Swimming pool rules in Dover, Massachusetts
Yes, with a Board of Health permit. A pool (or in-ground outdoor hot tub) must be at least 20 feet from any foundation and from any part of the septic system, it must meet zoning setbacks as a structure, and a fence or barrier at least 4 feet high with a self-closing, self-latching gate must surround it completely.
| Permit | Board of Health permit (pools, hot tubs and spas) [1] |
| Plan | Engineer-drawn lot plan at 1 in = 20 ft, in duplicate [2] |
| Min distance from foundation and septic (pools, in-ground hot tubs) | 20 feet [3] |
| Zoning setbacks | Pool counts as a structure under Ch. 185 [4] |
| Barrier height | At least 4 feet, fully surrounding, self-closing/self-latching gate with padlock [5] |
| Inspections | Fee includes at least 4 inspections [7] |
Permit
Under Board of Health Regulation Chapter 224, no residential swimming pool, hot tub or spa can be built, installed or remodeled until the Board of Health issues a permit [1]. The application must include a lot plan in duplicate, drawn by a registered engineer at 1 inch = 20 feet. It must show grades, construction details, the filter, and where the pool sits relative to the house, other buildings and lot lines [2]. Fees are set by the Board of Health and cover at least four inspections; the final inspection is done with the pool company and a Board of Health agent on site and the filter running [7].
Setbacks
A pool, or an outdoor in-ground hot tub or spa, must be at least 20 feet from any foundation and from any part of the sewage (septic) system [3]. The pool also counts as a structure for the setback requirements of the Zoning Bylaw (Chapter 185) [4]. We couldn't review the zoning setbacks themselves because that bylaw is available only on eCode360. Filter backwash must drain to a dedicated sump/seepage pit at least 4 feet in inside diameter and 4 feet below the inlet pipe, built to Title 5 distances [8].
Fencing
A substantial fence or barrier at least 4 feet high must completely surround the pool or outdoor hot tub. It needs a self-closing, self-latching gate with a padlock, and the Board of Health must approve the fence's location and type before it goes in [5]. A temporary fence must surround the pool area during construction [6].
Above-ground pools and hot tubs
The permit rule covers residential pools, hot tubs and spas and doesn't make an exception for above-ground pools [1]. The 20-foot setback names pools and in-ground outdoor hot tubs; the fence rule covers pools and outdoor hot tubs [3][5]. The state building code may also require a building permit.
Near wetlands
If the pool would be within 100 feet of a wetland or 200 feet of a perennial stream, you also need a Conservation Commission permit under the Dover Wetlands Protection Bylaw.
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Next steps
- Hire a registered engineer to prepare a lot plan (1 in = 20 ft, two copies) showing the pool, filter, sump pit, septic system and lot lines.
- Apply to the Dover Board of Health for a swimming pool permit, and get its approval of the fence or barrier location and type.
- Check zoning setbacks and building-permit requirements with the Building Department (508-785-0032 ext. 225).
- If you are near a wetland or stream, file with the Conservation Commission before any work.
Common questions
- Do I need a permit for a pool in Dover, Massachusetts?
- Yes. A Board of Health permit is required before any residential pool, hot tub or spa is built, installed or remodeled. The state building code may also require a building permit.
- Do I need a fence around a pool in Dover, Massachusetts?
- Yes. A substantial fence or barrier at least 4 feet high must completely surround the pool, with a self-closing, self-latching gate with a padlock. The Board of Health must approve its location and type first.
- How far must a pool be from my house and septic system in Dover, Massachusetts?
- At least 20 feet from any foundation and from any part of the septic system. The pool also counts as a structure under the zoning bylaw, whose setbacks weren't reviewed.
- Do hot tubs need a permit in Dover, Massachusetts?
- Yes. The Board of Health permit covers pools, hot tubs and spas, and outdoor in-ground hot tubs must also be 20 feet from foundations and septic systems.
Massachusetts building code rules for pools
Under the State Building Code (780 CMR, 10th edition), residential pools, spas and hot tubs must meet the 2021 International Swimming Pool and Spa Code (ISPSC) as adopted in Massachusetts.
Permits:
- A building permit is needed for any pool except prefabricated pools under 24 inches deep.
- Plans for in-ground pools must be prepared by a registered design professional (an engineer or architect).
- Wiring must meet the Massachusetts Electrical Code (527 CMR 12.00), and gas pool heaters must meet the state plumbing and gas code (248 CMR).
Barrier (fence) requirements (ISPSC §305):
- The barrier must be at least 48 inches high, measured on the side away from the pool.
- The gap under the barrier can be no more than 2 inches over grass or gravel, or 4 inches over concrete.
- Pedestrian gates must open outward away from the pool, be self-closing and self-latching, and be able to take a lock.
- If a house wall forms part of the barrier, doors and low windows opening to the pool need an audible alarm (or another listed option).
- In-ground pool construction sites need temporary fencing at least 4 feet high from excavation until the permanent barrier is up.
- Spas and hot tubs with a lockable safety cover meeting ASTM F1346, and pools with a powered safety cover meeting that standard, are exempt from the barrier rules.
Local zoning still controls pool setbacks, and wetlands rules may apply near water.
What the bylaw says
- § 224-2, Board of Health Regulations Chapter 224 - Swimming Pools, p. 1
No public, semipublic or residential swimming pool/hot tub or spa shall be constructed, installed or remodeled until a permit has first been obtained from the Board of Health.
- § 224-3, Board of Health Regulations Chapter 224 - Swimming Pools, p. 1
The applicant must submit, before a permit is issued, a plan in duplicate, drawn to a scale of 1 inch to 20 feet by a registered engineer, of the lot, showing the layout of the installation in detail, indicating elevations, grades, materials used, construction details, location of the pool in relation to the house, other buildings and lot lines and the type of capacity of the filter.
- § 224-4, Board of Health Regulations Chapter 224 - Swimming Pools, p. 1
All swimming pools (or outside in-ground hot tub/spa) hereinafter constructed shall not be less than 20 feet from any foundation and from the closest proximity of any part of any sewage system.
- § 224-5, Board of Health Regulations Chapter 224 - Swimming Pools, p. 2
A swimming pool shall also be considered a structure with regards to setback requirements of Chapter 185, Zoning.
- § 224-6, Board of Health Regulations Chapter 224 - Swimming Pools, p. 2
A substantial fence or barrier of a minimum height of 4 feet, capable of preventing entry by small children or animals, shall completely surround the pool (outdoor hot tub/spa). The fence must be provided with a self-closing, self-latching gate with padlock. The location and type of fence or barrier must be approved before installation.
- § 224-6, Board of Health Regulations Chapter 224 - Swimming Pools, p. 2
During construction a temporary fence must surround the pool area.
- § 224-11, Board of Health Regulations Chapter 224 - Swimming Pools, p. 3
Application fees shall be set from time to time by the Board of Health. The fee will include a minimum of 4 inspections.
- § 224-4, Board of Health Regulations Chapter 224 - Swimming Pools, p. 1
A sump-seepage pit of a minimum size of 4 feet inside diameter and 4 feet below inlet pipe, made of blocks or precast concrete, backfilled with one-and-one-half-inch stone around the outside shall be constructed to collect