulated for health; relevant to corrosion control and treatment.
- **pH** — A measure of how acidic or basic the water is. Regulated only as a secondary standard; very low or high pH can corrode pipes or affect taste.
- **Uranium** — A naturally occurring radioactive metal from erosion of natural deposits. Long-term exposure above the federal limit can damage the kidneys and increase cancer risk.

## How to read this

- A water-quality report covers an entire service area, not a single address.
- 'Federal limit' is the EPA standard (MCL, action level, treatment technique, etc.) that the measured level is compared against.
- 'At or above the federal limit' means the utility's own reported figure met or exceeded that standard.

_Figures are the utility's own published numbers. Generated 2026-06-04 from thewatermap.com._