# Brawley, City of — Brawley, Ca, CA — Drinking Water Quality (2023)

> Contaminant levels for the Brawley, City of — Brawley, Ca, CA public water system from its 2023 Consumer Confidence Report, compared to federal limits.

- Page: https://www.thewatermap.com/water/ca/brawley-brawley-ca/2023
- JSON API: https://www.thewatermap.com/api/water/ca/brawley-brawley-ca/2023
- 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: 2023
- Contaminants measured: 19
- Contaminants with a federal limit: 2
- 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 |
|---|---|---|---|---|---|
| Chlorine | Disinfectants | 1.17–1.25 mg/L (Range) | Treatment plant | No federal limit | Within the limit |
| HAA5 | Disinfection byproducts | 0–23.3 ug/L (Range) | Treatment plant | No federal limit | Within the limit |
| TTHM | Disinfection byproducts | 32.4–42.3 ug/L (Range) | Treatment plant | No federal limit | Within the limit |
| Fluoride | Inorganic chemicals | 0.33 mg/L (Reported level) | Source water | 4 mg/L (MCL) | Within the limit |
| Aluminum | Metals | 0.095–0.33 mg/L (Range) | Source water | No federal limit | Detected — no federal limit |
| Arsenic | Metals | 3 ug/L (Reported level) | Source water | No federal limit | Within the limit |
| Barium | Metals | 0.15 mg/L (Reported level) | Source water | 2 mg/L (MCL) | Within the limit |
| Boron | Metals | 180 mg/L (Reported level) | Source water | No federal limit | Detected — no federal limit |
| Calcium | Metals | 87 mg/L (Reported level) | Source water | No federal limit | Detected — no federal limit |
| Potassium | Metals | 5.3 mg/L (Reported level) | Source water | No federal limit | Detected — no federal limit |
| Sodium | Metals | 110 mg/L (Reported level) | Source water | No federal limit | Detected — no federal limit |
| Vanadium | Metals | 0.0039 mg/L (Reported level) | Source water | No federal limit | Detected — no federal limit |
| Escherichia coli (E. coli) | Microbial | 0 (Reported level) | Treatment plant | No federal limit | None detected |
| Total Coliform | Microbial | 0 (Reported level) | Treatment plant | No federal limit | None detected |
| Alkalinity | Physical & aggregate | 140 mg/L (Reported level) | Source water | No federal limit | Detected — no federal limit |
| Bicarbonate | Physical & aggregate | 170 mg/L (Reported level) | Source water | No federal limit | Detected — no federal limit |
| Hardness | Physical & aggregate | 330 mg/L (Reported level) | Source water | No federal limit | Detected — no federal limit |
| pH | Physical & aggregate | 7.9 (Reported level) | Source water | No federal limit | Detected — no federal limit |
| Turbidity | Physical & aggregate | 100 (Reported level) | Treatment plant | No federal limit | Detected — no federal limit |

## What these contaminants are

- **Chlorine** — A disinfectant added to drinking water to kill bacteria and viruses. Effective and necessary, but high residual levels can cause taste and odor issues; the EPA caps the residual disinfectant level.
- **HAA5** — Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. Long-term exposure above the federal limit is associated with an increased cancer risk.
- **TTHM** — Total trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. Long-term exposure above the federal limit is linked to liver, kidney, and central-nervous-system effects and increased cancer risk.
- **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.
- **Aluminum** — A common element sometimes used as a treatment coagulant. Regulated only as a secondary (cosmetic) standard; high levels can discolor water.
- **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.
- **Barium** — A metal from erosion of natural deposits and industrial discharge. Long-term exposure above the federal limit can raise blood pressure.
- **Boron** — A naturally occurring element from rock and soil. No enforceable federal limit; the EPA has issued a health advisory level.
- **Calcium** — 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.
- **Sodium** — A naturally occurring salt component. Not federally regulated for health; relevant for people on sodium-restricted diets.
- **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.
- **Total Coliform** — A group of bacteria used as an indicator of overall water-system sanitation. Coliforms themselves are usually harmless, but their presence signals that disease-causing organisms could enter the system.
- **Alkalinity** — A measure of the water's capacity to neutralize acids. Not federally regulated for health; relevant to corrosion control and treatment.
- **Hardness** — A measure of dissolved calcium and magnesium minerals. Not federally regulated for health; affects scaling, soap use, and taste.
- **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.
- **Turbidity** — A measure of cloudiness from suspended particles in the water. High turbidity can shelter microbes from disinfection; the EPA enforces it through a treatment-technique standard.

## 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._