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Is One Arrow First Nation Water Safe to Drink?
SaskWater Wakaw-Humboldt Regional Water Supply System · 2025 data · official source
This is the safety page for One Arrow First Nation — how hard the water is (and what that costs) lives on the One Arrow First Nation water hardness page · see how One Arrow First Nation compares across all of Saskatchewan on the Saskatchewan hardness guide · or browse every Saskatchewan city by safety status on the Saskatchewan water quality page.
One Arrow First Nation water meets all Health Canada legal limits. Each of the 22 tested contaminants below sits under its limit — most by a wide margin.
The one real caveat: lead and copper usually enter from a home's own plumbing, not the treated supply. If your home was built before the mid-1950s, older service lines and solder are the thing to check — not the water coming out of the treatment plant.
Why it's safe
- ✓ Continuous monitoring — SaskWater Wakaw-Humboldt Regional Water Supply System tests the water around the clock for microbiological safety and routinely for chemical parameters.
- ✓ Regulated to Health Canada limits — enforced under Health Canada (GCDWQ MAC) / Saskatchewan Drinking Water Quality Standards.
- ✓ Disinfected — chlorine or chloramine keeps the supply safe from bacteria from the treatment plant to your tap.
What's in One Arrow First Nation's water
Detected contaminants reported for SaskWater Wakaw-Humboldt Regional Water Supply System.
Source: SaskWater Wakaw-Humboldt Regional Water Supply System.
Every detected contaminant is below the health limit. Levels shown are typical (median) readings from municipal test results; occasional individual samples can run higher.
How to read this table: the legal limit (Health Canada's Maximum Acceptable Concentration (MAC)) is the enforceable safety line — it's what regulators actually require. A contaminant above its aesthetic guideline (like iron or sodium) affects taste or staining — not your health.
| Contaminant | Typical level | Health Canada limit | Status |
|---|---|---|---|
| Aluminum | 0.026 mg/L | no guideline | No guideline |
| Antimony | 0.0002 mg/L | 0.006 mg/L | Below limit |
| Arsenic | 0.0002 mg/L | 0.01 mg/L | Below limit |
| Barium | 0.078 mg/L | 1 mg/L | Below limit |
| Boron | 0.03 mg/L | 5 mg/L | Below limit |
| Cadmium | 0 mg/L | 0.005 mg/L | Below limit |
| Chromium | 0.0005 mg/L | 0.05 mg/L | Below limit |
| Copper | 1 mg/L | no guideline | No guideline |
| Iron | 0.3 mg/L | no guideline | No guideline |
| Lead | 0.0003 mg/L | 0.01 mg/L | Below limit |
| Manganese | 0.05 mg/L | no guideline | No guideline |
| Selenium | 0.0003 mg/L | 0.01 mg/L | Below limit |
| Uranium | 0.0004 mg/L | 0.02 mg/L | Below limit |
| Zinc | 5 mg/L | no guideline | No guideline |
| Total Alkalinity | 500 mg/L | no guideline | No guideline |
| Chloride | 250 mg/L | no guideline | No guideline |
| Fluoride | 1.5 mg/L | 1.5 mg/L | Below limit |
| Total Hardness | 800 mg/L | no guideline | No guideline |
| Nitrate | 45 mg/L | 45 mg/L | Below limit |
| Sodium | 300 mg/L | no guideline | No guideline |
| Sulphate | 500 mg/L | no guideline | No guideline |
| Total Dissolved Solids | 1500 mg/L | no guideline | No guideline |
Levels are typical (median) municipal test results. The legal limit is Health Canada's Maximum Acceptable Concentration (MAC).
Not sure what these levels mean for your health? Read our complete contaminants guide — what's detected vs. what matters, and how to read the numbers.
What actually matters in One Arrow First Nation's water
Most of the numbers in the table are below the legal limit and aren't worth your worry. Here's the honest read on the ones people actually ask about in One Arrow First Nation:
Why the limit exists: There is no safe level of lead. It is a developmental neurotoxin — even low exposure is linked to delays in children's physical and mental development and attention deficits, and to kidney problems and high blood pressure in adults.
Who it matters most for: Children (especially under 6) and pregnant women.
Source: EPA AL / HC MAC
Why the limit exists: Short-term exposure above the action level can cause gastrointestinal distress; long-term can affect the liver or kidneys. The action level is set as a corrosion-control signal (copper usually comes from plumbing, not the source water).
Who it matters most for: People with Wilson's disease.
Source: EPA AL / HC AO
Why the limit exists: Arsenic is a Group 1 human carcinogen (IARC). The limit is based on increased risk of bladder, lung, and skin cancer, plus skin damage and circulatory problems at elevated long-term exposure.
