Hardness
Hard
130.5 PPM · 7.6 GPG
Local water dashboard
Official source aggregationWater quality in Douglas, GA 31533
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Coffee County.
1 reported benchmark flag
- Primary matched system
- Douglas
- Source water
- Groundwater
- County
- Coffee County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
9.0e-4 mg/L
6% of action level
Utility match
10 systems
Serves 13,684 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
130.5 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
130.5
mg/L as CaCO₃ equivalent
Grains per gallon
7.6
1 GPG ≈ 17.1 PPM
What this means at home
At 130.5 PPM, mineral scale can build up on fixtures and heating elements, reduce soap lather, and leave visible spotting. Hardness is primarily an aesthetic and appliance concern—not itself a tap-water safety rating.
USGS sites used
28
Nearest site
17.4 mi
Observation range
Sep 24, 2019–Mar 25, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: 23J006 (Well).USGS source documentation ↗
Regional context
Is 31533 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Douglas median
131 PPM
About the same2 indexed ZIP readings · Range 130.5–130.5 PPM
Georgia median
40 PPM
91 PPM higher469 indexed ZIP readings · Range 3–207 PPM
EPA benchmark screen
Contaminant snapshot
Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.
1 pass1 fail
Lead (PB90)
9.0e-4 mg/L
Reported Dec 31, 2027
Copper (CU90)
Not available
No numerical 90th-percentile result
Numerical coverage
2 comparable results
Missing values remain blank; absence is not treated as a pass.
Lead (90th percentile)
Measured in mg/L
Local 9.0e-4
EPA limit 0.015
Gross Alpha, Excl. Radon and U
Measured in PCI/L
Local 17
EPA limit 15
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 55
- Health-based
- 3
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Consumer Confidence Rule | GA0690054 | Unaddressed | Oct 1, 2025 |
| Consumer Confidence Rule | GA0690054 | Unaddressed | Jul 1, 2025 |
| Gross Alpha, Excl. Radon and UHealth-basedReported 17 PCI/L · MCL 15 | GA0690066 | Resolved | Jan 1, 2025through Mar 31, 2025 |
| Nitrate-Nitrite | GA0690054 | Resolved | Jan 1, 2025through Dec 31, 2025 |
| Revised Total Coliform Rule | GA0690054 | Resolved | Nov 1, 2024through Nov 30, 2024 |
| LEAD AND COPPER RULE REVISIONS | GA0690018 | Resolved | Oct 17, 2024through Feb 18, 2026 |
| LEAD AND COPPER RULE REVISIONS | GA0690009 | Resolved | Oct 17, 2024through Apr 15, 2025 |
| LEAD AND COPPER RULE REVISIONS | GA0690048 | Resolved | Oct 17, 2024through May 23, 2025 |
| LEAD AND COPPER RULE REVISIONS | GA0690063 | Resolved | Oct 17, 2024through Feb 18, 2026 |
| LEAD AND COPPER RULE REVISIONS | GA0690066 | Resolved | Oct 17, 2024through Feb 17, 2026 |
| LEAD AND COPPER RULE REVISIONS | GA0690054 | Unaddressed | Oct 17, 2024 |
| Revised Total Coliform Rule | GA0690038 | Resolved | Oct 1, 2024through Oct 31, 2024 |
| Lead and Copper Rule | GA0690066 | Resolved | Oct 1, 2024through Aug 11, 2025 |
| Lead and Copper Rule | GA0690054 | Unaddressed | Oct 1, 2024 |
| Consumer Confidence Rule | GA0690011 | Resolved | Jul 1, 2024through Sep 17, 2024 |
| Revised Total Coliform Rule | GA0690009 | Resolved | Jul 1, 2024through Jul 31, 2024 |
| Consumer Confidence Rule | GA0690038 | Resolved | Jul 1, 2024through Aug 5, 2024 |
| Consumer Confidence Rule | GA0690011 | Unaddressed | Oct 1, 2023 |
| Consumer Confidence Rule | GA0690011 | Unaddressed | Jul 1, 2023 |
| Revised Total Coliform Rule | GA0690011 | Resolved | Jun 1, 2023through Jun 30, 2023 |
No reported violation does not prove that every contaminant was tested or absent; SDWIS measured values are incomplete and lag state records.
Solutions matcher
Your personalized water action plan
Matched to Douglas ZIP 31533 using 130.5 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
130.5 PPM is 1× the high-hardness trigger used by this matcher.
Designed to reduce scale on fixtures, water heaters, glassware, and plumbing throughout the home.
Compare whole-house systemsDrinking water protection
Under-Sink Reverse Osmosis System
Gross Alpha, Excl. Radon and U has a measured benchmark flag or active health-based SDWIS record in this profile.
A certified multi-stage RO system targets a broader range of dissolved contaminants at the kitchen tap.
Explore under-sink filtrationAffiliate disclosure: we may earn a commission from qualifying purchases, at no added cost to you. Product matching is educational and does not replace certified water testing.
Nearby indexed reports
Compare ZIPs in Douglas
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for Douglas
Is tap water safe in Douglas?+
EPA ECHO shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.
How hard is the water?+
Nearby USGS observations produce an estimate of 130.5 PPM, or 7.6 grains per gallon, classified as hard. This is not a household tap measurement.
Do I need a water softener?+
At 130.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.