# Loma Linda University — Loma Linda, Ca, CA — Drinking Water Quality (2023)

> Contaminant levels for the Loma Linda University — Loma Linda, Ca, CA public water system from its 2023 Consumer Confidence Report, compared to federal limits.

- Page: https://www.thewatermap.com/water/ca/loma-linda-university-loma-linda-ca/2023
- JSON API: https://www.thewatermap.com/api/water/ca/loma-linda-university-loma-linda-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: 21
- Contaminants with a federal limit: 7
- 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 |
|---|---|---|---|---|---|
| HAA5 | Disinfection byproducts | Not detected ug/L (Average) | Llu | 60 ug/L (MCL) | None detected |
| Perchlorate | Disinfection byproducts | 2.6 ug/L (Average) | Llu | No federal limit | Detected — no federal limit |
| TTHM | Disinfection byproducts | 1.77 ug/L (Average) | Llu | 80 ug/L (MCL) | Within the limit |
| Fluoride | Inorganic chemicals | 0.87 mg/L (Average) | Llu | 4 mg/L (MCL) | Within the limit |
| Nitrate | Inorganic chemicals | 4.78 mg/L (Average) | Llu | 10 mg/L (MCL) | Within the limit |
| Boron | Metals | 0.125 mg/L (Average) | Llu | No federal limit | Detected — no federal limit |
| Calcium | Metals | 41 mg/L (Average) | Llu | No federal limit | Detected — no federal limit |
| Copper | Metals | 0.23 mg/L (90th percentile) | At the tap | No federal limit | Within the limit |
| Lead | Metals | Not detected ug/L (90th percentile) | At the tap | No federal limit | Within the limit |
| Magnesium | Metals | 6.8 mg/L (Average) | Llu | No federal limit | Detected — no federal limit |
| Potassium | Metals | 1.9 mg/L (Average) | Llu | No federal limit | Detected — no federal limit |
| Vanadium | Metals | 9.25 ug/L (Average) | Llu | No federal limit | Detected — no federal limit |
| Chromium | Other | 2.85 ug/L (Average) | Llu | No federal limit | Within the limit |
| Perfluorohexanesulfonic acid | PFAS ("forever chemicals") | 0.5 ng/L (Average) | Llu | No federal limit | Within the limit |
| PFOS | PFAS ("forever chemicals") | 0.7 ng/L (Average) | Llu | No federal limit | Within the limit |
| Alkalinity | Physical & aggregate | 170 mg/L (Average) | Llu | No federal limit | Detected — no federal limit |
| Bicarbonate | Physical & aggregate | 205 mg/L (Average) | Llu | No federal limit | Detected — no federal limit |
| pH | Physical & aggregate | 8.1 (Average) | Llu | No federal limit | Detected — no federal limit |
| Combined Radium | Radionuclides | 0.52 pCi/L (Average) | Llu | 5 pCi/L (MCL) | Within the limit |
| Gross Alpha | Radionuclides | 1.9 pCi/L (Average) | Llu | 15 pCi/L (MCL) | Within the limit |
| Uranium | Radionuclides | 1.8 pCi/L (Average) | Llu | 20 pCi/L (MCL) | Detected — no federal limit |

## What these contaminants are

- **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.
- **Perchlorate** — A chemical used in rocket fuel and fireworks that can also form during disinfection. Can interfere with thyroid hormone production; has no national enforceable limit but is regulated in some states.
- **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.
- **Nitrate** — A compound from fertilizer runoff, septic systems, and erosion of natural deposits. Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.
- **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.
- **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.
- **Perfluorohexanesulfonic acid** — Perfluorohexanesulfonic acid, a PFAS 'forever chemical.' Regulated by the EPA at 10 parts per trillion and included in the PFAS Hazard Index.
- **PFOS** — Perfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. Linked to cancer, thyroid disease, and immune effects; the EPA set an enforceable limit of 4 parts per trillion.
- **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.
- **Combined Radium** — Combined radium-226 and radium-228 — naturally occurring radioactive elements. Long-term exposure above the federal limit increases the risk of bone cancer.
- **Gross Alpha** — Gross alpha particle activity — a combined measure of alpha-emitting radioactive substances. Long-term exposure above the federal limit increases cancer risk.
- **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._