Source: EPA MCL / HC MAC
Why the limit exists: The limit protects infants from "blue baby syndrome" (methemoglobinemia). Infants under six months convert nitrate to nitrite and lack the enzyme to reverse it, so their blood can't carry oxygen. Cases occur above 10 mg/L, not at or below.
Who it matters most for: Infants under 6 months (especially formula-fed).
Source: EPA MCL / HC MAC
Why the limit exists: Chromium-6 (the hexavalent form) is a known carcinogen when inhaled and is associated with stomach and intestinal tumors in drinking-water studies; the total-chromium MCL covers all forms. The basis is allergic dermatitis plus the cancer concern from the hexavalent form.
Source: EPA MCL
Why the limit exists: Uranium is both a kidney toxin and a weak alpha-emitter (radioactive); the limit is set for kidney toxicity and the associated increased cancer risk from long-term exposure.
Source: EPA MCL / HC MAC
Why the limit exists: Barium at elevated levels can increase blood pressure and affect the cardiovascular system; the limit is set for those effects from long-term exposure.
Source: EPA MCL / HC MAC
Why the limit exists: Fluoride is added to protect teeth, but above the limit it can cause bone disease (pain and tenderness) and mottled teeth in children. This is a "protecting from excess" limit, not a "removing a poison" limit.
Who it matters most for: Children (tooth mottling at high exposure).
Source: EPA MCL / HC MAC
Why the limit exists: Aluminum has no federal health MCL; a secondary standard addresses water clarity/colour. Aluminum from water treatment is a minor health question; it is not regulated as a primary contaminant.
This is an aesthetic measure — not a health hazard.
Source: EPA (SMCL 0.05–0.2 mg/L)
Why the limit exists: Antimony is linked to increases in blood cholesterol and decreases in blood sugar; the limit is set for those effects.
Source: EPA MCL / HC MAC
Why the limit exists: Boron at elevated levels is associated with reproductive and developmental effects in animal studies; the advisory is precautionary. It is rarely near concern in treated municipal water.
Source: EPA HRL / HC
Why the limit exists: Cadmium is linked to kidney damage and is a probable carcinogen; the limit is set for kidney toxicity from long-term exposure.
Source: EPA MCL / HC MAC
Why the limit exists: Iron above the objective is an AESTHETIC concern, not a health risk — it causes reddish-brown staining, a metallic taste, and can clog fixtures and promote iron bacteria. It does not pose a health hazard like lead or arsenic.
This is an aesthetic measure — not a health hazard.
Source: HC AO / EPA SMCL
Why the limit exists: Manganese is mostly an aesthetic concern (black staining, bitter taste) at typical levels. Note: the very young and elderly may be more sensitive to manganese at high exposure, so Health Canada also sets a health-based limit above the aesthetic objective.
This is an aesthetic measure — not a health hazard.
Source: HC AO / EPA SMCL
Why the limit exists: Selenium at elevated levels can cause hair and fingernail loss, numbness in fingers or toes, and circulatory problems.
Source: EPA MCL / HC MAC
Why the limit exists: Zinc above the objective causes a metallic taste; it is a palatability limit. Zinc is an essential nutrient and has no health-based MCL.
This is an aesthetic measure — not a health hazard.
Source: EPA SMCL / HC AO
Why the limit exists: Alkalinity is a measure of the water's buffering capacity (mostly carbonate/bicarbonate) and has no health limit — it is an operational/corrosion-control parameter.
This is an aesthetic measure — not a health hazard.
Source: None (operational)
Why the limit exists: Chloride above the objective causes a salty taste; it is a palatability limit with no health basis at typical levels.
This is an aesthetic measure — not a health hazard.
Source: HC AO / EPA SMCL
Why the limit exists: Hardness has NO health limit — it is calcium and magnesium, which are actually dietary minerals. It matters only for scale buildup, soap performance, and appliance life. There is no health risk to drinking hard water.
This is an aesthetic measure — not a health hazard.
Source: None (operational)
Why the limit exists: Sodium above the objective affects TASTE (salty) — it is not a health hazard for most people. The limit exists for palatability and as a signal for people on very low-sodium diets.
This is an aesthetic measure — not a health hazard.
Source: HC AO / EPA SMCL
Why the limit exists: Sulphate above the objective can cause a bitter/medicinal taste and a laxative effect in some people; it is an aesthetic/palatability limit, not a health limit.
This is an aesthetic measure — not a health hazard.
Source: HC AO / EPA SMCL
Why the limit exists: TDS is a catch-all for dissolved minerals. Above the objective it can affect taste and cause scaling, but it is an aesthetic measure — high TDS itself is not a health hazard (it often just reflects hard water).
This is an aesthetic measure — not a health hazard.
Source: HC AO / EPA SMCL
Where One Arrow First Nation's water comes from — and how it's treated
South Saskatchewan River, SaskWater Wakaw-Humboldt Regional PWSS
Like every Canadian municipal supply, One Arrow First Nation's water is disinfected (typically chlorine or chloramine) and monitored against Health Canada's Guidelines for Canadian Drinking Water Quality, enforced provincially. If you want to read the raw report for yourself, our how to read your water quality report guide walks you through it line by line.
"My One Arrow First Nation water tastes or smells like chlorine — is it still safe?"
Yes. A chlorine taste or smell doesn't mean the water is unsafe — it's the residual disinfectant doing its job (preventing bacteria from re-growing between the treatment plant and your tap). Occasional earthy or musty tastes in late summer are usually from naturally occurring algae in the source water, not a safety problem. If the taste bothers you, a simple activated-carbon pitcher filter removes it without any safety concern — the water was already safe before you filtered it.
Water quality vs. water hardness — don't confuse the two
"Water quality" (is it safe to drink) and "water hardness" (how much scale it leaves) are entirely different things — and confusing them leads to bad purchases. One Arrow First Nation's water is very hard (11.23 GPG), which has no bearing on its safety — hardness is a cosmetic and appliance concern, not a health one. For what that hardness costs you in scale, appliance wear, and water-heater efficiency, see the One Arrow First Nation water hardness page.
If contaminants concern you — add a drinking-water filter
Should you filter One Arrow First Nation's water?
The softener handles hardness; a drinking-water filter removes Arsenic and removes Lead — if One Arrow First Nation's reported levels concern you. EPA: Arsenic is a known human carcinogen (skin, lung, bladder cancer) and, at exposure, is also linked to cardiovascular disease and developmental effects. EPA MCL: 10 ppb. EPA / CDC: There is no safe level of lead, and it is especially harmful to children (developmental and neurological damage). EPA action level: 15 ppb at the tap. For a full breakdown of what each filter type removes, see best whole-house water filters.
We may earn a commission when you buy through links on our site. This doesn't affect our recommendations. Full disclosure.
When to call a professional
One Arrow First Nation's water meets every legal limit, so there's nothing that requires a pro — but clean, good-tasting water is always worth a little peace of mind, and your home's plumbing is its own variable. The clearest reason to call a licensed plumber: if your home was built before the mid-1950s and may still have lead service lines or solder — the lead risk lives in your pipes, not the city's water. Beyond that, a professional can test your tap (not just the city-wide report) and tell you honestly whether any treatment would actually improve what your household drinks.
Certified, independent results come from a state/province-licensed lab, not a company with a sales incentive — ask for a lab that reports to Health Canada or your province.
Frequently asked questions
Is One Arrow First Nation tap water safe to drink?
Yes. One Arrow First Nation's municipal water meets all Health Canada legal limits — every detected contaminant is below the limit. Lead is the main thing to watch, and it usually comes from a home's own plumbing, not the treated supply.
Who tests One Arrow First Nation's water, and how often?
SaskWater Wakaw-Humboldt Regional Water Supply System samples and reports under provincial drinking-water regulations, tested continuously for microbiological safety and routinely for chemical parameters. Results are summarized in the provincial and municipal reports linked on this page.
Where does One Arrow First Nation drinking water come from?
South Saskatchewan River, SaskWater Wakaw-Humboldt Regional PWSS
Should I filter One Arrow First Nation's tap water?
For most people, no — the water already meets all legal limits. A filter is worth considering only if you're on older plumbing (lead/copper), have a compromised immune system, or dislike the taste/chlorine.
Is One Arrow First Nation water hard?
One Arrow First Nation water is very hard at 11.23 GPG (192 ppm). Hardness is separate from safety — it affects scale and appliances, not health. See the One Arrow First Nation water hardness page for the full picture.
Sources & method
All contaminant levels are drawn from official, published data — SaskWater Wakaw-Humboldt Regional Water Supply System (source). We cite the legal limit for each contaminant so you never see a bare scare number.
- · SaskWater Wakaw-Humboldt Regional Water Supply System — water-quality report we reviewed
- · Health Canada — Guidelines for Canadian Drinking Water Quality
- · Government of Canada — Water quality
- · USGS — Water Hardness
- · Water Quality Association — Scale & Hardness
- · EPA — Drinking Water Regulations
- · Our complete contaminants guide (what's detected vs. what matters, how limits are set)
- · How to read your water quality report — line by line
Compare One Arrow First Nation to Other Saskatchewan Cities
How One Arrow First Nation's water quality stacks up against nearby cities — same Saskatchewan data, same legal limits.
Other Safe-to-Drink Water Cities
One Arrow First Nation is one of many cities whose water meets every health limit. Here are a few more to compare.
Explore More
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💧 Water treatment pros: this page is yours to share
This page helps customers understand what's in their water and whether they need a filter — so they can weigh whether service is worth it. We recommend sharing this page along with our complete contaminants guide in your next quote or follow-up to fully explain the value of your services.